MANAGEMENT
OF DISEASES
ON COTTON
AND
SOYBEAN,
1999
ENTOMOLOGY AND PLANT PATHOLOGY 
DEPARTMENTAL SERIES NO. 2
MARCH 2000
ALABAMA AGRICULTURAL EXPERIMENT 
STATION
LUTHER WATERS, DIRECTOR
AUBURN UNIVERSITY
AUBURN, ALABAMA

Table of Contents
Page
Contributors, Financial Assistance
Introduction ....................................................................................................................................................... 1
G row ing C onditions .......................................................................................................................................... 1
Application M ethods.........................................................................................................................1
D ata C ollection .................................................................................................................................................. 1
Statistical A nalysis ............................................................................................................................................. 2
Evaluation of Selected Experimental Seed Treatments for Control
of Seedling Disease of Cotton
Tennessee Valley Research and Extension Center ................................................................................ 3
Evaluation of Selected Seed Treatments for Control of Rhizoctonia solani
and Pythium spp. on Seedling Disease of Cotton
Tennessee Valley Research and Extension Center ................................................................................ 6
Evaluation of In-furrow Fungicide and Fungicide Biological Combinations for Control
of Rhizoctonia solani and Pythium spp. on Seedling Disease of Cotton
W iregrass Research and Extension Center ........................................................................................... 8
Tennessee Valley Research and Extension Center ............................................................................. 12
Prattville Experiment Field...........................................14
Evaluation of Terraclor and Rovral Fungicide Treatments for Control
of Rhizoctonia solani and Pythium spp. on Seedling Disease of Cotton
Tennessee Valley Research and Extension Center ............................................................................. 16
Evaluation of Quadris for Control of Seedling Disease of Cotton
Wiregrass Research and Extension Center Station ............................................................................. 18
Prattville Experiment Field................................................. 20
Tennessee Valley Research and Extension Center ............................................................................. 22
Evaluation of Selected Fungicides for Control of Cotton Boll Rot Disease
Gulf Coast Research and Extension Center....................................... 24
M onroeville Experim ent Field .......................................................................................................... 26
Evaluation of Quadris and Benlate Fungicides for Soybean Foliar Disease Control
Monroeville Experiment Field .......................................................... ..................................................... 28
Evaluation of Selected Seed Treatments, In-furrow, and Foliar Sprays
for Soybean Stem Canker Control
Monroeville Experiment Field............................................... 30
Chemicals Used in the Soil-borne and Foliar Disease Studies................................................... 32
The information contained herein is available to all persons regardless of race,
color, sex, or national origin.
Contributors
James R. Akridge
Superintendent
Monroeville Experiment Field
Brewton Experiment Field
Lee Campbell
Research Associate II
Department of Entomology and Plant Pathology
Auburn University
Linda Carter
Lab Technician III
Department of Entomology and Plant Pathology
Auburn University
Don P. Moore
Superintendent
Prattville Experiment Field
Charles D. Monks
Associate Professor & Extension Specialist
Department of Agronomy and Soils
Auburn University
Bobby E. Norris
Superintendent
Tennessee Valley Research and Extension
Center
Malcomb E. Pegues
Supervisor
Gulf Coast Research and Extension Center
Larry W. Wells
Superintendent
Wiregrass Research and Extension Center
Financial Assistance
The following agencies provided financial support for the 1999 cotton and soybean disease research program.
Zeneca
James N. Lunsford
218 Lakewood Dr.
Enterprise, AL 36330
Uniroyal Chemical
Keith H. Griffith
5211 Fawnway Ct.
Orlando, FL 32819
Wilfarm L.L.C.
Julius E. Fajardo
3705 North 
1 3 9
th Street
Kansas City, KS 66109
Uniroyal Chemical
Robert Hinkle
3530 Rhett Butler Dr.
Hernando, MS 38632
Management of Diseases
on Cotton and Soybean, 1999
K. S. McLean and W. S. Gazaway'
INTRODUCTION
Soybeans and cotton are widely grown in Alabama and producers are constantly battling 
a variety of diseases.
This report summarizes the results of soil-borne and foliar disease trials on soybean and cotton conducted by
Alabama Agricultural Experiment Station (AAES) personnel in 1999. It provides management information for
producers, industry cooperators, colleagues at universities, and other interested persons.
The soil-borne and foliar disease trials were located at the following AAES stations: Tennessee 
Valley
Research and Extension Center, Belle Mina; Gulf Coast Research and Extension Center, Fairhope; Wiregrass
Research and Extension Center, Headland; Monroeville Experiment Field, Monroeville; and Prattville 
Experi-
ment Field, Prattville.
GROWING CONDITIONS
Test plots at Tennessee Valley Research and Extension Center, Gulf Coast Research and Extension Center, and
Wiregrass Research and Extension Center received adequate moisture or were supplemented by 
standard irrigation
practices. The Monroeville and Prattville Experimental Fields do not have 
irrigation. Prattville received adequate
moisture through the growing season; however, Monroeville experienced a 
drought from July through the end of
the season.
APPLICATION METHODS
Granular applications of Terraclor Super X 18.8G, Terraclor Super X G/WGB49, Terraclor 
15G, and Ridomil
Gold PC 11G were applied in the seed furrow utilizing two row cone planter 
equipped with granular chemical
applicators.
Terraclor 2E, Quadris 2SC, ACT, and Rovral 4F were applied as an in-furrow spray at planting 
utilizing a flat
tip 8002E nozzle directed at an angle across the furrow and calibrated to deliver 20 GPA at 30 
PSI.
LS 288 and RTU BaytanThiram + Allegiance were applied to a known amount of seed 
in a Ziploc bag and
shaken until the seeds were completely covered and then allowed to dry. All other seed 
treatments were applied to
the seed by the manufacturer.
Quadris 2SC and Benlate 50 WP were applied as broadcast sprays utilizing a CO
2
-charged, backpack system
with a two row boom equipped with two flat tip 8001 nozzles per row calibrated to 
deliver 10GPA at 30 PSI.
Quadris 2SC, Benlate 50 WP, Tilt, Terraclor 4F, and Rovral 4F were applied as foliar 
sprays using TX-12 cone
nozzles mounted on ground slides spraying upward with two nozzles per row calibrated 
to deliver 26GPA at 75
PSI.
DATA COLLECTION
Plant population densities were determined from 14 to 21 and 28 to 35 days after 
planting. A skip index
rating was determined at 14 to 21 days after planting using the following rating scale: 
1 = 1.5 feet of gap between
'McLean is an Assistant Professor and Gazaway is a Professor, Emeritus, in the Auburn University Department of Entomology
and Plant Pathology.
2 ALABAMAAGIUTRLEPRMNSAIO
plants, 2 = 2.5 feet of gap, 3 = 3.5 feet of gap, and so on. Plant vigor was determined by visual ratings at 28 to 35
days after planting. Vigor was based on observations of seedling health and rated on a 1 to 4 scale with 1 repre-
senting the healthiest plants and 4 representing dead plants. Open bolls were counted approximately three weeks
before harvest. Percent of open bolls was based on the number of open bolls divided by the total number of bolls
on five plants and multiplied by 100 to determine early maturity. Yields were harvested using station equipment
and reported as pounds of seed cotton per acre.
STATISTICAL ANALYSIS
Data presented in this report were statistically analyzed using the Statistical analysis System (SAS Institute
Inc., Cary, N.C.). Data were subjected to ANOVA appropriate for the experimental design used and means were
separated using the least significant difference test. All statistical tests were performed at the 5% level of signifi-
cance.
Trade names are used throughout this report for clarity, except where they are unavailable. Appendix A
includes a list of all chemicals used in this research and company sources when available. All fungicides are
expressed as formulated rate per acre as suggested by the manufacturers.
The information presented in this report is neither an endorsement nor recommendation of the commercial
products used in these trials. Consent of the authors must be obtained to reprint or reproduce any of the summa-
ries.
NOTE: The information presented in this report is neither an endorsement nor recommendation of the commercial
products used in these trials. Consent of the authors must be obtained to reprint or reproduce any of the summa-
ries.
2 ALABAMA AGRICULTURAL EXPERIMENT 
STATION
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 3
Evaluation of Selected Experimental Seed Treatments
for Control of Seedling Disease of Cotton,
Tennessee Valley Research and Extension Center
Objective: To evaluate selected cotton seed treatments for control of Rhizoctonia solani and Pythium spp. for
seedling disease of cotton.
