Peanut
Disease
Control
Field Trials,
2006:
Experimental
Fungicide
Trials
Entomology and Plant Pathology Departmental Series No. 10A
Alabama Agricultural Experiment Station Auburn University, Auburn, Alabama
Richard Guthrie, Director April 2007
Printed in cooperation with the Alabama Cooperative Extension System
(Alabama A&M University and Auburn University)

CONTENTS
page
A uth ors ................................................................................................................................................................... 4
Introduction...........................................................................5
Evaluation of V-10116 and V- 10135 for control of peanut diseases in southeast Alabama, WREC...................7
Evaluation of Topguard and Spectra for control of peanut diseases in southeast Alabama, WREC ............... 9
Evaluation of Evito and Eminent for control of peanut diseases in southeast Alabama, WREC................. 11
Evaluation of Provost and Absolute for control of peanut diseases in southeast Alabama, WREC............... 13
Evaluation of new and experimental fungicides for control of foliar and soil-borne diseases of peanut
in southeast Alabama, WREC ....................................................................... ............. 15
Evaluation of new fungicides for control of foliar and soil-borne diseases of peanut
in southeast A labam a, W REC ................................................................................... ............................. 17
Comparison of new fungicides for control of leaf spot and southern stem rot on peanut
in southeast A labam a, W REC ................................................................................... ............................. 
19
Comparison of new fungicides with currently registered fungicides for control of foliar and
soil-borne diseases of peanut in southeast Alabama, WREC............................. ........................ 21
Evaluation of V- 10116 and V- 10135 for control of peanut diseases in southwest Alabama, GCREC.......... 23
Comparison of new and experimental fungicides for peanut disease control
in southw est A labam a, G CREC ................................................................................. ............................ 25
Evaluation of new fungicides for peanut disease control in southwest Alabama, GCREC........................ 27
Evaluation of Provost and Absolute for peanut disease control in southwest Alabama, GCREC.................. 
29
Comparison of 14- and 21-day calendar schedules for peanut disease control in Alabama, GCREC .......... 
31
Evaluation of experimental fungicides for peanut disease control in southwest Alabama, GCREC .................. 33
Yield of experimental peanut lines and their sensitivity to TSWV, leaf spot diseases,
and w hite m old, W R E C ........................................................................... ............................................... 
35
This publication is available on-line at
http://www.ag.auburn.edu/aaes/communications/entplp/entplp10a.pdf
Information contained herein is available to all persons without regard to race, color, sex, or national origin.
Issued in furtherance of Cooperative Extension work in agriculture and home economics, Acts of May 8 and June 30, 1914, and other
related acts, in cooperation with the U.S. Department ofAgriculture. The Alabama Cooperative Extension System (Alabama A&M
University and Auburn University) offers educational programs, materials, and equal opportunity employment to all people without
regard to race, color, national origin, religion, sex, age, veteran status, or disability.
AUTHORS
J. Bostick
Executive Secretary
Alabama Crop Improvement Association
Headland, Alabama 36345
K. L. Bowen
Professor
Dept. of Entomology and Plant Pathology
Auburn University, Alabama 36849-5624
H. L. Campbell
Research Associate
Dept. of Entomology and Plant Pathology
Auburn University, Alabama 36849-5624
B. E. Gamble
Associate Superintendent
Wiregrass Research and Extension Center
Headland, Alabama 36345
A. K. Hagan
Professor
Dept. of Entomology and Plant Pathology
Auburn University, Alabama 36849-5624
S. P. Nightengale
Associate Superentindent
E.V. Smith Research Center, Plant Breeding 
Unit
Tallassee, Alabama 36078
M. D. Pegues
Associate Superintendent
Gulf Coast Research and Extension 
Center
Fairhope, Alabama 36532
J. R. Weeks
Extension Specialist and Associate Professor
Dept. of Entomology and Plant Pathology
Auburn University, Alabama 36849-5624
L. W. Wells
Superintendent
Wiregrass Research and Extension Center
Headland, Alabama 36345
Peanut Disease Control Field Trials, 2006
Experimental Fungicide Trials
A. K. Hagan, K. L. Bowen, and H. L. Campbell
INTRODUCTION
ungicides, cultural practices, and resistant cultivars are available for the control of damaging diseases and
nematode pests that can limit peanut yield. A management program that incorporates these practices can
enhance the control of diseases and nematode pests and can increase crop yield and profit potential.
In order to provide timely information concerning disease management practices, Alabama Agricultural
Experiment Station personnel conducted foliar and soil-borne disease as well as nematode control trials at the
Wiregrass Research and Extension Center (WREC) in Headland, Alabama, and at the Gulf Coast Research and
Extension Center (GCREC) in Fairhope, Alabama. This report summarizes the results of those trials.
During the 2006 production season at the WREC, temperatures were at or above historical averages (Fig-
ure 1), and monthly rainfall totals were below historical averages in May, June, and July and near normal in Au-
gust, September, and October, resulting in late season increase in disease severity (Figure 2). As a result, increases
in leaf spot severity were observed in all trials near the end of the growing season whereas soil-borne disease
incidence was reduced and little impact was observed on yield.
At the GCREC, temperatures were near normal throughout the entire growing season and rainfall was below
historical averages in May, June, and July and near normal in August, September, and October. More consistent
rainfall throughout the growing season led to above normal leaf spot severity and higher incidence of soil-borne
diseases. However, little impact was observed on yield.
ring t e I0 6 Ipea' ndi ..... .......
- l
-eptmbMax, - M------ -in
Fairhape
At 1h G E , e praue i er 
? 
ea "o ?? "
,r1ca avra i=* !ay .ue |n Jul in
?al thoghu the groin se.o ie o
- Max ----- Min
- !i
- arh0e
_0
Figure 1. Daily minimum and
maximum temperature (OF),
May to October 2006.
01 15 30 15 30 15 30 15 30 15 30
May May May Jun Jun Jul Jul Aug Aug Sep Sep
110
100
90
80
70
0
.. 60
E
i- 50
40
30
20
110
100
90
. 80
70
0. 60
50
I-
40
30
20
6 ALABAMA AGRICULTURAL EXPERIMENT STATION-
Figure 2. Daily precipitation
(inches), May to October
2006.
2.5
2
al)
C.)
(I)
1.5
1
0.5
0
3.5
3
2.5
2
1.5
1
0.5
0
Headland
EL
1
01010 13 11
MayJuJl Aug Sep
Fairhope
p ii
May
14 
26 19
Jun Jul Auai
0 %",V
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS 7
EVALUATION OF V-1011O6 AND V-10135 FOR CONTROL OF PEANUT DISEASES IN
SOUTHEAST ALABAMA, WREC
H. L. Campbell, A. K. Hagan, K. L. Bowen, and L. W. Wells
Objective: To evaluate the experimental fungicides V-10116 and V-10116 and compare them with currently reg-
istered fungicides for control of early leaf spot and southern stem rot and for yield response in an irrigated peanut
production system in southeast Alabama.
Methods: Peanut cultivar Carver was planted at the Wiregrass Research and Extension Center in Headland, Ala-
bama, on May 20 in a field with a history of peanut production. The soil type was a Dothan sandy loam (OM<l
percent). Seed were sown at a rate of approximately five seed per foot of row. On March 7, the test area was
paratilled and turned. On May 15, 1 quart per acre of Sonalan + 0.45 pint per acre of Strongarm were applied for
postemergent weed control. On June 21, 1.5 pints per acre of Storm and 1.5 pints per acre of 2,4-DB were applied
for weed control. Thrips were controlled with an in-furrow application of 6.5 pounds per acre ofTemik 15G.
Plots consisted of four 30-foot rows spaced 3 feet apart arranged in a randomized complete block with six
replications. The plots were arranged under a central pivot irrigation system and irrigated on May 30, June 12, June
30, July 10, July 19, August 30, and September 6. Fungicides were applied on a 14- to 21-day schedule on June 26,
July 11, July 26, August 8, August 22, September 5, and September 18, using a four-row, tractor-mounted boom
sprayer with TX8 nozzles calibrated to deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 29 using the Florida leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some 
defoliation (< 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 6 immediately after plot inversion. Plots were harvested on October 12 and yields were re-
ported at 10.12 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P- 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through August. Rainfall increased in September and October, resulting in late onset of leaf
spot diseases.
While early leaf spot was observed early in the growing season on untreated controls, late leaf spot was pri-
marily observed late in the season. Leaf spot control obtained with the Bravo/Headline treatment was better than
all other treatments except for the standard Bravo 720, Bravo/Abound, and Bravo/Moncut programs. The pro-
gram that included V-10135 provided lower leaf spot control than all other programs. The programs that included
Bravo/V-1011l6 (3.0 ounces) and V-1116 (4.0 ounces) gave similar results to that observed with the standard
Bravo/Folicur program. The Bravo/Folicur + NIS program gave significantly better SSR control than the Bravo
720 standard, Bravo/V-loll16 (3.0 ounces), Bravo/Headline, and V-l1ll16/Headline programs. The recommended
Bravo/Abound program yielded significantly more than the Bravo/V-i1o135 or the Bravo/V-loll16 (3.0 ounces)
program.
0 ALABAMAAGRICULTURAL EXPERIMENT STATION-
EVALUATION OF V-10116 AND V-10135 FOR CONTROL OF PEANUT 
DISEASES IN SOUTHEAST ALABAMA, WREC
Treatment and rate/ac Application - Disease 
ratings- Yield
timing
1  
LS
2  
SSR
3  
Ib/ac
Bravo 720 24.0 fl oz 1-7 3.14 
6.5 4074
Bravo 720 24.0 fl oz 1,2,7 4.3 
6.2 3888
V-10116 3.0 oz + NIS 0.125% v/v 3,4,5,6
Bravo 72024.Ofl oz 1,2,7 4.2 4.7 
4195
V-10116 4.0 oz + NIS 0.125% v/v 3,4,5,6
Bravo 720 24.0 fl oz 1,2,7 3.6 5.5 
4316
Headline 2.09EC 9.0 fl oz 2,4
Folicur 3.6F 7.2 fl oz 3,5,6
Bravo 720 24.0 fl oz 1,2,7 3.6 
5.3 4259
Headline 2.09EC 9.0 fl oz 2,4
V-10116 4.Ooz + NIS0.125% v/v 3,5,6
Bravo 720 24.0 fl oz 1,2,4,6,7 2.7 6.5 
4114
Headline 2.09 EC 9.0 fl oz 3,5
V-10116 2.5 oz + NIS 0.125% v/v 1,2,4,6,7 3.3 
4.5 4267
Headline 2.09 EC 9.0 fl oz 3,5
V-10116 2.5 oz + NIS 0.125% v/v 1,2,4,6,7 3.4 6.0 
4187
Headline 2.09 EC 9.0 fi oz 3,5
V-10116 34DC 20.3 fl oz 1,2,4,6,7 
3.3 4.8 4235
Headline 2.09 EC 9.0 fl oz 3,5
Bravo 72024.0floz 1,2,7 4.8 7.2 
3654
V-10135 16.0 oz 3,4,5,6
Bravo 720 24.0 fl oz 1,2,7 4.2 5.3 
4332
Folicur 3.6F 7.2 fl oz 3,4,5,6
Bravo 720 24.0 fl oz 1,2,7 4.0 
3.3 4187
Folicur 3.6F 7.2 fl oz + NIS 0.125% v/v 3,4,5,6
Bravo 720 24.0 fl oz 1,2,4,6,7 3.0 
4.3 4542
Abound 2.08SC 18.5 fl oz 3,5
Bravo 720 24.Ofl oz 1,2,4,6,7 2.9 
3.5 4187
Bravo 720 24.0 fl oz + Moncut 70DF 1.1 lb 3,5
LSD (P = 0.05) 0.5 2.5 578
1Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no disease"... 10 = completely dead plants).
SSouthern stem rot incidence was expressed as the number of diseased plants per 60 feet of row.
" Mean separation within columns was according to Fisher's protected least significant difference (LSD) test (P = 0.05).
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS 9
EVALUATION OF TOPGUARD AND SPECTRA FOR CONTROL OF PEANUT DISEASES IN
SOUTHEAST ALABAMA, 
WREC
H. L. Campbell, A. K. Hagan, K. L. Bowen, and L. W. Wells
Objective: To evaluate the new fungicides Topguard and Spectra and compare them with currently registered fun-
gicides for control of early leaf spot and southern stem rot and for yield response in an irrigated peanut production
system in southeast Alabama.
Methods: Peanut cultivar Carver was planted at the Wiregrass Research and Extension Center in Headland, Ala-
bama, on May 20 in a field with a history of peanut production. The soil type was a Dothan sandy loam (OM<1
percent). Seed were sown at a rate of approximately five seed per foot of row. On March 7, the test area was
paratilled and turned. On May 15, 1 quart per acre of Sonalan + 0.45 pint per acre of Strongarm were applied for
postemergent weed control. On June 21, 1.5 pints per acre of Storm and 1.5 pints per acre of 2,4-DB were applied
for weed control. Thrips were controlled with an in-furrow application of 6.5 pounds per acre of Temik 15G.
Plots consisted of four 30-foot rows spaced 3 feet apart arranged in a randomized complete block with six
replications. The plots were arranged under a central pivot irrigation system and irrigated on May 30, June 12, June
30, July 10, July 19, August 30, and September 6. Fungicides were applied on a 14- to 21-day schedule on June
27, July 5, July 11, August 9, August 23, September 5, and September 18, using a four-row, tractor-mounted boom
sprayer with TX8 nozzles calibrated to deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 28 using the Florida leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4 = some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation (5 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 6 immediately after plot inversion. Plots were harvested on October 12 and yields were
reported at 10.2 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through August. Rainfall increased in September and October, resulting in late onset of leaf
spot diseases.
While early leaf spot was observed early in the growing season on untreated control plots, late leaf spot
was primarily observed late in the season. The level of leaf spot control obtained with the Bravo/Abound treat-
ment was significantly better than that provided by all other treatment programs except the standard Bravo 720
or Bravo/Moncut programs and the Tilt-Bravo (36 fluid ounces)/Abound/Tilt-Bravo/Bravo program. Poorest leaf
spot control was observed with the standard Bravo/Folicur program. Incidence of SSR was lower than was seen
in previous years. Disease ratings for nearly all fungicide programs were similar. However, Tilt/Bravo (36 fluid
ounces)/Abound/Tilt/Bravo (24 fluid ounces)/Bravo regime gave better SSR control than the Bravo 720 standard
and Bravo/Topguard (14 fluid ounces) programs. Yields for all fungicide treatments did not significantly differ.
EVALUATION OF TOPGUARD AND SPECTRA FOR CONTROL OF PEANUT DISEASES IN SOUTHEAST ALABAMA, WREC
Treatment and rate/ac Application -Disease ratings- Yield
timing' LS
2  
SSR
3  
lb/ac
Bravo 720 24.0 fl oz 1-7 2.84 5.5 3937
Bravo 720 24.0 fl oz 1,2,6,7 3.7 4.7 3888
Topguard 7.0 fl oz 3,4,5
Bravo 720 24.0 fl oz 1,2,6,7 3.4 3.5 3937
Topguard 10.0 fl oz 3,4,5
Bravo 720 24.0 fl oz 1,2,6,7 3.2 5.0 3993
Topguard 14.0 fl oz 3,4,5
Bravo 720 24.0 fl oz 1,2,6,7 3.2 4.0 4230
Topguard 28.0 fl oz 3,4,5
Bravo 720 24.0 fl oz 1,2,4,6,7 3.6 3.8 4316
Spectra 7.2 fl oz 3,5
Bravo 720 24.0 fl oz 1,2,7 3.8 3.2 4445
Folicur 3.6F 7.2 fl oz 3,4,5,6
Bravo 720 24.0 fl oz 1,2,4,6,7 2.5 4.3 4227
Abound 2.08SC 18.5 fl oz 3,5
Bravo 720 24.0 fl oz 1,2,4,6,7 2.9 3.3 4133
Echo 720 24.0 fl oz + Moncut 70DF 1.1 Ib 3,5
Echo 720 24.0 fl oz 1,2,7 3.2 3.2 4317
Echo 720 24.0 fl oz + Moncut 70DF 0.54 Ib 3,4,5,6
Bravo 720 24.0 fl oz 1,7 3.4 3.8 4463
Folicur 3.6F 7.2 fl oz 2,4,6
Bravo 720 24.0 fl-oz + Moncut 70DF 1.1 lb 3,5
Tilt/Bravo 36.0 fl oz 1.5 2.8 2.7 4356
Abound 2.08SC 18..2 fl oz 3,5
Tilt/Bravo 24.0 fl oz 4
Bravo 720 24.0 fl oz 6,7
Headline 2.09 EC 9.0 fl oz 1.5 3.7 3.7 4211
Folicur 3.6F 7.2 fl oz 3,5
Headline 2.09EC 12.0 fl oz 4
Bravo 720 24.0 fl oz 6,7
Tilt/Bravo 32.0 fl oz 1.5 3.1 3.2 4195
Abound 2.08SC 18.2 fl oz 3,5
Tilt/Bravo 24.0 fl oz 4
Bravo 720 24.0 fl oz 6,7
Tilt/Bravo 24.0 fl oz 1,2,4 3.0 3.5 4346
Abound 2.08SC 18.2 fl oz 3,5
Bravo 720 24.0 fl oz 6,7
LSD (P = 0.05) 0.4 2.2 
626
' Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no 
disease;... 10 = completely dead plants).
3 Southern stem rot incidence was expressed as the number of diseased plants per 60 feet of 
row.
4 Mean separation within columns was according to Fisher's protected least significant difference (LSD) 
test (P = 0.05).
10
ALABAMA AGRICULTURAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
EVALUATION OF EVITO AND EMINENT FOR CONTROL OF PEANUT DISEASES
IN SOUTHEAST ALABAMA, WREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and L W. Wells
Objective: To evaluate the new fungicides Evito and Eminent and compare them with currently registered fungi-
cides for control of early leaf spot and southern stem rot and for yield response in an irrigated peanut production
system in southeast Alabama.
Methods: Peanut cultivar Carver was planted at the Wiregrass Research and Extension Center in Headland, Ala-
bama, on May 20 in a field with a history of peanut production. The soil type was a Dothan sandy loam (OM<l
percent). Seed were sown at a rate of approximately five seed per foot of row. On March 7, the test area was
paratilled and turned. On May 15, 1 quart per acre of Sonalan + 0.45 pint per acre of Strongarm were applied for
postemergent weed control. On June 21, 1.5 pints per acre of Storm and 1.5 pints per acre of 2,4-DB were applied
for weed control. Thrips were controlled with an in-furrow application of 6.5 pounds per acre ofTemik 15G.
Plots consisted of four 30-foot rows spaced 3 feet apart arranged in a randomized complete block with six
replications. The plots were arranged under a central pivot irrigation system and irrigated on May 30, June 12, June
30, July 10, July 19, August 30, and September 6. Fungicides were applied on a 14- to 21-day schedule on June
26, July 5, July 11, August 8, August 22, September 5, and September 18, using a four-row, tractor-mounted boom
sprayer with TX8 nozzles calibrated to deliver 15 gallons per acre. Lorsban 15G was applied banded over the row
with a four-row commercial granular applicator.
Early and late leaf spot were visually rated on September 28 using the Florida leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation (< 25 percent); 6=
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation ( 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 6 immediately after plot inversion. Plots were harvested on October 12 and yields were
reported at 9.8 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through August. Rainfall increased in September and October, resulting in late onset of leaf
spot diseases.
While early leaf spot was observed early in the growing season on untreated control plots, late leaf spot was
primarily observed late in the season. All programs that included four applications of Folicur gave significantly
poorer leaf spot control than all other treatments except the Echo/Evito/Folicur program. All other fungicide pro-
grams gave leaf spot control similar to that provided by the standard season-long Echo 720 program. Incidence of
SSR was lower than had been seen in previous years. With the exception of Echo/Evito/Folicur and Headline/Fo-
licur/Headline/Echo, the best SSR control was obtained with the Echo/Evito + Folicur program. Yields for Echo!
Abound Echo/Folicur/Lorsban were significantly above that recorded for the Echo 720 standard. Otherwise, yield
responses for the remaining fungicide programs and the Echo 720 standard were similar.
11
EVALUATION OF EVITO AND EMINENT FOR CONTROL OF PEANUT DISEASES IN SOUTHEAST ALABAMA, WREC
Treatment and rate/ac Application -Disease ratings- Yield
timinq
1  
LS
2  
SSR
3  
lb/ac
Echo 720 24.0 fl oz 1-7 3.44 3.8 3687
Echo 720 24.0 fl oz 1,2,4,6,7 3.3 3.8 4041
Evito 5.7 fl oz 3,5
Echo 720 24.0 fl oz 1,2,4,6,7 3.1 3.0 4001
Evito 5.7 fl oz + NIS 0.25% v/v 3,5
Echo 720 24.0 fl oz 1,2,4,6,7 3.2 3.2 3985
Evito 3.5 fl oz + Folicur 3.6F 3.6 fl oz 3,5
Echo 720 24.0 fl oz 1,2,7 4.0 4.8 4025
Evito 5.7 fl oz 3,5
Folicur 3.6F 7.2 fl oz 4,6
Echo 720 24.0 fl oz 1,2,7 3.3 2.7 4074
Evito 3.5 fl oz + Folicur 3.6F 3.6 fl oz 3,4,5,6
Echo 720 24.0 fl oz 1,2,7 4.5 3.5 3816
Folicur 3.6F 7.2 fl oz 3,4,5,6
Echo 720 24.0 fl oz 1,2,4,6,7 3.0 2.8 4380
Abound 2.08SC 18.5 fl oz 3,5
Echo 720 24.0 fl oz 1,2,4,6,7 3.1 3.8 3945
Echo 720 24.0 fl oz + Moncut 70DF 1.1 Ib 3,5
Headline 2.09EC 6.0 fl oz 1,2 3.3 4.3 3961
Folicur 3.6F 7.2 fl oz 3,5
Headline 2.09EC 9.0 fl oz 4
Echo 720 24.0 fl oz 6,7
Echo 720 24.0 fl oz 1,2,7 4.5 2.8 4299
Folicur 3.6F 7.2 fl oz 3,4,5,6
Lorsban 15G 13.3 Ib Pegging
Echo 720 24.0 fl oz 1,2,7 4.5 3.3 3945
Folicur 3.6F 3.6 fl oz 3,4,5,6
Lorsban 15G 13.3 Ib Pegging
Headline 2.09EC 9.0 fl oz 1.5 3.9 3.3 3993
Folicur 3.6F 7.2 fl oz 3,5
Headline 2.09EC 12.0 fl oz 4
Echo 720 24.0 fl oz 6,7
Echo 720 24.0 fl oz 1,2,7 3.2 4.0 
3977
Eminent 125SL 13.0 fl oz 3,4,5,6
LSD (P = 0.05) 0.5 
1.6 509
1 Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no disease;... 10 
= completely dead plants).