Location: Tennessee Valley Research and Extension Center, Belle Mina, AL
Cultivar: Stoneville 474
Planting:
Date: May 3, 1999
Experimental Design: Randomized complete block with four replications
Plot Design: Two-row plots, rows 25 feet long, 40 inches wide, blocks separated by 20-foot alley.
Seeding Rate: 125 seed per row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System.
Application of Treatments: LS 288 and RTU BaytanThiram + Allegiance were applied to a known amount
of seed in a ziploc bag and shaken until completely covered and then allowed to dry. All other fungicides were
applied to the seed by the manufacturer. All other seed treatments were applied to the seed by the manufacturer.
Each plot was infested with Pythium spp. and R. solani by applying inoculated millet seed in the furrow at
planting.
Planting Assessment: Stand counts were made on May 19 and June 2. Open bolls were counted on
September 10.
Harvest: Plants were harvested on September 28.
Results: Significant differences in seedling stand were observed at 16 and 30 days after planting. At two and
four weeks after planting, Vitavax-PCNB + Allegiance FL, WE- 120C + Nu-Flow M + WE-147 + Nu-Grow Film
Coat and RTU Baytan Thiram + Allegiance produced significantly greater stands than the untreated control
(Tables 1 and 2). Vitavax-PCNB + Allegiance FL and RTU Baytan Thiram + Allegiance also produced a signifi-
cantly lower skip index indicating a more uniform seedling stand than the untreated control. However, 30 days
after planting only Vitavax-PCNB + Allegiance FL produced a significantly lower skip index.
No significant differences were observed in the number of open bolls on five plants per plot (Table 3). Seed
cotton yields ranged from 2540 pounds per acre to 1094 pounds per acre for the Vitavax-PCNB + Allegiance FL
and the untreated control, respectively. Vitavax-PCNB + Allegiance FL, Maxim + Nu-Flow M + Apron XL, WE -
120C + Nu-Flow M + WE-147 + Nu-Grow Film Coat and RTU Baytan Thiram + Allegiance all produced signifi-
cantly greater yields than the control. Averaging all fungicide treatment yields together produced an increase of
606 pounds of seed cotton per acre greater than the untreated control.
4 ALABAMnAAGIUTRLEPRMNSAIO
TABLE 1. EEFcF OF SELECTED SEED TREATMENTS ON COTTON STAND, SIP INDEX, iAiNEPIAW VIGOR 16 DAYS
AFTERPLANTING, T rNu~ssE VALLEY RESEARCH AND ExEN~sioN CENTER, BELLE MiNA, AL, 1999
Treatment
Untreated Control
Vitavax-PCNB + Allegiance FL
TU Baytan-Thiram + Apron FL
U-Flow T + Nu-Flow M + Apron XL
Maxim + Nu-Flow M + Apron XL
WE-120C + Nu-Flow M + WE-147 +
Nu-Grow Film Coat
WE- 142 + WE- 147 + Nu-Grow Film Coat
LS 288
RTU Baytan Thiram + Allegiance
Rate Emergence
(fi oz/cwt) 
per l0ft ofrow
- 14.25 d
6.0 +0.75 46.25 a
3.0+0.75 23.75 bcd
2.25 + 1.25 + 0.32 25.25 bcd
0.08 +1.75 +0.32 26.0 bcd
0.24+ 1.25 +2.0 + 37.25 ab
2.0
2.0 + 2.0 +2.0
0.5 ozlcwt
3.0 + 0.75 ozlcwt
17.5cd
24.0 bcd
33.0 abc
LSD (0.05) 17.30 0.69 5.9 0.96
TABLE 2. EFFECT OF SELECITED SEED TREATMENTS ON COTTON SIM, SKIPINDE~X, AND PLANT VIGOR 30 DAYS
AFTER PLANTING, TEN sE VALLEY R.ESEARCH ANDI Exmr'iON CENTRm, BELLE MiNA, AL, 1999
Treatment Rate
(iozlcwt)
Untreated Control
Vitavax-PCNB + Allegiance FL
RTU Baytan-Thiram + Apron FL
NU-Flow T + Nu-Flow M + Apron XL
Maxim + Nu-Flow M + Apron XL
WE-120C + Nu-Flow M + WE-147 +
Nu-Grow Film Coat
WE- 142 +- WE- 147 + Nu-Grow Film Coat
6.0 + 0.75
3.0+0.75
2.25 +1.25 +0.32
0.08 + 1.75 +0.32
0.24+ 1.25 +2.0 +
2.0
2.0 +2.0 +2.0
Emergence
per l0 ft ofrow
9.75 c
3 1.00 a
18.75 abc
22.25 abc
19.25 abc
28.00 ab
15.00 bc
Plants Skip Vigor
per ft of row Index Rating
0.39 c 21.3 a 2.25 b
1.24a 14.8b 3.75 a
0.75 abc 18.3A 2.88A
0.89 abc 18.8A 3.3 8A
0.77 abc 20.0 A 3.25A
1.12 Ab 15.2A 3.3 8A
0.60Obc 19.0Oab 2.63 ab
20.25abc 0.81 abc 17.5ab 3.38ab
RTU Baytan Thiram + Allegiance 3.0 + 0.75 oz/cwt 25.25 ab
1.01ab 18.Oab 2.75ab
LSD (0.05) 14.34 0.57 6.0 
1.14
Plants
per ft of row
0.57 d
1.85 a
0.95 bcd
1.01 bcd
1.04 bcd
1.49 A
0.70Ocd
0.96 bcd
1.32 abc
Skip
Index
20.0 a
10.5Sc
16.2 abc
15.0 abc
16.8Sab
14.3 abc
15.8 abc
16.0 abc
13.8 bc
Vigor
Rating
3.0 a
3.62 a
3.25 a
2.88 a
3.38 a
3.50a
3.00a
3.50 a
3.38 a
LS288
0.5 ozlcwt
w
a
1I ~ ~~YY
4 ALABAMA AGRICULTURAL EXPERIMENT STATION
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 5
TABLE 3. EFFECT OF SELECTED SEED TREATMENTS ON COTTON MATURITY AND SEED COTTON YIELD,
TENNESSEE VALLEY RESEARCH AND EXTENSION CENTER, BELLE MINA, AL, 1999
Treatment Rate Open Bolls' Seed Cotton Yield
% lb/ac
Control 45 a 1094 d
Vitavax-PCNB + Allegiance FL 6.0 + 0.75 fl oz/cwt 56 a 2540 a
RTU Baytan-Thriam + Apron FL 3.0 + 0.75 fl oz/cwt 52 a 1656 bcd
NU-Flow T + Nu-Flow M + Apron XL 2.25 + 1.25 + 0.32 fl oz/cwt 40 a 1721 bcd
Maxim + Nu-Flow M + Apron XL 0.08 + 1.75 + 0.32 fl oz/cwt 48 a 1956 abc
WE-120C + Nu-Flow M + WE-147 + 0.24 + 1.25 + 2.0+ 55 a 2325 ab
Nu-Grow Film Coat 2.0 fl oz/cwt
WE1 142 + WE-147 +Nu-Grow Film Coat 2.0 + 2.0 + 2.0 fl oz/cwt 42 a 1450 cd
LS 288 0.5 oz/cwt 40 a 1440 cd
RTU Baytan Thiram + Allegiance 3.0 + 0.75 oz/cwt 43 a 1672 abc
LSD (0.05) 19 729
Number of open bolls on five plants divided by the total number of bolls.
Evaluation of Selected Seed Treatments for Control of Rhizoctonia
solani and Pythium spp. on Seedling Disease of Cotton,
Tennessee Valley Research and Extension Center
Objective: To evaluate selected cotton seed treatments for control of Rhizoctonia solani and Pythium spp. for
seedling disease of cotton.
Location: Tennessee Valley Research and Extension Center, Belle Mina, AL
Cultivar: Stoneville 474
Planting:
Date: May 3, 1999
Experimental Design: Randomized complete block with four replications
Plot Design: Two-row plots, rows 25 feet long, 40 inches wide, blocks separated by 20-foot alley.
Seeding Rate: 125 seed per row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System.
Application of Treatments: All seed treatments were applied by the manufacturer prior 
to planting. Each
plot was infested with Pythium spp. and R. solani by applying inoculated millet seed in the furrow at 
planting.
Planting Assessment: Stand counts were made on May 19 and June 2. Open bolls were counted 
on
September 10.
Harvest: Plants were harvested on September 28.