3 Southern stem rot incidence was expressed as the number of diseased plants per 60 feet of row.
4 Mean separation within columns was according to Fisher's protected least significant difference 
(LSD) test (P = 0.05).
12
ALABAMA AGRICULTURAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
EVALUATION OF PROVOST AND ABSOLUTE FOR CONTROL OF PEANUT DISEASES
IN SOUTHEAST ALABAMA, WREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and L. W. Wells
Objective: To evaluate the new fungicides Provost and Absolute and compare them with currently registered fun-
gicides for control of early leaf spot and southern stem rot and for yield response in an irrigated peanut production
system in southeast Alabama.
Methods: Peanut cultivar Carver was planted at the Wiregrass Research and Extension Center in Headland, Ala-
bama, on May 25 in a field with a history of peanut production. The soil type was a Dothan sandy loam (OM<1
percent). Seed were sown at a rate of approximately five seed per foot of row. On March 7, the test area was
paratilled and turned. On May 15, 1 quart per acre of Sonalan + 0.45 pint per acre of Strongarm were applied for
postemergent weed control. On June 21, 1.5 pints per acre of Storm and 1.5 pints per acre of 2,4-DB were applied
for weed control. Thrips were controlled with an in-furrow application of 6.5 pounds per acre of Temik 15G.
Plots consisted of four 30-foot rows spaced 3 feet apart arranged in a randomized complete block with six
replications. The plots were arranged under a central pivot irrigation system and irrigated on June 1, June 21, July
6, July 17, August 22, and September 5. Fungicides were applied on a 14- to 21-day schedule on June 28, July 5,
July 10, August 11, August 25, September 13, and September 26, using a four-row, tractor-mounted boom sprayer
with TX8 nozzles calibrated to deliver 15 gallons per acre.
Early and late leaf spot were visually rated on October 4 using the Florida leaf spot scoring system [1 = no
disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4 = some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation (5 25 percent); 6 =
lesions numerous with significant defoliation (5 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 13 immediately after plot inversion. Plots were harvested on October 24 and yields were
reported at 9.8 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through August. Rainfall increased in September and October resulting in late onset of leaf
spot diseases.
While early leaf spot was observed early in the growing season on untreated control plots, late leaf spot was
primarily observed late in the season. Echo/Folcur and Headline/Folicur/Headline/Echo programs were signifi-
cantly less effective in controlling leaf spot diseases than all other treatments. The remaining fungicide treatments
gave similar leaf spot control. Incidence of southern stem rot was lower than had been seen in previous years.
However, the best SSR control was observed with the Abound/Echo/Abound Proline/Echo/Provost compared with
Echo season-long, Echo/Folicur, Echo/Moncut, and Headline/Folicur/Headline/Echo treatments. Yield response
with Echo/Provost (5 fluid ounces) was significantly higher compared with the Echo/Provost (4 fluid ounces),
Echo/Provost (10.7 fluid ounces), and Abound/Echo/Abound treatment regimes.
13
EVALUATION OF PROVOST AND ABSOLUTE FOR CONTROL OF PEANUT DISEASES IN SOUTHEAST ALABAMA, WREC
Treatment and rate/ac Application - Disease ratings- Yield
timing
1  
LS
2  
SSR
3  
Ib/ac
Echo 720 24.0 fl oz 1-7 3.24 4.3 3138
Echo 720 24.0 fl oz 1,2,7 2.8 3.8 3253
Provost 433SC 8.0 fl oz 3,4,5,6
Proline 5.7 fl oz In-furrow 2.8 2.0 3461
Echo 720 24.0 fl oz 1,2,7
Provost 433SC 8.0 fl oz 3,4,5,6
Echo 720 24.0 fl oz 1,2,7 2.9 2.8 3630
Provost 433SC 5.0 fl oz 3,4,5,6
Echo 720 24.0 fl oz 1,2,7 3.0 3.2 3078
Provost 433SC 4.0 ft oz 3,4,5,6
Absolute 500SC 3.5 fl oz + Induce 0.06% v/v 1,3,5 2.9 3.8 3233
Echo 720 24.0 fl oz 2,4,6,7
Absolute 500SC 7.0 fl oz + Induce 0.06% v/v 1,3,5 3.0 3.5 3299
Echo 720 24.0 fl oz 2,4,6,7
Echo 720 24.0 fl oz 1,2,7 3.0 2.8 3098
Provost 433SC 10.7 fl oz 3,4,5,6
Echo 720 24.0 ft oz 1,2,7 3.8 4.8 3227
Folicur 3.6F 7.2 fl oz 3,4,5,6
Abound 2.08SC 6.0 fl oz In-furrow 2.9 1.8 3033
Echo 720 24.0 fl oz 1,2,4,6,7
Abound 2.08SC 18.5 fl oz 3,5
Echo 720 24.0 fl oz 1,2,4,6,7 2.9 2.6 3185
Abound 2.08SC 18.5 fl oz 3,5
Echo 720 24.0 fl oz 1,2,4,6,7 3.1 4.7 3514
Echo 720 24.0 fl oz + Moncut 70DF 1.1 lb 3,5
Headline 2.09EC 9.0 fl oz 1.5 3.7 4.7 3291
Folicur 3.6F 7.2 fl oz 3,5
Headline 2.09EC 12.0 fl oz 4
Echo 720 24.0 fl oz 6,7
LSD (P = 0.05) 0.5 1.8 497
1 Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no disease;... 10 = completely dead plants).
3 Southern stem rot incidence was expressed as the number of diseased plants per 60 feet of row.
4 Mean separation within columns was according to Fisher's protected least significant difference (LSD) test (P = 0.05).
14
ALABAMA AGRICU LTU RAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
EVALUATION OF NEW AND EXPERIMENTAL FUNGICIDES FOR CONTROL OF FOLIAR
AND SOIL-BORNE DISEASES OF PEANUT IN SOUTHEAST ALABAMA, WREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and L. W. Wells
Objective: To evaluate new fungicides, Punch and Endura, and experimental fungicides, DPX LEM17 200SC
and DPX LEM17 50WDG, and compare them with currently registered fungicides for control of early leaf spot
and southern stem rot and for yield response in an irrigated peanut production system in southeast Alabama.
Methods: Peanut cultivar Carver was planted at the Wiregrass Research and Extension Center in Headland, Ala-
bama, on May 20 in a field with a history of peanut production. The soil type was a Dothan sandy loam (OM<1
percent). Seed were sown at a rate of approximately five seed per foot of row. On March 7, the test area was
paratilled and turned. On May 15, 1 quart per acre of Sonalan + 0.45 pint per acre of Strongarm were applied for
postemergent weed control. On June 21, 1.5 pints per acre of Storm and 1.5 pints per acre of 2,4-DB were applied
for weed control. Thrips were controlled with an in-furrow application of 6.5 pounds per acre of Temik 15G.
Plots consisted of four 30-foot rows spaced 3 feet apart arranged in a randomized complete block with six
replications. The plots were arranged under a central pivot irrigation system and irrigated on May 30, June 12, June
30, July 10, July 19, August 30, and September 6. Fungicides were applied on a 14- to 21-day schedule on June 27,
July 5, July 12, July 27, August 10, August 23, September 6, and September 20, using a four-row, tractor-mounted
boom sprayer with TX8 nozzles calibrated to deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 28 using the Florida leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation (5 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 6 immediately after plot inversion. Plots were harvested on October 12 and yields were
reported at 10.0 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through August. Rainfall increased in September and October, resulting in late onset of leaf
spot diseases.
While early leaf spot was observed early in the growing season on untreated control plots, late leaf spot was
primarily observed late in the season. Leaf spot control was significantly lower with DPX LEM17 50WDG than for
all other treatment regimes. The Equus 720 full-season standard, DPX LEM17 200SC (23.9 fluid ounces), Punch +
Equus/LEM17 200SC/Equus, and Bumper + Equus/Abound/Equus gave similar levels of leaf spot control. Treat-
ments less effective in controlling leaf spot diseases than the Equus standard were Equus/Folicur, Equus/Equus +
Moncut, Bumper + Equus/Folicur/Equus, and Endura. Incidence of southern stem rot (SSR) was lower than had
been seen in previous years. Incidence was significantly higher for the Equus 720 standard compared with DPX
LEM17 50WDG, DPX LEM17 200SC (16.8 fluid ounces), DPX LEM17 200SC (23.9 fluid ounces), and Endura.
Yields for DPX LEM17 200SC + Punch and Bumper + Equus/Folicur/Equus treatments were significantly higher
than those obtained with the Equus season-long standard and the DPX LEM17 200SC (23.9 fluid ounces) regime.
Yield response with the majority of the other fungicide regimes was statistically similar.
15
EVALUATION OF NEW AND EXPERIMENTAL FUNGICIDES FOR CONTROL OF FOLIAR
AND SOIL-BORNE DISEASES OF PEANUT IN SOUTHEAST ALABAMA, WREC
Treatment and rate/ac Application -Disease ratings- Yield
timinq
1  
LS
2  
SSR
3  
lb/ac
Equus 720 24.0 fl oz 1-7 2.64 5.5 3912
DPX LEM17 200SC 9.56 fl oz 1-7 3.2 3.8 4259
DPX LEM17 50WDG 4.0 oz 1-7 5.0 3.5 4085
DPX LEM17 200SC 16.8 fl oz 1-7 3.1 2.5 4122
DPX LEM17 200SC 23.9 fl oz 1-7 2.9 2.0 3824
Punch 5.0 fl oz + Equus 720 24.0 fl oz 1,2 2.8 4.0 4114
DPX LEM17 200SC 16.8 fl oz 3,5
Equus 720 24.0 fl oz 4,6,7
Bumper 2.0 fl oz + Equus 720 16.0 fl oz 1,2 2.8 4.3 4380
Abound 2.08SC 18.2 fl oz 3,5
Equus 720 24.0 fl oz 4,6,7
Bumper 2.0 fl oz + Equus 720 16.0 fl oz 1,2 3.8 3.8 4606
Folicur 3.6F 7.2 fl oz 3.5
Equus 720 24.0 fl oz 4,6,7
DPX LEM17 200SC 9.56 fl oz + Punch 5.0 fl oz 1-7 3.0 4.0 4630
Endura 8.0 oz 1-7 3.7 3.5 4477
Equus 720 24.0 fl oz 1,2,7 4.3 5.2 4348
Folicur 3.6F 7.2 fl oz 3,4,5,6
Equus 720 24.0 fl oz 1,2,4,6,7 3.1 4.7 4485
Abound 2.08SC 18.5 fl oz 3,5
Equus 720 24.0 fl oz 1,2,4,6,7 4.1 4.7 4085
Equus 720 24.0 fl oz + Moncut 70DF 1.1 Ib 3,5
Headline 2.09EC 9.0 fl oz 1.5 3.6 4.2 4259
Folicur 3.6F 7.2 fl oz 3.5
Headline 2.09EC 12.0 fl oz 4
Equus 720 24.0 fl oz 6,7
LSD (P = 0.05) 0.4 1.9 630
'Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system 
(1 = no disease;... 10 = completely dead plants).
3 Southern stem rot incidence was expressed as the number of diseased plants per 60 feet of row.
4 Mean separation within columns was according to Fisher's protected least significant difference (LSD) test (P = 0.05).
16
ALABAMA AGRICULTURAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
EVALUATION OF NEW FUNGICIDES FOR CONTROL OF FOLIAR AND
SOIL-BORNE DISEASES OF PEANUT IN SOUTHEAST ALABAMA, WREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and L. W. Wells
Objective: To evaluate new and experimental fungicides and compare them with currently registered fungicides
for control of early leaf spot and southern stem rot and for yield response in an irrigated peanut production 
system
in southeast Alabama.