Results: Significant differences in seedling stand were observed. At 16 and 30 days after planting, 
Vitavax-
PCNB + Nu-Flow M, Nu-Flow T + Nu-Flow M +Apron XL ,Nu-Flow T + Nu-Flow M + WE 
147, WE 146 + WE 144
+ Nu-Flow T + Nu-Flow M + WE 147 + Nu-Gro Film Coat, and WE 146 + WE 144 
+ Nu-Grow Film Coat produced
significantly greater stands than the untreated control (Table 1). The highest skip index 
was in the control.
Vitavax-PCNB + Nu-Flow M had the lowest skip index, indicating that this treatment 
produced a more evenly
spaced seedling stand than the control.
Three of the fungicide seed treatments produced an increased percentage 
of open bolls, indicating earlier
maturity (Table 2). Seed cotton yields ranged from 2135.5 pounds per acre to 
858.8 pounds per acre for the
Vitavax-PCNB + Nu-Flow M and the untreated control, respectively. All seed treatments 
increased the seed cotton
yield compared to the control.
6 ALABAMA AGRICULTURAL EXPERIMENT STATION
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 7
TABLE 1. EFFECT OF SELECTED SEED TREATmENTS ON COTTON STAND, SEuP INDEX, AN PLANTr VIGOR 16 AND
30 DAYS AFTE PLANTING, TENNESSEE VALLEY R*ESEARCH AND EXTE~NSION CENTER, BELLE MINA, AL, 1999
Treatment Rate
fozlcwt
Untreated Control
Vitavax-PCNB + Nu-flow M
RTU Baytan-Thiram + Apron FL
NU-Flow T + Nu-Flow M + Apron XL
Nu-Flow T + Nu-Flow M +
WE 147
WE-146 + WE-144 + Nu-Flow T +
Nu-Flow M + WE-147 +
Nu-Grow Film Coat
WE-146 +WE- 144 +Nu-Grow Film Coat
pe
~~per
Black seed control
6.0 +0.75
3.0 +0.75
2.25 +1.25 +0.32
2.25 +1.25 +
2.0
0.0353 + 0.0353 + 2.25 +
1.25+ 2.0+
2.0
0.0353 +0.0353+2.0
mergence
10 ft of row
16DAP
7.3 c
28.0 a
14.Obc
21.5Sab
26.0 ab
25.5Sab
29-.5 a
Emergence Skip Vigor
per 25 ft of row Index Rating
30DAP 16DAP 3ODAP
14.0Oc 36.3 a 2.3 a
42.8 a 20.8 c 1.4 b
23.Obc 29.5Sab 1.8 abc
35.3 ab 24.8 bc 1.6 bc
3 3.8 ab 22.0Obc 1.5Sbc
3 7.5 ab 22.3 bc 3.50 a
40.8 23.3bc 3.00a
LSD (0.05) 13.2 16.1 7.8 0.96
TABLE 2. EFFECT OF SELECTED SEED TREATMENTS ON COTTON MATURITY AND SEED 
COTTON YIELD,
TENNESSEE VALLEY RESEARCH AND EXTENSION CENTER, BELLE MINA, AL, 1999
Treatment Rate Open Boils 
Seed Cotton Yield
fi oz/cwt %lb/ac
Untreated Control Black seed control 32.2 b 
858.8 b
Vitavax-PCNB + Nu-flow M 6.0 +0.75 46.5 ab 
2135.5 a
RTU Baytan-Thiram + Apron FL 3.0 +0.75 47.9 a 
1756.8 a
NU-Flow T + Nu-Flow M + Apron XL 2.25+1.25+0.32 47.4 ab 1809.1 a
Nu-Flow T + Nu-Flow M + WE 147 2.25 + 1.25 + 2.0 52.7 a 
1799.2 a
WE-146 + WE-144 + Nu-Flow T + 0.0353 + 0.0353 + 2.25 + 54.4 a 
2027.8 a
Nu-Flow M + WE-147 + 1.25 + +2.0 +
Nu-Grow Film Coat 2.0
WE- 146 + WE-144 +Nu-Grow Film Coat 0.0353 +0.0353 +2.0 42.1 ab 
2083.3 a
LSD (0.05) 
15.3 546.8
0
rJV U~i~~ ~P I~ I I~~ ILI~U I ~1'
8 ALABAMA AGRICULTURAL EXPERIMENT STATION
Evaluation of In-furrow Fungicide and Fungicide Biological
Combinations for Control of Rhizoctonia solani and Pythium spp.
on Seedling Disease of Cotton,
Wiregrass Research and Extension Center
Objective: To evaluate selected in-furrow fungicides for control of Rhizoctonia solani and Pythium spp.
seedling disease of cotton.
Location: Wiregrass Research and Extension Center, Headland, AL
Cultivar: NuCotton 35B
Planting:
Date: April 20, 1999
Experimental Design: Randomized complete block with five replications
Plot Design: Two-row plots, rows 25 feet long, 40 inches wide, blocks separated by 20-foot alley.
Seeding Rate: 125 seed per row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System.
Application of Treatments: All fungicides were applied as an in-furrow granular or spray application at
planting. All in-furrow sprays were applied with flat tip nozzles (8002E) calibrated to deliver 20 GPA at 30 PSI..
In-furrow granular fungicides were applied in the seed furrow utilizing a two row cone planter equipped with
granular chemical applicators.
Two seed treatments, LS 288 and RTU BaytanThiram + Allegiance were applied to a known amount of seed in
a ziploc bag and shaken until completely covered and then allowed to dry before planting. Each plot was infested
with Pythium spp. and R. solani by applying inoculated millet seed in the furrow at planting.
Planting Assessment: Stand counts were made on May 5 and May 18. Open bolls were counted on
September 16.
Harvest: Plants were harvested on September 29.
Results: Significant differences in seedling stand were observed at 15 and 28 days after planting. In the R.
solani inoculated rows, Terraclor 2E, Terraclor 15G, Rovral 4F, TSX EC, Ridomil Gold PC 11G, TSX 18,8 (7.0
pounds per acre) and TSX G/WGB49 (5.5 pounds per acre and 7.4 pounds per acre) produced greater stand and
lower skip indexes than the control at 15 and 28 days after planting (Tables 1 and 2). In the Pythium spp. inocu-
lated rows, Terraclor 15G, Rovral 4F, TSX EC, TSX 18,8 (7.0 pounds per acre) and TSX G/WGB49 (5.5 pounds per
acre and 7.4 pounds per acre) produced greater stand and lower skip indexes than the control at 15 days after
planting (Table 3). However, by 28 days after planting, only TSX EC and TSX G/WGB (7.4 pounds per acre)
produced greater stand and lower skip indexes than the control (Table 4).
The inoculated rows were combined for yields. TSX EC produced a significantly higher percentage of open
bolls than the control, indicating earlier maturity (Table 5). Seed cotton yields ranged from 2474 pounds per acre
to 1951 pounds per acre for the TSX G/WGB (7.4 pounds per acre) and Terraclor 2EC treatments, respectively
(Table 5). The average fungicide yield compared to the control increased the seed cotton 182 pounds per acre.
TABLE 1. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON R. SOLANI COTTON SEEDLING DISEASE
AS MEASURED BY COTTON STAND, SKIP INDEX, AND PLANT VIGOR AT 15 DAYS AFTER PLANTING,
WIREGRASS RESEARCH AND EXTENSION CENTER, HEADLAND, AL, 1999
Treatment Rate Emergence Plants Skip Vigor
(formulated product) per 25 ft of row per ft of row Index Rating
Untreated Control 22.0 e 0.88 
d 30.6 a 2.0 c
Terraclor 2E 48 fl oz 55.8 d 2.23 c 16.6 cd 
2.7 ab
Terraclor 15G 5.5 lb 74.4 bed 2.98 abc 
10.2 de 2.8 ab
Rovral 4F 5.2 fl oz 96.2 a 3.71 
a 8.6 e 2.9 ab
TSX 18.8G 5.5 lb 28.4 e 1.14 
d 29.4 ab 2.0 c
TSX EC 64 oz 93.4 
ab 3.74 a 8.6 e 3.0 a
Ridomil Gold PC 11G 7.0 lb 
85.6 abc 3.42 ab 10.2 de 2.8 ab
TSX 18.8G 7.0 lb 88.2 abc 
3.53 ab 6.6 e 2.9 ab
TSX G/WGB49 7.4 lb 86.2 abc 
3.45 ab 11.0 de 2.7 ab
TSX G/WGB49 5.5 lb 
71.2 cd 3.85 bc 12.6 de 2.9 ab
RTU Baytan Thiram + Allegiance 3.0 + 0.75 oz /cwt 26.2 
e 1.05 d 31.8 a 2.5 b
LSD (0.05) 
20.58 0.82 7.28 0.47
TABLE 2. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON R. 