Methods: Peanut cultivar Carver was planted at the Wiregrass Research and Extension 
Center in Headland, Ala-
bama, on May 20 in a field with a history of peanut production. The soil type was a Dothan sandy loam (OM<1
percent). Seed were sown at a rate of approximately five seed per foot of row. On March 7, the test area 
was
paratilled and turned. On May 15, 1 quart per acre of Sonalan + 0.45 pint per acre of Strongarm were 
applied for
postemergent weed control. On June 21, 1.5 pints per acre of Storm and 1.5 pints per acre of 2,4-DB were applied
for weed control. Thrips were controlled with an in-furrow application of 6.5 pounds per acre 
of Temik 15G.
Plots consisted of four 30-foot rows spaced 3 feet apart arranged in a randomized 
complete block with six
replications. The plots were arranged under a central pivot irrigation system and irrigated 
on May 30, June 12, June
30, July 10, July 19, August 30, and September 6. Fungicides were applied on a 14- to 21-day schedule on June 
29,
July 5, July 12, July 27, August 9, August 23, September 6, and September 20, using a four-row, 
tractor-mounted
boom sprayer with TX8 nozzles calibrated to deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 28 using the Florida 
leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 
4 = some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some 
defoliation (5 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous 
with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 
9 = very few
remaining leaves covered with lesions (5 95 percent); 10 = completely 
defoliated or dead plants).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive 
SSR-damaged plants)
were made on October 6 immediately after plot inversion. Plots were harvested on October 12 and yields were
reported at 10.0 percent moisture. Significance of treatment effects were tested by analysis of variance 
and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through August. Rainfall increased in September and October, resulting in late 
onset of leaf
spot diseases.
While early leaf spot was observed early in the growing season on untreated control plots, 
late leaf spot was
primarily observed late in the season. The best leaf spot control was with the Echo 720 full season and 
the Echo/
Echo + Eminent treatment regimes. Echo/Folicur, Echo/Muscle, Echo/Tebuzol, Echo/Echo + Moncut, 
and both
Echo/Artisan/Echo treatment regimes gave poorer control of leaf spot diseases than the season-long Echo 
stan-
dard. Leaf spot ratings for the remaining fungicide treatments were similar to those reported for the 
Echo standard.
Incidence of southern stem rot (SSR), which was lower than was noted in previous years, was similar for all fun-
gicide treatments. Yields were significantly higher for Headline/Artisan + Echo/Echo than for the Echo standard,
Echo + PropiMax/Echo + Moncut, Echo/Echo + Folicur, Echo/Folicur, and Echo/Tebuzol programs. Echo/Echo +
Eminent and Echo/Abound also had significantly higher yields compared with Echo + PropiMax/Echo + Moncut
and Echo/Folicur.
17
8 ALABMARCLUA XEIETSAIN
Trea
Echc
EVALUATION OF NEW FUNGICIDES FOR CONTROL OF FOLIAR AND SOIL-BORNE DISEASES OF PEANUT
IN SOUTHEAST ALABAMA, WREC
tment and rate/ac Application -Disease ratings- Yielc
timinqg
1  
LS
2  
SSR
3  
lb/ac
720 24.0 fl oz 1-7 2.74 4.3 4009
Echo 720 24.0 fl oz 1,2,7 3.2 3.3 -- 4195
Echo 720 16.0 fl oz + Muscle 3.6F 7.2 fi oz 3,4,5,6
Echo 720 24.0 fl oz 1,2,7 4.0 3.0 4404
Muscle 3.6F 7.2 fl oz 3,4,5,6
Echo 720 24.0 fl oz 1,2,7 2.7 2.8 
4638
Echo 720 16.0 fl oz + Eminent 125SL 26.0 fl oz 3,4,5,6
Echo 720 24.0 fl oz 1,2,7 2.9 3.0 
4058
Echo 720 16.0 fl oz + Folicur 3.6F 7.2 fl oz 3,4,5,6
Echo 720 24.0 fl oz + PropiMax 2.0 fl oz 1,2,4,6,7 3.2 3.3 3816
Echo 720 24.0 fl oz + Moncut 70DF 1.1 Ib 3,5
Echo 720 16.0 fl oz + Eminent 125SL 7.2 fl oz 1,2,4,6,7 3.3 2.7 4106
Echo 720 24.0 fl oz + Moncut 1.1 Ib 3,5
SA-010903 24.0 fl oz 1,2,4,6,7 3.3 4.2 4525
Echo 720 24.0 fl oz + Moncut 1.1 Ib 3,5
Echo 720 24.0 fl oz 1,2,7 3.7 3.3 
3929
Folicur 3.6F 7.2 fl oz 3,4,5,6
Echo 720 24.0 fl oz 1,2,4,6,7 2.8 3.2 
4590
Abound 2.08SC 18.2 fl oz 3,5
Echo 720 24.0 fl oz 1,2,4,6,7 3.6 4.5 4388
Echo 720 24.0 fl oz + Moncut 70DF 1.1 Ib 3,5
Headline 2.09EC 9.0 fl oz 1.5 3.2 2.8 4743
Artisan 3.6SE 13.0 fl oz + Echo 720 16.0 fl oz 3,4,5,6
Echo 720 24.0 fl oz 7
Echo 720 24.0 fl oz 1,2 3.9 3.5 4711
Artisan 3.6SE 32.0 fl oz 3,4
Echo 720 24.0 fl oz 5,6,7
Echo 720 24.0 fl oz 1,2 4.0 4.2 4316
Artisan 3.6SE 26.0 fl oz 3,4,5
Echo 720 24.0 fl oz 6,7
Echo 720 24.0 fl oz 1 3.0 2.8 4679
Abound 2.08SC 12.0 fl oz 2
Artisan 3.6SE 13.0 fl oz + Echo 720 16.0 fl oz 3,4,5,6
Echo 720 24.0 fl oz 7
Echo 720 24.0 fl oz 1,2,7
Tebuzol 7.2 fl oz 3,4,5,6 4.3 3.8 4017
LSD (P = 0.05) 0.6 1.7 640
' Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no disease;... 10 = completely dead plants).
Southern stem rot incidence was expressed as the number of diseased plants per 60 feet of row.
4 Mean separation within columns was according to Fisher's protected least significant difference (LSD) test (P = 0.05).
ALABAMA AGRICULTURAL EXPERIMENT STATION-
,N D
18
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
COMPARISON OF NEW FUNGICIDES FOR CONTROL OF LEAF SPOT AND
SOUTHERN STEM ROT ON PEANUT IN SOUTHEAST ALABAMA, WREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and L. W. Wells
Objective: To evaluate new fungicides and compare them with currently registered fungicides for control of early
leaf spot and southern stem rot and for yield response in an irrigated peanut production system in southeast Ala-
bama.
Methods: Peanut cultivar Carver was planted at the Wiregrass Research and Extension Center in Headland, Ala-
bama, on May 20 in a field with a history of peanut production. The soil type was a Dothan sandy loam (OM<1
percent). Seed were sown at a rate of approximately five seed per foot of row. On March 7, the test area was
paratilled and turned. On May 15, 1 quart per acre of Sonalan + 0.45 pint per acre of Strongarm were applied for
postemergent weed control. On June 21, 1.5 pints per acre of Storm and 1.5 pints per acre of 2,4-DB were applied
for weed control. Thrips were controlled with an in-furrow application of 6.5 pounds per acre of Temik 15G.
Plots consisted of four 30-foot rows spaced 3 feet apart arranged in a randomized complete block with six
replications. The plots were arranged under a central pivot irrigation system and irrigated on May 30, June 12, June
30, July 10, July 19, August 30, and September 6. Fungicides were applied ona 14- to 21-day schedule on June 27,
July 13, July 27, August 10, August 24, September 6, and September 20, using a four-row, tractor-mounted boom
sprayer with TX8 nozzles calibrated to deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 28 using the Florida leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation (< 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 6 immediately after plot inversion. Plots were harvested on October 12 and yields were
reported at 9.95 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through August. Rainfall increased in September and October, resulting in late onset of leaf
spot diseases.
While early leaf spot was observed early in the growing season on untreated control plots, late leaf spot was
primarily observed late in the season. Equus/Headline, Equus/Abound, and MANA-TEB 3.6FL (14.4 fluid ounces)
gave the best control of leaf spot diseases. The poorest leaf spot control-was obtained with the MANA-TEB (7.2
fluid ounces) treatment regimes and the seven-application program with two rates of Folicur (7.2 and 14.4 fluid
ounces). Incidence of southern stem rot (SSR) was lower than had been seen in previous years. Highest incidence
of this disease was noted with Equus/MANA-TEB (15.5 fluid ounces). All other fungicide regimes gave the same
level of SSR control. Yield response with the Equus/Abound program was superior to that obtained with the seven-
application MANA-TEB 3.6FL (7.2 fluid ounces) program; all other fungicide regimes yielded similarly.
19
20 ALAAAARCLUA EPRMN TTO
COMPARISON OF NEW FUNGICIDES FOR CONTROL OF LEAF SPOT AND SOUTHERN STEM ROT ON PEANUT
IN SOUTHEAST ALABAMA, WREC
Treatment and rate/ac Application -Disease ratings- Yield
timing
1  
L5
2  
SSR 
3  
Ilac
Folicur 3.6F 7.2 fl oz 1-7 4.44 3.7 4106
Folicur 3.6F 14.4 fl oz
MANA-TEB 3.6FL 7.2 fl oz
MANA-TEB 3.6FL 14.4 fI oz
MANA-TEB 20EW 15.5 fl oz
MANA-TEB 20EW 31.0 fl oz
1-7
1-7
1-7
1-7
1-7
Equus 720O24.Ofl oz
Folicur 3.6F 7.2 fl oz
Equus 720SST 24.0 fl oz
MANA-TEB 3.6FL 7.2 fl oz
Equus72OSST 24.floz
MANA-TEB 15.5 fl oz
Bravo Weather Stik 24.0 fl oz
Folicur 3.6F 7.2 fl oz
Equus 720O24.0Ofl oz
Abound 2.08S0 18.2 fl oz
Equus 72OSST 24.0 fl oz
Headline 2.O9EC 9.0 fl oz
Equus 720 SST 24.0 fl oz
Equus 720SST 24.0 fl oz + Moncut 7ODF 1.1 lb
1,2,7
3,4,5,6
1,2,7
3,4,5,6
112,7
3,415,6
1,2,7
3,4,5,6
1,2,4,6,7
3,5
1,2,416,7
395
1,2,4,6,7
315
4.5
5.0
3.2
4.3
3.4
4.0
4.4
4.0
4.3
2.9
2.8
3.5
3.2
3.4
3.2
4.5
3.6
4.2
5.6
10.0
3.7
3.6
4.6
2.8
3920
3833
4404
4477
4201
3864
4191
4162
3961
4569
4153
4090
LSD (P = 0.05) 0.6 3.2 710
1 Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot 
scoring system (1 = no disease;... 10 = completely dead plants).
3 Southern stem rot incidence was expressed 
as the number of diseased plants per 60 feet of 
row.
4~ Mean separation within columns was according to Fisher's 
protected least significant difference (LSD) test (P = 0.05).
20
ALABAMA AGRICULTURAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
COMPARISON OF NEW FUNGICIDES WITH CURRENTLY REGISTERED FUNGICIDES
FOR CONTROL OF FOLIAR AND SOIL-BORNE DISEASES OF PEANUT
IN SOUTHEAST ALABAMA, WREC
H. L. Campbell, A. K. Hagan, K. L. Bowen, and L. W. Wells
Objective: To evaluate new fungicides and experimental fungicides and compare them with currently registered
fungicides for control of early leaf spot and southern stem rot and yield response in an irrigated peanut production
system in southeast Alabama.