SOLANI COTTON SEEDLING DISEASE
AS MEASURED BY COTTON STAND AND SKIP INDEX AT 28 DAYS 
AFTER PLANTING,
WIREGRASS RESEARCH AND EXTENSION CENTER, HEADLAND, AL, 1999
Treatment Rate Emergence 
Plants Skip
per ft ofrow Index
Untreated Control 15.0 
d 0.60 d 31.4 a
Terraclor 2E 48 fl oz 
39.4 c 1.58 c 16.2 b
Terraclor 15G 5.5 lb 65.4 
ab 2.62 ab 8.2 cd
Rovral 4F 5.2 fl oz 84.0 
a 3.36 a 9.0 bed
TSX 18.8G 5.5 lb 15.8 
d 0.63 d 30.2 a
TSXEC 64 oz 
74.8 ab 2.99 ab 7.8 cd
Ridomil Gold PC 11G 7.0 lb 72.8 
ab 2.91 ab 12.2 bed
TSX 18.8G 7.0 lb 77.4 a 3.09 a 6.6 d
TSX G/WGB49 7.4 lb 77.0 a 
3.08 a 7.8 cd
TSX G/WGB49 5.5 lb 58.2 b 
2.33 b 14.2 bc
RTU Baytan Thiram + Allegiance 3.0 +0.75 oz/cwt 
18.8 d 0.75 d 32.2 a
LSD (0.05) 18.75 
0.75 7.33
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 9
TABLE 3. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON PYTHIUM SPP. COTTON SEEDLING DISEASE
AS MEASURED BY COTTON STAND, SKIP INDEX, AND PLANT VIGOR AT 15 DAYS AFTER PLANTING,
WIREGRASS RESEARCH AND EXTENSION CENTER, HEADLAND, AL, 1999
Treatment Rate Emergence Plants Skip Vigor
(formulated product) per ft of row Index Rating
Untreated Control - 55.4 ef 2.22 ef 11.8 a 2.8 abc
Terraclor 2E 48 fl oz 64.2 def 2.57 def 8.4 abc 3.0 abc
Terraclor 15G 5.5 lb 78.8 a-d 3.15 a-d 5.0 bc 3.1 ab
Rovral 4F 5.2 fl oz 78.4 a-d 3.14 a-d 2.2 c 3.2 a
TSX 18.8G 5.5 lb 54.2 f 2.17 f 12.2 a 2.8 abc
TSX EC 64 oz 87.4 ab 3.50 ab 6.2 abc 2.9 abc
Ridomil Gold PC 11G 7.0 lb 73.2 a-e 2.93 a-e 7.0 abc 2.1 d
TSX 18.8G 7.0 lb 78.2 a-d 3.13 a-d 7.6 abc 2.6 bcd
TSX G/WGB49 7.4 lb 88.8 a 3.55 a 4.6 bc 2.7 abc
TSX G/WGB49 5.5 lb 83.4 abc 3.34 abc 8.2 abc 2.8 abc
RTU Baytan Thiram + Allegiance 3.0 + 0.75 oz /cwt 66.4 c-f 2.66 c-f 6.6 abc 2.8abc
LSD (0.05) 18.22 0.73 6.31 0.50
TABLE 4. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON PYTHIUM SPP. COTTON SEEDLING DISEASE
AS MEASURED BY COTTON STAND AND SKIP INDEX AT 28 DAYS AFTER PLANTING,
WIREGRASS RESEARCH AND EXTENSION CENTER, HEADLAND, AL, 1999
Treatment Rate Emergence Plants Skip
per ft of row Index
Untreated Control - 54.0 cd 2.16 cd 11.0 ab
Terraclor 2E 48 fl oz 59.0 bcd 2.36 bed 10.2 ab
Terraclor 15G 5.5 lb 56.0 cd 2.24 cd 11.4 ab
Rovral 4F 5.2 fl oz 68.8 abc 2.75 abe 5.4 b
TSX 18.8G 5.5 lb 45.4 d 1.82 d 15.4 a
TSX EC 64 oz 76.6 ab 3.06 ab 4.6 b
Ridomil Gold PC 11G 7.0 lb 61.8 bed 3.47 bed 8.2 ab
TSX 18.8G 7.0 lb 67.6 abc 2.70 abc 10.6 ab
TSX G/WGB49 7.4 lb 84.2 a 3.37 a 5.4 b
TSX G/WGB49 5.5 lb 71.8 abc 2.87 abc 9.2 ab
RTU Baytan Thiram + Allegiance 3.0 + 0.75 oz/cwt 55.2 cd 2.21 cd 10.6 ab
LSD (0.05) 18.74 0.75 7.69
10 ALABAMA AGRICULTURAL EXPERIMENT STATION
TABLE 5. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON COTTON MATURITY AND SEED COTTON YIELD,
WIREGRASS RESEARCH AND EXTENSION CENTER, HEADLAND, AL, 1999
Treatment Rate Open Bolls Seed Cotton Yield
% lb/ac
Untreated Control 49.44 2091ab
Terraclor 2E 48 fl oz 59.82 1951 b
Terraclor 15G 5.5 lb 48.49 2300 ab
Rovral 4F 5.2 fl oz 59.60 2277 ab
TSX 18.8G 5.5 lb 55.41 2056 ab
TSX EC 64oz 62.66 2114 ab
Ridomil Gold PC 11G 7.0 lb 58.78 2335 ab
TSX 18.8G 7.0 lb 54.08 2323 ab
TSX G/WGB49 7.4 lb 53.61 2474 a
TSX G/WGB49 5.5 lb 56.72 2300 ab
RTU Baytan Thiram +Allegiance 3.0 + 0.75 oz/cwt 5529 2207 ab
LSD (0.05) 11.15 431.96
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 11
Evaluation of In-furrow Fungicide and Fungicide Biological
Combinations for Control of Rhizoctonia solani and Pythium spp.
on Seedling Disease of Cotton,
Tennessee Valley Research and Extension Center
Objective: To evaluate selected in-furrow fungicides for control of Rhizoctonia solani and Pythium 
spp.
seedling disease of cotton.
Location: Tennessee Valley Research and Extension Center, Belle Mina, AL
Cultivar: NuCotton 35B
Planting:
Date: April 20, 1999
Experimental Design: Randomized complete block with five replications
Plot Design: Two-row plots, rows 25 feet long, 40 inches wide, blocks 
separated by 20-foot alley.
Seeding Rate: 125 seed per row.
Cultural Practices: All plots were maintained throughout the season with standard 
herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative 
Extension System.
Application of Treatments: All fungicides were applied as an in-furrow 
granular or spray application at
planting. All in-furrow sprays were applied with flat tip nozzles (8002E) calibrated 
to deliver 20 GPA at 30 PSI. In-
furrow granular fungicides were applied in the seed furrow utilizing a two row cone planter 
equipped with
granular chemical applicators. Each plot was infested with Pythium spp. and R. solani 
by applying inoculated
millet seed in the furrow at planting.
Planting Assessment: Stand counts were made on May 12 and May 25. 
Open bolls were counted on
September 10.
Harvest: Plants were harvested on September 28.
Results: At 22 and 35 days after planting all fungicide treatments had significantly greater 
stands than the
control (Table 1). At 22 days after planting, Terraclor Super X G/WGB49 at 7.4 pounds 
per acre produced the
greatest stand at 3.6 plant per foot of row and the control produced the lowest with 
0.4 plant per foot of row. All
fungicides produced lower skip indexes than 
the control.
No differences in maturity were observed as measured by the percent open bolls (Table 2). Seed cotton yields
ranged from 3350.3 pounds per acre to 2122.5 pounds per acre for the Terraclor 
Super X G/WGB49 at 7.4 pounds
per acre and the control treatments, respectively (Table 2). All fungicide treatments 
produced significantly greater
yields than the control.