Methods: Peanut cultivar Carver was planted at the Wiregrass Research and Extension Center in Headland, Ala-
bama, on May 20 in a field with a history of peanut production. The soil type was a Dothan sandy loam (OM<1
percent). Seed were sown at a rate of approximately five seed per foot of row. On March 7, the test area was
paratilled and turned. On May 15, 1 quart per acre of Sonalan + 0.45 pint per acre of Strongarm were applied for
postemergent weed control. On June 21, 1.5 pints per acre of Storm and 1.5 pints per acre of 2,4-DB were applied
for weed control. Thrips were controlled with an in-furrow application of 6.5 pounds per acre ofTemik 15G.
Plots consisted of four 30-foot rows spaced 3 feet apart arranged in a randomized complete block with six
replications. The plots were arranged under a central pivot irrigation system and irrigated on May 30, June 12, June
30, July 10, July 19, August 30, and September 6. Fungicides were applied on a 14- to 21-day schedule on June 28,
July 10, July 28, August 10, August 22, September 6, and September 21, using a four-row, tractor-mounted boom
sprayer with TX8 nozzles calibrated to deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 28 using the Florida leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation (< 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 6 immediately after plot inversion. Plots were harvested on October 12 and yields were
reported at 9.95 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through August. Rainfall increased in September and October resulting in late onset of leaf
spot diseases.
While early leaf spot was observed early in the growing season on untreated control plots, late leaf spot was
primarily observed late in the season. With the exception of MANA-Chlorthal 82.5 WDG, leaf spot ratings with
the Bravo Weather Stik program were similar to those of the other fungicide programs. While both contain the
same concentration of chlorothalonil, SSR incidence was lower for the Bravo Weather Stik than the Bravo Ultrex
program. Yields for all fungicides were similar.
21
COMPARISON OF NEW FUNGICIDES WITH CURRENTLY REGISTERED FUNGICIDES FOR CONTROL OF FOLIAR
AND SOIL-BORNE DISEASES OF PEANUT IN SOUTHEAST ALABAMA, WREC
Treatment and rate/ac Application -Disease ratings- Yield
timing" LS
2  
SSR
3  
Ib/ac
Bravo Weather Stik 24.0 fl oz 1-7 2.84 5.2 3436
Equus 720SST 24.0 fl oz 1-7 3.2 7.7 --- 3461
MANA-Chlorthal 720FL 24.0 fl oz 1-7 2.8 6.5 3445
MANA-Chlorthal 720FL alt 24.0 fl oz 1-7 3.0 6.8 3743
Bravo Ultrex 1.4 lb 1-7 3.1 8.3 3462
Equus 82WDG 1.4 lb 1-7 3.2 6.2 3840
MANA-Chlorthal 82.5WDG 1.4 lb 1-7 3.7 6.0 3737
Stratego 7.0 fl oz 1-7 2.9 5.8 3737
LSD (P = 0.05) 0.4 2.6 NS
1 Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no disease;... 10 = completely dead plants).
3 Southern stem rot incidence was 
expressed as the number of diseased plants 
per 60 feet of row.
4 Mean separation within columns was according to Fisher's 
protected least significant difference (LSD) test (P = 0.05).
22 ALABAMA AGRICU LTU RAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL 
FUNGICIDE TRIALS
EVALUATION OF V-1 0116 AND V-1 0135 FOR CONTROL OF PEANUT DISEASES
IN SOUTHWEST ALABAMA, GCREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and M. D. Pegues
Objective: To evaluate V-10116 and V-10135 and compare them with currently registered 
products for their ef-
ficacy in controlling leaf spot diseases and southern stem rot of peanut in a dryland peanut production 
system in
southwest Alabama.
Methods: Peanut cultivar Georgia Green was planted on May 18 at the Gulf Coast Research and Extension Center
near Fairhope, Alabama, in a field with a history of peanut production. The soil type was a Malbis fine 
sandy loam
(OM<l percent) and seed were sown at a rate of approximately five seed per foot of row in raised beds 
with bed
knockers. On April 21, the test area was disked, ripped, and bedded. On June 26, 2 ounces per acre of Cadre +
0.225 ounce per acre of Strongarm + 1 pint per 25 gallons Induce were applied for postemergent weed control. 
On
August 21, 1.0 ounce per acre of Tracer + 1.0 ounce per acre of Karate were applied for insect control. Thrips were
controlled at planting with an in-furrow application of 6 to 7 pounds per acre of Temik 15G.
Plots consisted of four 30-foot rows spaced 38 inches apart arranged in a randomized complete block with
six replications. Fungicides were applied on a 14-day schedule on June 26, July 10, July 24, August 8, August
21, September 5, and September 20 using a four-row, ATV-mounted CO
2 
sprayer with TX8 nozzles calibrated to
deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 22 using the Florida leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation ( 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Rust was also rated on September 29 using the ICRISAT rust rating scale (1 = no disease, 2 = 10 percent
leaves affected, 3 = 20 percent leaves affected, 4 = 30 percent leaves affected, 5 = 40 percent leaves affected, 6 =
50 percent leaves affected, 7 = 60 percent leaves affected, 8 = 70 percent leaves affected, 9 = plants severely af-
fected, 80-100 percent leaves withering).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged 
plants)
were made on October 2 immediately after plot inversion. Plots were harvested on October 
13 and yields were re-
ported at 10.15 percent moisture. Significance of treatment effects were tested by analysis 
of variance and Fisher's
protected least significant difference (LSD) test (P= 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and 
monthly rainfall totals
were below normal through July. Above normal rainfall in August and September led to 
a late season increase in
foliar disease severity.
Poorest leaf spot and rust control was obtained with the program that included four applications 
of V-10135
(16 fluid ounces). Bravo/Folicur, Bravo/Folicur + NIS, and both Bravo/V-loll16 + NIS treatments gave less ef-
fective control of leaf spot diseases than the Bravo standard. Better rust control was also provided by the Bravo
standard and Bravo/Headline/Folicur compared with Bravo/Folicur as well as both Bravo/V-loll16 +NJS and V-
10116/Headline treatments. SSR severity was higher than had been observed in previous years. Bravo/Bravo +
Moncut gave significantly better SSR control than V-1o116 (2.56 fluid ounces) + NIS/Headline, Bravo/V- 10135,
Bravo/Headline, Bravo/V-1o1 16 (3 ounces) + NIS, and the Bravo standard. The low incidence of SSR was re-
flected in the high yield obtained with the Bravo/Bravo + Moncut treatment. Yields for the Bravo/Abound, Bravo/
Folicur +NIS, and Bravo/Headline/Folicur programs were similar to those recorded with Bravo/Bravo + Moncut.
23
24 ALAAARILTALEPRMNSTIO
EVALUATION OF V-I 0116 AND V-I 01 35 FOR CONTROL OF PEANUT DISEASES IN SOUTHWEST ALABAMA, GCREC
Treatment and rate/ac Application -Disease ratings- Yield
timing' LS
2  
Rust
3  
SSR 
4  
lac
Bravo 720 24.0 fl oz 1-7 2.95 3.8 5.8 4802
Bravo 720 24.0 fl oz
V-I0116 3.0 oz + NIS 0.125% v/v
Bravo 720 24.0 fl oz
V-I10116 4.0 oz + NIS 0.125% v/v
1,2,7
3,4,5,6
1,2,7
314,5,6
Bravo 720 24.0 fl oz
Headline 2.O9EC 9.0 fl oz
Folicur 3.61F 7.2 fl oz
11,7
2,4
31516
1,7
2,4
31516
Bravo 720 24.0 fl oz
Headline 2.O9EC 9.0 fI oz
V-I 0116 4.0 oz + NIS 0.125% v/v
Bravo 720 24.0 fI oz
Headline 2.O9EC 9.0 fl oz
V-10116 2.5 oz + NIS 0.125% v/v
Headline 2.O9EC 9.0 fI oz
V-10116 1.75 oz + NIS 0.125% v/v
Headline 9.0 fl oz
1,234,6,7
315
1,2,4,6,7
3l5
1,2,4,6,7
315
11214,6,7
3,5
112,7
3,4,5,6
1,2,7
314,516
V-I10116 34DC 20.3 fl oz
Headline 2.O9EC 9.0 fl oz
Bravo 720 24.0 fl oz
V-I 0135 16.0 fl oz
Bravo 720 24.0 fl oz
Folicur 3.6F 7.2 fl oz
Bravo 720 24.0 floz
Folicur 3.6F 7.2 fl oz + NIS 0.125% v/v
Bravo 720 24.0 fl oz
Abound 2.O8SC 18.5 fl oz
Bravo 720 24.0 fl oz
Bravo 720 24.0 fl oz + Moncut 70DF 1.-1 lb
11217
394,5j6
1,2,4,6,7
3,5
11,24,6,7
315
LSD (P = 0.05)
1 Fungicide applications were made at 14-day intervals unless otherwise- indicated.
3.4 4.5 5.3 4886
3.5 4.8 4.3 4519
3.2 4.5 3.0 5353
3.0
2.9
4.2 4.7 4795
3.8 5.5 4772
3.1 4.5 6.3 4221
3.0 4.2 4.7 4917
2.9 4.5 3.0 4749
4.5 5.7 5.2 4802
3.3 4.7 4.5 4871
3.3 4.3 4.0 5024
2.9 3.8 4.2 5506
3.1 3.7 2.5 5536
0.3 0.7 2.4 605
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no disease;... 10 = completely dead plants).
3 Rust was rated using the ICRISAT 1-9 rating scale (1 = no disease, .. 9 = plants severely 
affected, 80-1 00 percent leaves wither-
ing).
4 Southern stem rot incidence was expressed as the number of 
diseased plants per 60 feet of row.
IMean separation within columns was according to Fisher's protected least significant difference (LSD) test (P = 0.05).
24
ALABAMA AGRICULTURAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
COMPARISON OF NEW AND EXPERIMENTAL FUNGICIDES FOR PEANUT DISEASE
CONTROL IN SOUTHWEST ALABAMA, GCREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and M.D. Pegues
Objective: To evaluate DPX LEM 17 200SC, Endura, and Punch and compare them with currentlyregistered
products for their efficacy in controlling leaf spot diseases and southern stem rot of peanut in a dryland peanut
production system in southwest Alabama.
Methods: Peanut cultivar Georgia Green was planted on May 18 at the Gulf Coast Research and Extension Center
near Fairhope, Alabama, in a field with a history of peanut production. The soil type was a Malbis fine sandy loam
(OM<I percent) and seed were sown at a rate of approximately five seed per foot of row in raised beds with bed
knockers. On April 21, the test area was disked, ripped, and bedded. On June 26, 2 ounces per acre of Cadre +
0.225 ounce per acre of Strongarm + 1 pint per 25 gallons Induce were applied for postemergent weed control. On
August 21, 1.0 ounce per acre of Tracer + 1.0 ounce per acre of Karate were applied for insect control. Thrips were
controlled at planting with an in-furrow application of 6 to 7 pounds per acre ofTemik 15G.