12 ALABAMA AGRICULTURAL EXPERIMENT STATION
TABLE 1. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON COTTON SEEDLING DISEASE AS MEASURED
BY COTTON STAND, SKIP INDEX, AND PLANT VIGOR AT 22 AND 35 DAYS AFTER PLANTING,
TENNESSEE VALLEY RESEARCH AND EXTENSION CENTER, BELLE MINA, AL, 1999
Treatment Rate Emergence Emergence Skip Vigor
fl oz/cwt per 10 ft of row per 25 ft ofrow Index Rating
22 DAP 35 DAP 22 DAP 35 DAP
Untreated Control - 4.0 d 11.8 d 33.0 a 3.1 a
Terraclor Super X 18.8 G 7.0 lb/ac 28.3 ab 63.3 ab 7.3 c 1.9 b
Terraclor Super X 18.8 G 5.5 lb/ac 27.5 ab 67.5 ab 4.8 c 1.7 b
Terraclor Super X G/ WGB 49 5.5 lb/ac 35.0 ab 66.3 ab 3.5 c 1.6 b
Terraclor Super X G/WGB 49 7.4 lb/ac 36.0 a 75.3 a 2.8 c 
1.8 b
Terraclor Super X EC 64 oz/ac 26.3 ab 61.8 b 4.8 c 
1.6 b
Ridomil Gold PC 11G 7.0 lb/ac 25.8 b 61.5 b 5.3 c 2.1 b
Rovral 5.3 oz/ac 15.8c 30.8 c 19.3 b 2.1 b
LSD (0.05) 9.1 11.8 4.2 0.7
TABLE 2. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON COTTON MATURITY AND SEED COTTON YIELD,
TENNESSEE VALLEY RESEARCH AND EXTENSION CENTER, BELLE MINA, AL, 1999
Treatment Rate Open Bolls Seed Cotton Yield
% lb/ac
Untreated Control 46.9 a 2122.5 b
Terraclor Super X 18.8 G 7.0 lb/ac 51.1 a 3281.7 a
Terraclor Super X 18.8 G 5.5 lb/ac 53.2 a 3089.0 a
Terraclor Super X G/ WGB 49 5.5 lb/ac 57.5 a 3131.5 a
Terraclor Super X G/WGB 49 7.4 lb/ac 53.5 a 3350.3 a
Terraclor Super X EC 64 oz/ac 55.9 a 3193.5 a
Ridomil Gold PC 11G 7.0 lb/ac 56.8 a 3242.5 a
Rovral 5.3 oz/ac 51.8 a 3000.9 a
LSD (0.05) 16.9 395.4
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 13
Evaluation of In-furrow Fungicide and Fungicide Biological
Combinations for Control of Rhizoctonia solani and Pythium spp.
on Seedling Disease of Cotton,
Prattville Experiment Field
Objective: To evaluate selected in-furrow fungicides for control of Rhizoctonia solani and Pythium spp.
seedling disease of cotton.
Location: Prattville Experiment Field, Prattville, AL
Cultivar: DPL 436RR
Planting:
Date: April 14, 1999
Experimental Design: Randomized complete block with five replications.
Plot Design: Two-row plots, rows 25 feet long, 40 inches wide, blocks separated by 20-foot alley.
Seeding Rate: 125 seed per row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System.
Application of Treatments: All fungicides were applied as an in-furrow granular or spray application at
planting. All in-furrow sprays were applied with flat tip nozzles (8002E) calibrated to deliver 20 GPA at 30 PSI. In-
furrow granular fungicides were applied utilizing a two row cone planter equipped with granular chemical
applicators. Each plot was infested with Pythium spp. and R. solani by applying inoculated millet seed in the
furrow at planting.
Planting Assessment: Stand counts were made on May 4 and May 18. Open bolls were counted on
September 9.
Harvest: Plants were harvested on September 28.
Results: Significant differences in seedling stand were observed. At 20 days after planting, Terraclor 15G and
Rovral 4F had a significantly greater stand than Terraclor 2E (Table 1). However, by 34 days after planting no
significant differences in stand were observed among any treatments. Ridomil Gold PC 
11G had the most uniform
stand with a skip index of 11.5.
No differences in maturity were observed as measured by the percent open 
bolls (Table 2). Seed cotton yields
ranged from 3259.7 pounds per acre to 22214.3 pounds per acre for the Ridomil Gold PC 11 G and Terraclor 2E
treatments, respectively (Table 2). There were no significant differences in yields among the treatments including
the control.
14 ALABAMA AGRICULTURAL EXPERIMENT STATION
TABLE 1. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON COTTON SEEDLING DISEASE AS MEASURED
BY COTTON STAND, SKIP INDEX, AND PLANT VIGOR AT 20 AND 34 DAYS AFTER PLANTING,
PRATTVILLE EXPERIMENT FIELD, PRATTVILLE, AL, 1999
Treatment Rate Emergence Emergence Skip Vigor
fl oz/cwt per 10 ft of row per 10 ft ofrow Index Rating
20 DAP 34 DAP 34 DAP 34DAP
Untreated Control 4.8 ab 7.5 a 20.3 c 1.8 b
Terraclor Super X 18.8 G 7.0 lb/ac 7.0 ab 8.0 a 21.5 c 1.9 b
Terraclor Super X 18.8 G 5.5 lb/ac 8.3 ab 9.5 a 20.0 c 1.9 b
Terraclor Super X G/ WGB 49 7.4 lb/ac 5.3 ab 6.3 a 30.0 ab 1.9 b
Terraclor Super X G/WGB 49 5.5 lb/ac 7.0 ab 9.0 a 22.3 bc 2.0 ab
Terraclor Super X EC 64 oz/ac 6.3 ab 8.0 a 17.8 cd 1.8 b
Ridomil Gold PC 11G 7.0 lb/ac 6.0 ab 9.5 a 11.5 d 1.5 b
Rovral 4F 5.3 oz/ac 8.5 a 9.3 a 24.3 abc 1.9 b
Terraclor 2E 48 fl oz/ac 3.0 b 4.0 a 32.0 a 2.5 a
Terraclor 15G 5 lb/ac 10.0 a 9.0 a 22.3 
bc 1.7 b
LSD (0.05) 5.4 5.6 8.4 0.5
TABLE 2. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON COTTON MATURITY AND SEED 
COTTON YIELD,
PRATTVILLE EXPERIMENT FIELD, PRATTVILLE, AL, 1999
Treatment Rate Open Bolls Seed Cotton Yield
% lb/ac
Untreated Control 63.5 a 2954.8 abc
Terraclor Super X 18.8 G 7.0 lb/ac 62.6 a 2860.4 abc
Terraclor Super X 18.8 G 5.5 lb/ac 61.4 a 
2889.5 abc
Terraclor Super X G/ WGB 49 7.4 lb/ac 55.2 a 2541.0 cd
Terraclor Super X G/WGB 49 5.5 lb/ac 62.5 a 2679.0 bc
Terraclor Super X EC 64 oz/ac 54.6 a 3012.9 ab
Ridomil Gold PC 11iG 7.0 lb/ac 55.0 a 3259.7 a
Rovral 4F 5.3 oz/ac 56.3 a 
2962.1 abc
Terraclor 2E 48 fl oz/ac 55.9 a 2214.3 d
Terraclor 15G 5 lb/ac 55.5 a 3071.0 ab
LSD (0.05) 12.2 434.3
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 15
Evaluation of Terraclor and Rovral Fungicide Treatments for Control
of Rhizoctonia solani and Pythium spp. on Seedling Disease of Cotton,
Tennessee Valley Research and Extension Center
Objective: To evaluate selected in-furrow fungicide sprays for control of Rhizoctonia solani and Pythium spp.
seedling disease of cotton.
Location: Tennessee Valley Research and Extension Center, Belle Mina, AL
Cultivar: DPL33B
Planting:
Date: April 21, 1999
Experimental Design: Randomized complete block with five replications
Plot Design: Two-row plots, rows 25 feet long, 40 inches wide, blocks separated by 20-foot alley.
Seeding Rate: 125 seed per row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System.
Application of Treatments: All fungicides were applied as an in-furrow spray application at planting. All
in-furrow sprays were applied with flat tip nozzles (8002E) calibrated to deliver 20 GPA at 30 PSI. Each plot was
infested with Pythium spp. and R. solani by applying inoculated millet seed in the furrow at planting.
Planting Assessment: Stand counts were made on May 12 and May 25. Open bolls were counted on
September 10.
Harvest: Plants were harvested on September 28.
Results: At 21 and 34 days after planting, all fungicide treatments produced significantly greater stands than
the control (Table 1). Terraclor 15G produced the greatest stand at 2.38 plant per foot of row and the control
produced the lowest with 0.25 plant per foot of row at 35 days after planting, respectively. All fungicides produced
lower skip indexes than the control.