Plots consisted of four 30-foot rows spaced 38 inches apart arranged in a randomized complete block with six
replications. Fungicides were applied on a 14- to 21-day schedule on June 26, July 10, July 24, August 7, August
21, September 5, and September 20 using a four-row, ATV-mounted, CO
2 
sprayer with TX8 nozzles calibrated to
deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 22 using the Florida leaf spot scoring system [1
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable 
in upper canopy with some defoliation (< 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Rust was also rated on September 29 using the ICRISAT rust rating scale (1 = no disease, 2 = 10 percent
leaves affected, 3 = 20 percent leaves affected, 4 = 30 percent leaves affected, 5 = 40 percent leaves affected, 6 =
50 percent leaves affected, 7 = 60 percent leaves affected, 8 = 70 percent leaves affected, 9= plants severely af-
fected, 80-100 percent leaves withering).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 2 immediately after plot inversion. Plots were harvested on October 13 and yields were
reported at 10.0 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through July. Above average rainfall in August and September led to a late season increase in
foliar disease severity.
The DPX LEM 50WDG full season program gave significantly poorer leaf spot control compared with all
other fungicide treatments. While significant differences in leaf spot control were noted between the remain-
ing fungicide programs, all gave effective control of these diseases. Rust, which first appeared in late August,
continued to intensify throughout September. The highest incidence of rust was also recorded for the DPX LEM
5OWDG program. Rust ratings for the majority of the remaining fungicide treatments were similar with the most
effective control provided by the Bravo standard, Punch + Bravo/DPX LEM17 200SC/Bravo, and Bravo/Moncut
treatments. SSR severity was higher than in previous years. The best SSR control was obtained with DPX LEMl17
200SC (both 16.8 and 23.9 fluid ounces) and both treatment levels had significantly lower SSR loci counts than
the full-season Bravo standard. Other treatment programs that included applications of either formulation of DPX
LEM17 also reduced SSR incidence compared with the Bravo standard. The DPX LEM17 200SC full season treat-
ments (all rates) and the DPX LEM 200SC + Punch treatment regimes had the highest yields.
25
26 ALAAAARCLUAEXEIETTTO4
COMPARISON OF NEW AND EXPERIMENTAL FUNGICIDES FOR PEANUT DISEASE CONTROL
IN SOUTHWEST ALABAMA, GCREC
Treatment and rate/ac Application Disease 
ratings- Yield
timing" LS
2  
Rust
3  
SSR 
4  
Ilac
Bravo 720 24.0 fl oz 1-7 2 .95 3.5 5.7 5506
DPX LEM 17 200SC 9.56 fl oz
DPX LEM 17 SOWDG 4.0 oz
DPX LEM 17 200SC 16.8 fl oz
DPX LEM 17 200SC 23.9 fl oz
Punch 5.0 fl oz + Bravo 72024.0floz
DPX LEM 17 200S0 16.8 fi oz
Bravo 720 24.0 fl oz
Tilt 3.6EC 2.0 fl oz + Bravo 16.0 fl oz
Abound 2.O8SC 18.2 fl oz
Bravo 720 24.0 fl oz
Tilt 3.6EC 2.0 fl oz + Bravo 720 16.0 fl oz
Folicur 3.6F 7.2 fl oz
Bravo 720 24.0 fl oz
DPX LEM 17 200SC 9.56 fl oz + Punch 5.0 fl oz
Endura 8.0 oz
1-7
1-7
1-7
1-7
1,2
3,5
4,6,7
1,2
3,5
416,77
1,2
3,5
4,617
1-7
1-7
3.3 4.2 2.8 6186
4.3 5.3 2.2 5597
3.0 3.8 1.5 6038
3.0 3.8 1.5 6270
3.0 3.7 2.5 5949
3.6 4.2 4.5 5330
3.4 4.3 4.3 5422
2.9 3.8 2.2 6041
3.0 4.0 4.8 5735
Bravo 720 24.0 fl oz
Folicur 3.6F 7.2 fl oz
Bravo 720 24.0 fl oz
Bravo 720 24.0 fl oz + Moncut 7ODF 1.-1 lb
Tilt/Bravo 
24.0 fl 
oz
Abound 2.080 C18.2 fl oz
Bravo 720 24.0 fl oz
Headline 2.O9EC 9.0 fl oz
Folicur 3.6F7 7.2 fl oz
Headline 2.09E0 12.0 fl oz
Bravo 720 24.0 fl oz
Tilt/Bravo 24.0 fl oz
Abound 2.O8SC 18.2 fl oz
Tilt/Bravo 24.0 fl oz
Bravo 720 24.0 fl oz
1,2, 7
3,4,5,6
1,2,41617
315
11214
395
6,7
1.5
3l5
4
617
1.5
315
4
617
3.6 4.7 3.2 5911
2.8 3.7 4.0 5506
3.0 4.3 3.3 5521
3.3 4.7 3.3 5682
3.3 4.3 4.5 5666
LSD (P = 0.05) 0.3 0.7 2.2 545
'Fungicide applications were made at 14-day intervals unless otherwise indicated.
2Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no disease;... 10 = completely dead plants).
3 Rust was rated using the ICRISAT 1-9 rating scale 
(1 = no disease, ...9 = plants severely affected, 80-1 00 
percent leaves wither-
ing).
4 Southern stem rot incidence was expressed 
as the number of diseased plants per 60 
feet of row.
5Mean separation within columns was according to Fisher's protected l-east significant difference (LSD) test (P = 0.05).
26
ALABAMA AGRICULTURAL EXPERIMENT STATIOR
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
EVALUATION OF NEW FUNGICIDES FOR PEANUT DISEASE CONTROL
IN SOUTHWEST ALABAMA, GCREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and M. D. Pegues
Objective: To evaluate Evito and Eminent 125SL and compare them with currently registered products for their
efficacy in controlling leaf spot diseases and southern stem rot of peanut in a dryland peanut production system in
southwest Alabama.
Methods: Peanut cultivar Georgia Green was planted on May 18 at the Gulf Coast Research and Extension Center
near Fairhope, Alabama, in a field with a history of peanut production. The soil type was a Malbis fine sandy loam
(OM<1 percent) and seed were sown at a rate of approximately five seed per foot of row in raised beds with bed
knockers. On April 21, the test area was disked, ripped, and bedded. On June 26, 2 ounces per acre of Cadre +
0.225 ounce per acre of Strongarm + 1 pint per 25 gallons Induce were applied for postemergent weed control. On
August 21, 1.0 ounce per acre of Tracer + 1.0 ounce per acre of Karate were applied for insect control. Thrips were
controlled at planting with an in-furrow application of 6 to 7 pounds per acre ofTemik 15G.
Plots consisted of four 30-foot rows spaced 38 inches apart arranged in a randomized complete block with
six replications. Fungicides were applied on a 14-day schedule on June 27, July 10, July 24, August 7, August
21, September 5, and September 20 using a four-row, ATV-mounted, CO
2 
sprayer with TX8 nozzles calibrated to
deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 26 using the Florida leaf spot scoring system [1
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some 
defoliation (< 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (< 90 percent); 9 = very few
remaining leaves covered with lesions ( 95 percent); 10 = completely defoliated or dead plants).
Rust was also rated on September 26 using the ICRISAT rust rating scale (1= no disease, 2 = 10 percent
leaves affected, 3 = 20 percent leaves affected, 4 = 30 percent leaves affected, 5 = 40 percent leaves affected, 6 =
50 percent leaves affected, 7 = 60 percent leaves affected, 8 = 70 percent leaves affected, 9 = plants severely af-
fected, 80-100 percent leaves withering).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 5 immediately after plot inversion. Plots were harvested on October 13 and yields were
reported at 10.2 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through July. Above normal rainfall in August and September led to a late season increase in
foliar disease severity.
The Echo/Folicur and Echo/Muscle programs generally provided less leaf spot control than nearly all of the
other fungicide programs, which usually provided similar control. Rust appeared in late August and progressively
intensified through September. The highest incidence of rust was also obtained with the Echo/Folicur and Echo!
Muscle programs. Lowest rust ratings were recorded for the Echo/Evito, Echo + PropiMax, and Echo/Echo + Emi-
nent programs. SSR severity was higher than had been observed in previous years. Incidence of SSR was higher
for Echo 720 full-season than all programs except for Echo/Evito, Echo/Evito + NIS, and Echo + PropiMax.
The Echo/Echo + Muscle treatment regime yielded higher compared with the majority of fungicide programs
screened.
27
EVALUATION OF NEW FUNGICIDES FOR PEANUT DISEASE CONTROL IN SOUTHWEST ALABAMA, GCREC
Treatment and rate/ac Application -Disease ratings- Yield
timinq
1  
LS
2  
Rust
3  
SSR
4  
lb/ac
Echo 720 24.0 fl oz 1-7 3.15 4.2 6.8 4550
Echo 720 24.0 fl oz
Evito 5.7 fl oz
Echo 720 24.0 fl oz
Evito 5.7 fl oz + NIS 0.25% v/v
Echo 720 24.0 fl oz
Evito + Folicur 3.6F 3.6 fl oz
Echo 720 24.0 fl oz
Evito 5.7 fl oz
Folicur 3.6F 7.2 fl oz
Echo 720 24.0 fl oz
Evito 3.5 fl oz + Folicur 3.6F
Echo 720 24.0 fl oz
Folicur 3.6F 7.2 fl oz
Echo 24.0 fl oz
Abound 2.08SC 18.2 fl oz
Echo 720 24.0 fl oz
Echo 720 24.0 fl oz + Moncut 70DF 1.1 Ib
Echo 720 16.0 fl oz + PropiMax 2.0 fl oz
Echo 720 16.0 fl oz + Eminent 125SL 7.2 fl oz
Echo 720 24.0 fl oz
Echo 720 16.0 fl oz + Muscle 7.2 fl oz
Echo 720 24.0 fl oz
Muscle 3.6F 7.2 fl oz
Echo 720 24.0 fl oz
Echo 720 16.0 fl oz + Eminent 125SL 26.0 fl oz
1,2,4,6,7
3,5
1,2,4,6,7
3,5
1,2,4,6,7
3,5
1,2,7
3,5
4,6
1,2,7
3,4,5,6
1,2,7
3,4,5,6
1,2,4,6,7
3,5
1,2,4,6,7
3,5
1-7
1-7
1,2,7
3,4,5,6
1,2,7
3,4,5,6
1,2,7
3,4,5,6
3.3 3.7 5.8 4535
3.3 3.8 4.8 5062
3.1 4.2 3.8 4879
3.6 4.3 3.8 4925
3.1 4.5 2.3 5284
4.3 5.0 4.8 4764
3.3 4.2 4.0 5062
3.2 4.2 2.5 5368
3.1 3.7 5.8 4772
3.0 3.8 4.7 4986
3.0 4.3 3.3 5789
3.8 4.7 3.5 5070
3.1 3.7 2.2 5345
LSD (P = 0.05) 0.4 0.7 2.0 612
' Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no disease;... 10 = completely dead plants).
3 Rust was rated using the ICRISAT 1-9 rating scale (1 = no disease, 
...9 = plants severely affected, 80-100 percent leaves wither-
ing).
4 Southern stem rot incidence was expressed as the 
number of diseased plants per 60 feet of row.
5 Mean separation within columns was according to Fisher's protected 
least significant difference (LSD) test (P = 0.05).
28
ALABAMA AGRI CU LTU RAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
EVALUATION OF PROVOST AND ABSOLUTE FOR PEANUT DISEASE CONTROL
IN SOUTHWEST ALABAMA, GCREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and M.D. Pegues
Objective: To evaluate Provost and Absolute and compare them with currently registered products-for their 
ef-
ficacy in controlling leaf spot diseases and southern stem rot of peanut in a dryland peanut production system 
in
southwest Alabama.