No differences in maturity were observed as measured by the percent open bolls (Table 2). Seed cotton yields
ranged from 3627.9 pounds per acre to 2044.1 pounds per acre for the Terraclor 15G and the control treatments,
respectively (Table 2). All fungicide treatments produced significantly greater yields than the control.
16 ALABAMA AGRICULTURAL EXPERIMENT STATION
TABLE 1. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON COTTON SEEDLING DISEASE AS MEASURED
BY COTTON STAND, SKIP INDEX, AND PLANT VIGOR AT 21 AND 34 DAYS AFTER PLANTING,
TENNESSEE VALLEY RESEARCH AND EXTENSION CENTER, BELLE MINA, AL, 1999
Treatment Rate Emergence Emergence Skip Vigor
fl oz/cwt per 10 ft of row per 10 ft ofrow Index Rating
21 DAP 34 DAP 21 DAP 34DAP
Untreated Control - 3.5 b 6.3 c 37.0 a 3.3 a
Terraclor 2E 48 fl oz/ac 21.5 a 52.3 ab 9.0 bc 1.9 b
Terraclor 15G 5 lb/ac 27.5 a 59.5 a 5.3 c 1.9 b
Rovral 4F 5.2 oz/ac 23.0 a 38.5 b 13.0 b 1.6 b
LSD (0.05) 16.4 17.8 6.9 0.6
TABLE 2. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON COTTON MATURITY AND SEED COTTON YIELD,
TENNESSEE VALLEY RESEARCH AND EXTENSION CENTER, BELLE MINA, AL, 1999
Treatment Rate Open Bolls Seed Cotton Yield
% lb/ac
Untreated Control 47.3 a 2044.1 b
Terraclor 2E 48 fl oz/ac 59.6 a 3425.4 a
Terraclor 15G 5 lb/ac 64.1 a 3627.9 a
Rovral 4F 5.2 lb/ac 58.7 a 3236.0 a
LSD (0.05) 15.4 534.4
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 17
Evaluation of Quadris for Control of Seedling Disease of Cotton,
Wiregrass Research and Extension Center
Objective: To evaluate Quadris as an in-furrow fungicide spray and seed treatment for control of seedling
disease of cotton.
Location: Wiregrass Research and Extension Center, Headland, AL
Cultivar: NuCotton 35B
Planting:
Date: April 23, 1999
Experimental Design: Randomized complete block with five replications
Plot Design: Two-row plots, rows 25 feet long, 40 inches wide, blocks separated by 20-foot alley.
Seeding Rate: 125 seed per row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System.
Application of Treatments: All fungicides were either applied to the seed as a seed treatment before
planting or as an in-furrow spray application at planting. All in-furrow sprays were applied with flat tip nozzles
(8002E) calibrated to deliver 20 GPA at 30 PSI. Each plot was infested with Pythium spp. and R. solani by
applying inoculated millet seed in the furrow at planting.
Planting Assessment: Stand counts were made on May 13 and May 27. Open bolls were counted on
September 16.
Harvest: Plants were harvested on September 29.
Results: Significant differences in seedling stand were observed at 20 and 34 days after planting. At 20 days
after planting, Quadris, Terraclor, Ridomil + Terraclor and the Protege + Allegiance + Quadris treatments produced
significantly greater stands than the black seed control and the Protege + Allegiance + Ascend seed treatment
(Table 1). By 34 days after planting, the Quadris in-furrow sprays produced a significantly greater stand than the
Protege + Allegiance + Quadris seed treatment (Table 1). The skip index rating at 20 days after planting, found all
Quadris, Terraclor, Ridomil + Terraclor, and Protege + Allegiance + Quadris treatments produced significantly more
uniform stands than the black seed control and the Protege + Allegiance + Ascend seed treatment (Table 1).
No differences in the percent of open bolls were observed (Table 2). Seed cotton yields ranged from 1858.6
pounds per acre to 1488.3 pounds per acre for the Protege + Allegiance + Ascend and the Protege + Allegiance +
Quadris treatments, respectively (Table 2). There were no significant differences in yield among treatments
including the control.
18 ALABAMA AGRICULTURAL EXPERIMENT STATION
TABLE 1. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON COTTON SEEDLING DISEASE AS MEASURED
BY COTTON STAND, SKIP INDEX, AND PLANT VIGOR AT 20 AND 34 DAYS AFTER PLANTING,
WIREGRASS RESEARCH AND EXTENSION CENTER, HEADLAND, AL, 1999
Treatment Rate Emergence Emergence Skip Vigor
fl oz/cwt per 10 ft ofrow per 25 ft of row Index Rating
20 DAP 34 DAP 20DAP 34DAP
Untreated Control-black seed 11.0 b 23.0 c 24.5 a 2.6 a
Quadris 5.56 fl oz/ac 36.3 a 73.3 a 3.0 b 1.7 b
Quadris 8.35 fl oz/ac 36.0 a 73.5 a 1.8 b 1.7 b
Terraclor 7.4 fl oz/1000 ft 38.8 a 69.0 ab 2.0 b 2.2 ab
Ridomil + 0.75 oz/1000 ft + 30.0 a 59.5 b 4.8 
b 1.8 ab
Terraclor 7.4 fl oz/1000 ft
Protege + Allegiance + Ascend 40 ppm + 15.5 b 28.8 c 18.5 a 
2.2 a
(Seed treatment) 0.75 fl oz/cwt
Protege + Allegiance + Quadris 40 ppm + 33.3 a 56.8 b 
5.0 b 1.8 ab
(Seed treatment) 0.75 fl oz/cwt
LSD (0.05) 12.6 
12.9 9.2 0.8
TABLE 2. EFFECT OF SELECTED IN-FURROW FUNGICIDES ON COTTON MATURITY AND SEED COTTON YIELD,
WIREGRASS RESEARCH AND EXTENSION CENTER, HEADLAND, AL, 1999
Treatment Rate Open Bolls Seed 
Cotton Yield
% lb/ac
Untreated Control-black seed - 54.3 
a 1640.8 a
Quadris 5.56 fl oz/ac 56.8 a 1844.0 
a
Quadris 8.35 fl oz/ac 50.5 a 
1611.7 a
Terraclor 7.4 fl oz/1000 ft 54.2 a 
1786.0 a
Ridomil+ 0.75 oz/1000 ft+ 52.8 a 
1539.1 a
Terraclor 7.4 fl oz/1000 ft
Protege + Allegiance + Ascend 40 ppm + 62.0 a 
1858.6 a
(Seed treatment) 0.75 fl oz/cwt
Protege + Allegiance + Ascend 40 ppm + 46.9 a 
1488.3 a
(Seed treatment) 0.75 fl oz/cwt
LSD (0.05) 18.9 585.3
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 19
Evaluation of Quadris for Control of Seedling Disease of Cotton,
Prattville Experiment Field
Objective: To evaluate Quadris as an in-furrow fungicide spray and seed treatment for control of seedling
disease of cotton.
Location: Prattville Experiment Field, Prattville, AL
Cultivar: DPL 436 RR
Planting:
Date: April 14, 1999
Experimental Design: Randomized complete block with five replications
Plot Design: Two-row plots, rows 25 feet long, 40 inches wide, blocks separated by 20-foot alley.
Seeding Rate: 125 seed per row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System.
Application of Treatments: All fungicides were either applied to the seed as a seed treatment before
planting or as an in-furrow spray application at planting. All in-furrow sprays were applied with flat tip nozzles
(8002E) calibrated to deliver 20 GPA at 30 PSI. Each plot was infested with Pythium spp. and R. solani by
applying inoculated millet seed in the furrow at planting.
Planting Assessment: Stand counts were made on May 4 and May 18. Open bolls were counted on
September 9.
Harvest: Plants were harvested on September 28.
Results: Significant differences in seedling stand were observed at 20 and 34 days after planting. At 20 days
after planting, Quadris at 5.56 fluid ounces per acre produced a significantly greater stand than the black seed
control and Quadris at 8.35 fluid ounces per acre (Table 1). By 34 days after planting Quadris at 5.56 fluid ounces
per acre and Ridomil + Terraclor produced a significantly greater stand than all other treatments (Table 1). The
skip index rating at 20 days after planting found Quadris at 5.56 fluid ounces per acre, Terraclor, Ridomil +
Terraclor, Protege + Allegiance + Ascend, and Protege + Allegiance + Quadris treatments produced significantly
more uniform stands than the black seed control and Quadris at 8.35 fluid ounces per acre (Table 1).