Methods: Peanut cultivar Georgia Green was planted on May 16 at the Gulf Coast Research and Extension Center
near Fairhope, Alabama, in a field with a history of peanut production. The soil type was a Malbis fine sandy loam
(OM<I percent) and seed were sown at a rate of approximately five seed per foot of row in raised beds with bed
knockers. In-furrow applications of fungicides were applied at planting using a tractor-mounted CO
2 
sprayer with
8001 nozzles calibrated to deliver 5 gallons per acre at 20 psi. On April 21, the test area was disked, ripped, and
bedded. On May 18, 1.5 pints per acre of Dual Magnum were made for pre-emergent weed control. On June 26,
2 ounces per acre of Cadre + 0.225 ounce per acre of Strongarm + 1 pint per 25 gallons Induce were applied for
postemergent weed control. On August 21, 1.0 ounce per acre of Tracer + 1.0 ounce per acre of Karate were applied
for insect control. Thrips were controlled at planting with an in-furrow application of 6 to 7pounds per acre of Temik
15G.
Plots consisted of four 30-foot rows spaced 38 inches apart arranged in a randomized complete block with
six replications. Fungicides were applied on a 14- to 21-day schedule on June 26, July 5, July 10, July 24, August
8, August 21, September 5, and September 20 using a four-row, ATV-mounted, CO
2 
sprayer with TX8 nozzles
calibrated to deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 27 using the Florida leaf spot scoring system [I =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation (<25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (<90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = 
completely defoliated or dead plants).
Rust was also rated on September 27 using the ICRISAT rust rating scale (1 = no disease, 2 = 10 percent
leaves affected, 3 = 20 percent leaves affected, 4 = 30 percent leaves affected, 5 = 40 percent leaves affected, 6 =
50 percent leaves affected, 7 = 60 percent leaves affected, 8 = 70 percent leaves affected, 
9 = plants severely af-
fected, 80-100 percent leaves withering).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged 
plants)
were made on October 2 immediately after plot inversion. Plots were harvested on October 5 and 
yields were re-
ported at 10.1 percent moisture. Significance of treatment effects were tested by analysis 'ofvariance 
and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly 
rainfall totals
were below normal through July. Above normal rainfall in August and September led to a late season increase in
foliar disease severity.
All programs that included either Provost or Absolute gave better leaf spot control than did the standard
Echo/Folicur standard; however, none were significantly better in controlling leaf spot diseases than the full season
Echo program. Rust appeared in late August and progressively intensified through September. Proline/Echo/Pro-
yost gave significantly better control of rust than the Echo/Provost, Abound (IF)/Echo/Abound, Echo/Abound,
and Headline/Folicur/Headline/Echo programs. Rust severity was significantly higher for Echo/Folicur than with
all but one other fungicide program. SSR severity was higher than had been observed in previous years. Highest
SSR loci counts were recorded for the full-season Echo 720 standard. Proline/Echo/Provost, which controlled
SSR better than both of the Absolute programs, had SSR loci counts similar to those of the remaining fungicide
programs. With the exception of the Echo/Provost (4 fluid ounces) treatment regime, all treatments that included
Provost yielded higher than other treatments except the Echo/Folicur treatment and were significantly better than
29
the Echo-only program. All programs that included applications of Provost or Absolute had yields that were simi-
lar to those recorded for the standard Echo/Folicur program. The Provost programs also had significantly higher
yield compared with the season-long Echo 720 standard.
EVALUATION OF PROVOST AND ABSOLUTE FOR PEANUT DISEASE CONTROL IN SOUTHWEST ALABAMA, GCREC
Treatment and rate/ac Application -Disease ratings- Yield
timinq LS
2  
Rust
3  
SSR
4  
lb/ac
Echo 720 24.0 fl oz 1-7 3.15 3.8 6.2 3854
Echo 720 24.0 fl oz
Provost 433SC 8.0 fl oz
Proline 5.7 fl oz
Echo 720 24.0 fl oz
Provost 433SC 8.0 fi oz
Echo 720 24.0 fl oz
Provost 433SC 5.0 fl oz
Echo 720 24.0 fl oz
Provost 433SC 4.0 fl oz
Absolute 500SC 3.5 fl oz + Induce 0.06% v/v
Echo 720 24.0 fl oz
Absolute 500SC 7.0 fl oz + Induce 0.06% v/v
Echo 720 24.0 fl oz
Echo 720 24.0 fl oz
Provost 433SC 10.7 fl oz
Echo 720 24.0 fl oz
Folicur 3.6F 7.2 fl oz
Abound 2.08SC 6.0 fl oz
Echo 720 24.0 fl oz
Abound 2.08SC 18.5 fl oz
Echo 720 24.0 fl oz
Abound 2.08SC 18.5 fl oz
Echo 720 24.0 fl oz
Echo 720 24.0 fl oz + Moncut 70DF 1.1 lb
Headline 2.09EC 9.0 fl oz
Folicur 3.6F 7.2 fl oz
Headline 2.09EC 12.0 fl oz
Echo 720 24.0 fl oz
1,2,7
3,4,5,6
In-furrow
1,2,7
3,4,5,6
1,2,7
3,4,5,6
1,2,7
3,4,5,6
1,3,5
2,4,6,7
1,3,5
2,4,6,7
1,2,7
3,4,5,6
1,2,7
3,4,5,6
In-furrow
1,2,4,6,7
3,5
1,24,6,7
3,5
1,2,4,6,7
3,5
1.5
3,5
4
6,7
3.0 3.7 3.5 4833
2.9 3.5 2.0 4795
2.9 3.8 3.8 4772
3.0 3.8 3.8 4450
3.0 4.0 4.3 4450
3.0 4.0 4.0 4741
3.0 4.2 3.2 4795
3.7 4.8 2.8 5009
3.1 4.2 3.3 4460
2.9 4.2 3.5 4557
2.9 3.7 2.7 4928
3.2 4.5 3.7 4389
LSD (P = 0.05) 0.2 0.6 1.8 689
1 Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot 
scoring system (1 = no disease;... 10 = completely dead plants).
3 Rust was rated using the ICRISAT 1-9 rating scale (1 = no disease, 
...9 = plants severely affected, 80-100 percent leaves wither-
ing).
4 Southern stem rot incidence was expressed as the 
number of diseased plants per 60 feet of row.
5 Mean separation within columns was according to Fisher's protected 
least significant difference (LSD) test (P = 0.05).
30
ALABAMA AGRICULTURAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
COMPARISON OF 14-AND 21-DAY CALENDAR SCHEDULES
FOR PEANUT DISEASE CONTROL IN ALABAMA, GCREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and M.D. Pegues
Objective: To evaluate new and existing formulations of chlorothalonil and compare them at 14- and 21-day ap-
plication intervals for their efficacy in controlling leaf spot diseases and southern stem rot of peanut in a dryland
peanut production system in southwest Alabama.
Methods: Peanut cultivar Georgia Green was planted on May 16 at the Gulf Coast Research and Extension Center
near Fairhope, Alabama, in a field with a history of peanut production. The soil type was a Malbis fine sandy loam
(OM<1 percent) and seed were sown at a rate of approximately five seed per foot of row in raised beds with bed
knockers. On April 21, the test area was disked, ripped, and bedded. On June 26, 2 ounces per acre of Cadre +
0.225 ounce per acre of Strongarm + 1 pint per 25 gallons Induce were applied for postemergent weed control. On
August 21, 1.0 ounce per acre of Tracer + 1.0 ounce per acre of Karate were applied for insect control. Thrips were
controlled at planting with an in-furrow application of 6 to 7 pounds per acre of Temik 15G.
Plots consisted of four 30-foot rows spaced 38 inches apart arranged in a randomized complete block with
six replications. Fungicides were applied on a 14-day schedule on June 27, July 10, July 24, August 8, August 21,
September 5, and September 20 and on a 21-day schedule on June 27, July 17, August 8, August 28, and Septem-
ber 20 using a four-row, ATV-mounted, CO
2 
sprayer with TX8 nozzles calibrated to deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 26 using the Florida leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation (<25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (<90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Rust was also rated on September 26 using the ICRISAT rust rating scale (1 = no disease, 2 = 10 percent
leaves affected, 3 = 20 percent leaves affected, 4 = 30 percent leaves affected, 5 = 40 percent leaves affected, 6 =
50 percent leaves affected, 7 = 60 percent leaves affected, 8 = 70 percent leaves affected, 9 = plants severely af-
fected, 80-100 percent leaves withering).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 3 immediately after plot inversion. Plots were harvested on October 6 and yields were re-
ported at 10.0 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through July. Above normal rainfall in August and September led to a late season increase in
foliar disease severity.
All programs gave similar levels of leaf spot control when applied at 14-day intervals. When applied at 21-
day intervals, Equus 720SST controlled leaf spot significantly better than the Bravo Weather Stik. Overall, the
21-day treatments were surprisingly effective in controlling leaf spot diseases. Even though rust severity increased
in August and September, there were no significant differences in rust ratings among the fungicide programs. SSR
severity was higher than had been observed in previous years. Incidence of SSR was generally similar for all pro-
grams except for Echo 720 14-day. The 21-day regimes generally yielded higher than 14-day regimes.
31
32 ALABMARCLUA XEIETSAIN
COMPARISON OF 14- AND 21 -DAY CALENDAR SCHEDULES FOR PEANUT DISEASE CONTROL
IN SOUTHWEST ALABAMA, GCREC
Treatment and rate/ac Application -Disease ratings- Yield
timing' LS
2
Rust
3
SSR 
4
Ilac
14-day calendar schedule
Bravo Weather Stik 24.0 fI oz 1-7 2.925 4.2 5.3 5322
Equus 720 SST 24.0 fl oz 1-7 2.83 4.0 5.0 5353
MANA-Chlorthal 24.0 fI oz 1-7 2.83 4.3 4.8 5559
MANA-Chlorthal-alt 24.0 fl oz 1-7 2.83 3.8 3.5 5659
Echo 720 24.0 fl oz 1-7 2.92 4.3 7.3 5062
21-day calendar schedule
Bravo Weather Stik 24.0 fl oz 1-5 3.00 4.2 4.8 5643
Equus 720 SST 24.0 fl oz 1-5 2.67 4.2 5.8 5452
MANA-Chlorthal 24.0 fl oz 1-5 2.75 3.7 6.8 5919
MANA-Chlorthal-alt 24.0 fl oz 1-5 2.192 3.7 5.8 5513
Echo 720 24.0 fl oz 1-5 2.92 4.3 6.0 5926
LSD (P = 0.05) 0.2 NS 2.5 509
1Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf 
spot scoring system (1 = no disease;... 10= completely dead plants).
3Rust was rated using the ICRISAT 1-9 rating scale (1 = no disease, 
.. 9 = plants severely affected, 80-1 00 percent leaves wither-
ing).
4~ Southern stem rot incidence was expressed as 
the number of diseased plants per 60 feet of row.
Mean separation within columns was according to Fisher's protected least significant difference (LSD) test (P= 0.05).
ALABAMA AGRICULTURAL EXPERIMENT STATION-
-- I
32
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
EVALUATION OF EXPERIMENTAL FUNGICIDES FOR PEANUT DISEASE CONTROL
IN SOUTHWEST ALABAMA, GCREC
H. L. Campbell, A. K. Hagan, K. L Bowen, and M. D. Pegues
Objective: To evaluate new fungicides and compare them at 14-day application intervals for their efficacy in
controlling leaf spot diseases and southern stem rot of peanut in a dryland peanut production system in southwest
Alabama.
Methods: Peanut cultivar Georgia Green was planted on May 16 at the Gulf Coast Research and Extension Center
near Fairhope, Alabama, in a field with a history of peanut production. The soil type was a Malbis fine sandy loam
(OM<1 percent) and seed were sown at a rate of approximately five seed per foot of row in raised beds with bed
knockers. On April 21, the test area was disked, ripped, and bedded. On June 26, 2 ounces per acre of Cadre +
0.225 ounce per acre of Strongarm + 1 pint per 25 gallons Induce were applied for postemergent weed control. On
August 21, 1.0 ounce per acre of Tracer + 1.0 ounce per acre of Karate were applied for insect control. Thrips were
controlled at planting with an in-furrow application of 6 to 7 pounds per acre of Temik 15G.
Plots consisted of four 30-foot rows spaced 38 inches apart arranged in a randomized complete block with
six replications. Fungicides were applied on a 14-day schedule on June 27, July 10, July 24, August 8, August
21, September 5, and September 20 using a four-row, ATV-mounted, CO
2 
sprayer with TX8 nozzles calibrated to
deliver 15 gallons per acre.
Early and late leaf spot were visually rated on September 26 using the Florida leaf spot scoring system [1 =
no disease; 2 = very few lesions in upper canopy; 3 = few lesions in lower and upper canopy; 4= some lesions with
slight defoliation (< 10 percent); 5 = lesions noticeable in upper canopy with some defoliation (5 25 percent); 6 =
lesions numerous with significant defoliation (< 50 percent); 7 = lesions numerous with heavy defoliation (< 75
percent); 8 = very numerous lesions on few remaining leaves with heavy defoliation (5 90 percent); 9 = very few
remaining leaves covered with lesions (< 95 percent); 10 = completely defoliated or dead plants).
Rust was also rated on September 26 using the ICRISAT rust rating scale (1 = no disease, 2 = 10 percent
leaves affected, 3 = 20 percent leaves affected, 4 = 30 percent leaves affected, 5 = 40 percent leaves affected, 6 =
50 percent leaves affected, 7 = 60 percent leaves affected, 8 = 70 percent leaves affected, 9 = plants severely af-
fected, 80-100 percent leaves withering).
Counts of southern stem rot (SSR) hits (1 hit was defined as < 1 foot of consecutive SSR-damaged plants)
were made on October 3 immediately after plot inversion. Plots were harvested on October 6 and yields were re-
ported at 10.0 percent moisture. Significance of treatment effects were tested by analysis of variance and Fisher's
protected least significant difference (LSD) test (P = 0.05).
Results: During the 2006 peanut production season, temperatures were near normal and monthly rainfall totals
were below normal through July. Above normal rainfall in August and September led to a late season increase in
foliar disease severity.
Bravo/KFD-09-01 + Bravo controlled leaf spot diseases significantly better than Bravo full season, Bravo/
Folicur, and Bravo/KFD-09-01. Even though rust severity increased in August and September, there were no
significant differences in rust ratings between fungicide programs. Severity of SSR was higher than had been
observed in previous years. Incidence of SSR was higher for Bravo full-season compared with Bravo/Folicur and
Bravo/KFD-09-01 + Folicur. Yield was higher for Bravo/KFD-09-01 treatments than for the Bravo/Abound pro-
gram. Otherwise, yields for the remaining fungicide programs were similar.
33
EVALUATION OF EXPERIMENTAL FUNGICIDES FOR PEANUT DISEASE CONTROL IN SOUTHWEST ALABAMA, GCREC
Treatment and rate/ac Application -Disease ratings- Yield
timinq
1  
LS
2  
Rust
3  
SSR
4  
lb/ac
Bravo Weather Stik 24.0 fl oz 1,2,7 3.25 4.7 3.0 5292
Folicur 3.6F 7.2 fl oz 3,4,5,6
Bravo Weather Stik 24.0 fl oz
KFD-09-01 3.6F 7.2 fl oz
Bravo Weather Stik 24.0 fl oz
KFD-09-01 3.6 F 7.2 fl oz + Topsin M 4.5F 5.0 fl oz
Bravo Weather Stik 24.0 fl oz
KFD-09-01 3.6F 7.2 fl oz + Bravo 720 24.0 fl oz
Bravo Weather Stik 24.0 fl oz
Abound 2.08SC 18.5 fl oz
Bravo Weather Stik 24.0 fl oz
1,2,7
3,4,5,6
1,2,7
3,4,5,6
1,2,7
3,4,5,6
1,2,4,6,7
3,5
1-7
3.3 4.7 3.8 -- 5353
2.9 4.7 4.2 5284
2.7
2.9
3.8 2.8 5682
4.0 4.2 4848
3.0 4.5 5.0 5292
LSD (P = 0.05) 0.3 1.1 1.9 474
1 Fungicide applications were made at 14-day intervals unless otherwise indicated.
2 Early and late leaf spot were assessed using the Florida leaf spot scoring system (1 = no disease;... 
10 = completely dead plants).
3 Rust was rated using the ICRISAT 1-9 rating scale (1 = no disease, ...9 = plants severely affected, 80-100 percent leaves wither-
ing).
4 Southern stem rot incidence was expressed 
as the number of diseased plants per 60 feet of 
row.
5 Mean separation within columns was according to 
Fisher's protected least significant difference (LSD) test (P 
= 0.05).
34
ALABAMA AGRICULTURAL EXPERIMENT STATION-
PEANUT DISEASE CONTROL FIELD TRIALS, 2006: EXPERIMENTAL FUNGICIDE TRIALS
YIELD OF EXPERIMENTAL PEANUT LINES AND THEIR SENSITIVITY TO TSWV,
LEAF SPOT DISEASES, AND WHITE MOLD, WREC
A. K. Hagan, H. L. Campbell, K. L. Bowen, B. Gamble, and J. Bostick
Objective: To assess the yield potential and the susceptibility of experimental runner and Virginia-type peanut
cultivars to tomato spotted wilt, early and late leaf spot, and white mold in a well-rotated, irrigated production
system in southeast Alabama.
Methods: On May 18, experimental runner peanut lines were planted at a rate of approximately six seed per foot
of row in a field that was cropped to peanut after 2 years of cotton using conventional tillage practices in a Dothan
fine sandy loam (OM<1 percent). Gypsum at a rate of 600 pounds per treated acre was applied on a 14-inch band
over the row middles. Disease and weed control as well as soil fertility recommendations of the Alabama Coopera-
tive Extension System were followed. The plot area was irrigated as needed. Escape weeds were pulled by hand.
A randomized complete block design with four replications per peanut cultivar was used. Plots were four 20-foot
rows spaced 3 feet apart. Fungicides were applied for the control of leaf spot diseases at 2-week intervals with a
tractor-mounted boom sprayer with three TX-8 nozzles per row that delivered approximately 15 gallonslons of
spray volume per acre.
Incidence of tomato spotted wilt virus (TSWV) was determined by counting the number of hits (1 hit was
defined as < 1 foot of consecutive diseased plant(s) per row). Ratings for TSWV were recorded on September 14,
September 22, October 5, and October 25 for the maturity group 3, 4, 4.5, and 5 cultivars, respectively.
Early and late leaf spot (LS) were rated together using the Florida peanut leaf spot scoring system [1 = no dis-
ease, 2 = very few lesions in canopy, 3 = few lesions in lower and upper leaf canopy, 4 = some lesions in lower and
upper canopy with light defoliation (<10 percent), 5 = lesions noticeable in upper canopy with some defoliation
(<25 percent), 6 = lesions numerous with significant defoliation (<50 percent), 7 = lesions numerous with heavy
defoliation (<75 percent), 8 = numerous lesions on few remaining leaves with severe defoliation (590 percent), 9 =
very few remaining leaves covered with lesions and severe defoliation (<95 percent), and 10 = plants defoliated or
dead]. Final leaf spot ratings were taken on September 22, October 3, October 10, and October 25 for the maturity
group 3, 4, 4.5, and 5 cultivars, respectively.
White mold hit counts (1 hit was defined as < 1 foot of consecutive white mold-damaged 
plants per row),
were collected immediately after plot inversion on September 22, October 3, October 10, and October 26 for the
maturity group 3, 4, 4.5, and 5 cultivars, respectively.
Plots were harvested with a field combine. Yields were reported at 7 percent moisture. Significance of treat-
ment effects were tested by analysis of variance and Fisher's protected least significant difference test (P=0.05).
Results: Monthly rainfall totals for May, June, and early July were below to well below the historical average,
while afternoon temperatures, particularly in June and July, were above to well above the seasonal average for this
location.
Significant differences in the incidence of TSWV and white mold as well as severity of leaf spt diseases were
noted between peanut cultivars. Incidence of TSWV in TX033630 and N03091T was similar to the ratings for
the susceptible standards Florunner and NC-7. In contrast, the disease resistant standard AP-3 had lower TSWV
ratings than all experimental lines except for UFO3514, GA 012517, and GA 012519. Both early and late leaf spot
were noted on most experimental lines. Heaviest leaf spotting and noticeable defoliation was noted on GA 012519.
Lowest LS ratings were recorded for the standard NC-7 and CRSP648. Incidence of white mold was higher on
NC-7, however, than all lines except for NO 1013T and N03089. Most of the experimental lines had white mold hit
counts that were similar to those of the disease resistant standard AP-3. Overall, yields declined as the incidence
of TSWV increased. Typically, highest yields were recorded for the TSWV resistant lines such as UFO3514, GA
012519, and the commercial cultivar AP-3.
In a rotation situation, TSWV has more impact on yield than either leaf spot diseases or white mold. The ex-
treme susceptibility of the Florunner peanut to TSWV was clearly demonstrated. In contrast, the experimental peanut
lines and AP-3 with the lowest TSWV ratings often had the highest yields. None of the Virginia experimental peanut
lines was as resistant nor had the yield potential of the best experimental runner peanut cultivars.
35
36 
ALABAMAAGRICULTURAL EXPERIMENT STATION
RESPONSE OF EXPERIMENTAL RUNNER AND VIRGINIA PEANUT LINES
TO DISEASES, WREC
Peanut Line Disease ratings
TSWV Leaf spot White mold Yield
hits/60 ft row ratings hits/60 ft row lb/ac
Maturity Group 3
NC-7 23.0 abc 2.8 hi 8.0 a 2577i
GA 012535 17.8 de 3.8 efg 1.5 fg 5518 abc
VT976133 21.8 bcd 3.4 fgh 2.0 d-f 4265 efg
TX 033630 26.0 a 4.3 cde 0.0 g 4828 b-e
Maturity Group 4
Florunner 25.5 ab 3.6 efg 4.0 b-f 3612 gh
UF03514 6.3 ij 3.5 e-h 0.5 fg 5825 a
UF05309 17.8 de 3.9 d-g 3.3 c-g 4774 b-f
UF06304 18.3 de 3.6 efg 3.0 c-g 4701 c-f
N03091T 22.0 a-d 3.1 ghi 4.8 a-e 3939 fgh
N01013T 1.8 de 4.3 cde 7.0 ab 3376 hi
N03089T 19.0 cde 2.8 hi 6.3 abc 3249 hi
CRSP925 15.8 ef 3.5 e-h 1.8 efg 3576 gh
Maturity Group 4.5
AP-3 8.0 hij 4.1 c-f 3.0 c-g 5627 ab
CRSP648 13.0 fg 2.5 i 3.5 b-g 4701 c-f
Maturity Group 5
GA 012519 5.3 j 5.8 a 5.3 a-d 5173 a-d
GA 012517 5.5 j 4.9 bc 2.3 d-g 4592 def
1 Means in each column that are followed by the same letter were not significantly different ac-
cording to ANOVA and Fisher's protected least significant difference (LSD) test (P=0.05).
36
ALABAMA AGRICU LTU RAL EXPERIMENT STATION-

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