No differences in the percent of open bolls were observed between fungicide treatments and the control
(Table 2). Seed cotton yields ranged from 3659.1 pounds per acre to 1248.7 pounds per acre for the Quadris at
5.56 fluid ounces per acre and the untreated black seed control treatments, respectively (Table 2). All fungicide
treatments produced significantly greater yields than the black seed control and the Protege + Allegiance +
Ascend seed treatment.
20 ALABAMA AGRICULTURAL EXPERIMENT STATION
TABLE 1. EFFECT OF QUADRIS ON COTTON SEEDLING DISEASE AS MEASURED BY COTTON STAND,
SKIP INDEX, AND PLANT VIGOR AT 20 AND 34 DAYS AFTER PLANTING,
PRATTVILLE EXPERIMENT FIELD, PRATTVILLE, AL, 1999
Treatment Rate Emergence Emergence Skip Vigor
fl oz/cwt per 10 ft ofrow per 25 ft ofrow Index Rating
20 DAP 34DAP 20DAP 34DAP
Untreated Control-black seed 5.0 b 4.0 c 35.3 a 2.8 a
Quadris 5.56 fl oz/ac 11.5 a 16.0 a 6.5 b 1.6 b
Quadris 8.35 fl oz/ac 6.0 b 4.0 c 28.0 a 2.1 ab
Terraclor 2E 7.4 fl oz/1000 ft 7.3 ab 9.5 b 16.3 b 1.9 b
Ridomil + 0.75 oz/1000 ft + 8.3 ab 15.8 a 6.3 b 
1.5 b
Terraclor 7.4 fl oz/1000 ft
Protege + Allegiance + Ascend 40 ppm + 7.0 ab 9.0 bc 12.8 
b 1.9 b
(Seed treatment) 
0.75 fl oz/cwt
Protege + Allegiance + Quadris 40 ppm + 8.0 ab 11.0 ab 10.0 b 1.8 b
(Seed treatment) 0.75 fl oz/cwt
LSD (0.05) 4.6 5.5 10.9 
0.8
TABLE 2. EFFECT OF QUADRIS ON COTTON MATURITY AND SEED COTTON YIELD,
PRATTVILLE EXPERIMENT FIELD, PRATTVILLE, AL, 1999
Treatment Rate Open Bolls Seed 
Cotton Yield
% lb/ac
Untreated Control-black seed - 54.1 ab 
1248.7 e
Quadris 5.56 fl oz/ac 51.2 b 
3659.1 a
Quadris 8.35 fl oz/ac 50.4 b 
2780.6 cd
Terraclor 7.4 fl oz/1000 ft 55.2 ab 3121.8 
bc
Ridomil + 0.75 oz/1000 ft + 58.6 ab 
3317.8 ab
Terraclor 7.4 fl oz/1000 ft
Protege + Allegiance + Ascend 40 ppm + 56.6 ab 2606.4 
d
(Seed treatment) 0.75 fl oz/cwt
Protege + Allegiance + Quadris 40 ppm + 63.4 a 3230.7 abc
(Seed treatment) 0.75 fl oz/cwt
LSD (0.05) 12.8 
462.0
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 21
22 ALABAMAAGIUTRLEPRMNSAIO
Evaluation of Quadris for Control of Seedling Disease of Cotton,
Tennessee Valley Research and Extension Center
Objective: To evaluate Quadris as an in-furrow fungicide spray and seed treatment for control of seedling
disease of cotton.
Location: Tennessee Valley Research and Extension Center, Belle Mina, AL
Cultivar: DPL 436 RR
Planting:
Date: April 21, 1999
Experimental Design: Randomized complete block with five replications
Plot Design: Two-row plots, rows 25 feet long, 40 inches wide, blocks separated by 20-foot alley.
Seeding Rate: 125 seed per row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System.
Application of Treatments: All fungicides were either applied to the seed as a seed treatment before
planting or as an in-furrow spray application at planting. All in-furrow sprays were applied with flat tip nozzles
(8002E) calibrated to deliver 20 GPA at 30 PSI. Each plot was infested with Pythium spp. and R. solani by
applying inoculated millet seed in the furrow at planting.
Planting Assessment: Stand counts were made on May 12 and May 26. Open bolls were counted on
September 10.
Harvest: Plants were harvested on September 28.
Results: Significant differences in seedling stand were observed at 21 and 35 days after planting. At 21 days
after planting, all Quadris treatments produced a significantly greater stand than the black seed control and
Protege + Allegiance + Ascend seed treatment (Table 1). By 35 days after planting Quadris at 8.35 fluid ounces per
acre and Protege + Allegiance + Quadris produced a significantly greater stand than all other treatments (Table 1).
All fungicide treatments did produce a significantly greater stand than the control.The skip index rating at 21
days after planting found all fungicide treatments produced significantly more uniform stands 
than the black seed
control and the Protege + Allegiance + Ascend seed treatment (Table 1).
No differences in the percent of open bolls were observed between any treatments (Table 2). Seed 
cotton
yields ranged from 3262.1 pounds per acre to 1459.6 pounds per acre for the Protege + Allegiance + Quadris and
the untreated black seed control treatments, respectively (Table 2). All fungicide treatments produced significantly
greater yields than the black seed control.
22
ALABAMA AGRICULTURAL EXPERIMENT STATION
TABLE 1. EFFECT OF QUADRIS ON COTTON SEEDLING DISEASE AS MEASURED BY COTTON STAND,
SKIP INDEX, AND PLANT VIGOR AT 21 AND 35 DAYS AFTER PLANTING,
TENNESSEE VALLEY RESEARCH AND EXTENSION CENTER, BELLE MINA, AL, 1999
Treatment Rate Emergence Emergence Skip 
Vigor
fl oz/cwt per 10 ft ofrow per 25 ft ofrow Index Rating
21 DAP 35 DAP 21 DAP 34DAP
Untreated Control-black seed - 5.3 d 8.5 e 37.3 a 3.1 
a
Quadris 5.56 fl oz/ac 20.3 ab 43.8 b 
8.5 de 1.8 d
Quadris 8.35 fl oz/ac 27.5 a 53.5 a 8.5 de 
1.8 d
Terraclor 7.4 fl oz/1000 ft 13.5 bc 40.8 b 12.5 cde 2.2 
bed
Ridomil + 0.75 oz/1000 ft + 18.0 b 39.5 b 
11.3 de 2.3 bcd
Terraclor 7.4 fl oz/1000 ft
Protege + Allegiance + Ascend 40 ppm + 8.5 cd 
20.0 d 27.5 b 2.8 ab
(Seed treatment) 0.75 fl oz/cwt
Protege + Allegiance + Quadris 40 ppm + 20.8 ab 55.8 a 
7.8 e 1.9 cd
(Seed treatment) 0.75 fl oz/cwt
Ridomil Gold 0.040 lb ai/ac 14.5 bc 
26.5 cd 18.0 c 2.6 abc
Ridomil Gold + 0.40 lb ai/ac + 16.0 bc 
29.5 c 14.0 cd 2.3 bed
Flint 0.125 lb ai/ac
LSD (0.05) 7.8 
9.3 5.9 0.7
TABLE 2. EFFECT OF QUADRIS ON COTTON MATURITY AND SEED COTTON 
YIELD,
TENNESSEE VALLEY RESEARCH AND EXTENSION CENTER, BELLE MINA, AL, 
1999
Treatment Rate Open Bolls 
Seed Cotton Yield
% lb/ac
Untreated Control-black seed - 50.9 
a 1459.6 d
Quadris 5.56 fl oz/ac 58.5 a 
3062.9 a
Quadris 8.35 fl oz/ac 56.2 
a 3164.1 a
Terraclor 7.4 fl oz/1000 ft 49.1 
a 2997.6 ab
Ridomil + 0.75 oz/1000 ft+ 
49.4 a 3040.1 ab
Terraclor 7.4 fl oz/1000 ft
Protege + Allegiance + Ascend 40 ppm + 56.3 a 
2566.6 c
(Seed treatment) 0.75 fl oz/cwt
Protege + Allegiance + Quadris 40 ppm + 63.8 a 3262.1 
a
(Seed treatment) 0.75 fl oz/cwt
Ridomil Gold 0.040 lb ailac 5538 a 
2703.7 bc
Ridomil Gold + 0.40 lb ai/ac + 53.7 a 
2759.2 bc
Flint 0.125 lb ailac
LSD (0.05) 16.8 
382.4
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 23
24 ALABAMAAGIUTRLEPRMNSAIO
Evaluation of Selected Fungicides for Control
of Cotton Boll Rot Disease,
Gulf Coast Research and Extension Center
Objective: To determine effects of selected fungicides on cotton boll rot and yield, by conducting a cotton
boll rot fungicide test.
Location: Gulf Coast Research and Extension Center, Fairhope, AL
Cultivar: DPL 33B
Planting:
Date: May 19, 1999
Experimental Design: Randomized complete block with five replications.
Plot Design: Two-row plots, rows 40 feet long, 38 inches wide row spacing. Alleys were 
bush hogged to create
a 10 foot alley at defoliation to facilitate harvest.
Seeding Rate: 5 seed per foot of row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System.
Application of Treatments: All fungicides were applied as a foliar spray using TX-12 
cone nozzles
mounted on ground slides spraying upward with two nozzles per row calibrated to deliver 26 
GPA at 75 PSI.
Fungicide Applications: Full bloom applications were made on August 3, and boll cracking applications
were made on September 8.
Planting Assessment: Stand counts were made on June 9, 1999
Disease Assessment: Disease ratings were made on October 13, 1999.
Harvest: Plants were harvested on November 3.
Results: Quadris 2SC, Benlate 50 WP, Tilt, Terraclor 4F, and Rovral 4F all significantly reduced the number of
rotted cotton bolls as compared to the control (see table). Cotton boll rot was not significantly reduced by two
applications (full bloom + boll cracking) of any of the fungicides compared 
to the full bloom and boll cracking
single applications. Seed cotton yields ranged from 2895 pounds per 
acre to 2111 pounds per acre for the Rovral
4F applied at full bloom and Benlate 50WP applied at boll cracking, respectively. There were no 
significant
differences in yields among treatments; however, full bloom applications 
increased cotton yield an average of 77
pounds per acre compared to the control.
24
ALABAMA AGRICULTURAL EXPERIMENT STATION
EFFECT OF SELECTED FOLIAR FUNGICIDES ON COTTON BOLL ROT AND SEED YIELD,
GULF COAST RESEARCH AND EXTENSION CENTER, FAIRHOPE, AL, 1999
Treatment Rate per acre Spray Schedule Diseased Bolls Seed Cotton Yield
number lb/ac
Untreated Control
Quadris 2 SC
Quadris 2 SC
Quadris 2 SC
Benlate 50WP
Benlate 5OWP
Benlate 50WP
Tilt
Tilt
Tilt
Terraclor 4F
Terraclor 4F
Terraclor 4F
Rovral 4F
Rovral 4F
Rovral 4F
0.20 lb
0.20 lb
0.20 lb
0.101b
0.101b
0.101b
4oz
4oz
4oz
16 oz
16 oz
16 oz
4 oz
4 oz
4 oz
Full bloom
Full bloom + Boll Cracking
Boll Cracking
Full bloom
Full bloom + Boll Cracking
Boll Cracking
Full bloom
Full bloom + Boll Cracking
Boll Cracking
Full bloom
Full bloom + Boll Cracking
Boll Cracking
Full bloom
Full bloom + Boll Cracking
Boll Cracking
LSD (0.05) 26.5 
526.5
92 a
56 bc
62 bc
57 bc
49 bc
52 bc
73 ab
72 ab
59 bc
38c
59 bc
55 bc
61 bc
44 c
63 bc
58 bc
2531 abc
2608 abc
2472 abc
2159bc
2667 ab
2190 bc
2111c
2618 abc
2348 bc
2331 bc
2254 abc
2557 abc
2434 abc
2895 a
2419 abc
2286bc
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 25
26 ALABAMAAGIUTRLEPRMNSAIO
Evaluation of Selected Fungicides for Control
of Cotton Boll Rot Disease,
Monroeville Experiment Field
Objective: To determine effects of selected fungicides on cotton boll rot and yield by conducting a cotton boll
rot fungicide test.
Location: Monroeville Experiment Field, Monroeville, AL
Cultivar: Paymaster 1220 BR/RR
Planting:
Date: May 5, 1999
Experimental Design: Randomized complete block with five replications.
Plot Design: Two-row plots, rows 40 feet long, 36 inches wide row spacing and 20 foot alleys
Seeding Rate: 5 seed per foot of row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System. The field was
not irrigated.
Application of Treatments: Fungicides were applied as a broadcast spray utilizing a CO
2
-charged,
backpack system with a two row boom equipped with flat tip nozzles (8001) calibrated to deliver 10 GPA at 30
PSI.
Fungicide Applications: Full bloom applications were made on August 2, and boll cracking applications
were made on September 8.
Disease Assessment: Disease ratings were made on October 13, 1999.
Harvest: Plants were harvested on October 29.
Results: Boll rot was not observed due to the intense drought. Seed cotton yields 
ranged from 1612 pounds per
acre to 1408 pounds per acre for the Quadris 2SC full bloom application and the 
Rovral 4F full bloom plus boll
cracking application, respectively .(see table). There were no significant differences 
in yield among treatments.
26 ALABAMA AGRICULTURAL EXPERIMENT STATION
EFFECT OF SELECTED FOLIAR FUNGICIDES ON COTTON BOLL ROT AND SEED YIELD,
MONROEVILLE EXPERIMENT FIELD, MONROEVILLE, AL, 1999
Treatment Rate per acre Spray Schedule Seed Cotton Yield
lb/ac
Untreated Control
Quadris 2 SC
Quadris 2 SC
Quadris 2 SC
Benlate 5OWP
Benlate 50WP
Benlate 50WP
Tilt
Tilt
Tilt
Terraclor 4F
Terraclor 4F
Terraclor 4F
Rovral 4F
Rovral 4F
Rovral 4F
0.20 lb
0.20 lb
0.20 lb
0.10 lb
0.10 lb
0.10 lb
4 oz
4 oz
4 oz
16 oz
16 oz
16 oz
4 oz
4 oz
4 oz
Full bloom
Full bloom + boll cracking
Boll cracking
Full bloom
Full bloom + boll cracking
Boll cracking
Full bloom
Full bloom + boll cracking
Boll cracking
Full bloom -
Full bloom + boll cracking
Boll cracking
Full bloom
Full bloom + boll cracking
Boll cracking
LS (0.05 200.56 ~v~r
1536 ab
1612a
1583 ab
1548 ab
1562 ab
1606 ab
1518 ab
1562ab
1461 ab
1583 ab
1551 ab
1423 ab
1493 ab
1519 ab
1408 b
1528 ab
----
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 27
200.56
LSD (0.05)
Evaluation of Quadris and Benlate Fungicides 
for
Soybean Foliar Disease Control,
Monroeville Experiment Field
Objective: To evaluate Quadris and Benlate fungicides, applied at the R3 and R5 stages of soybean growth, 
for
control of soybean foliar disease.
Location: Monroeville Experiment Field, Monroeville, AL
Cultivar: Carver
Planting:
Date: May 18, 1999
Experimental Design: Randomized complete block with 
five replications
Plot Design: Two-row plots, rows 27 feet long, 36 inches wide, 
blocks separated by 14-foot alley.
Seeding Rate: 10 seed per foot of row.
Cultural Practices: All plots were maintained throughout the season 
with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative 
Extension System. The field was
not irrigated.
Application of Treatments: Fungicides were applied as a broadcast spray 
utilizing a CO
2
-charged,
backpack system with a two row boom equipped with two flat tip nozzles (8001) 
per row calibrated to deliver 10
GPA at 30 PSI.
Disease Assessment: Foliar disease ratings were made on July 26, August 26, 
and September 8.
Harvest: Plants were harvested on September 28.
Results: Monroeville suffered a severe drought during the months of July, 
August, and September of 1999.
Foliar diseases were not observed on any date rated. Yields ranged from 
17.39 to 21.95 bushels per acre for the
Quadris 2SC R5 application and Quadris 2SC R3 application, respectively 
(see table). The Quadris 2SC 0.15
pounds per acre active ingredient per acre R5 application 
had a significantly lower yield than all other treatments.
28 ALABAMA AGRICULTURAL EXPERIMENT STATION
EFFECT OF QUADRIS 2SC AND BENLATE 50 WP ON SOYBEAN YIELD,
MONROEVILLE EXPERIMENT FIELD, MONROEVILLE, AL, 1999
Treatment Rate Timing Yield
ai/ac lb/ac
Untreated Control 20.50 a
Quadris 2SC 0.15 lb R3 21.95 a
Quadris 2SC + NIS 0.15 lb + 0.25 % R3 20.16 a
Quadris 2SC 0.20 lb R3 20.20 a
Quadris 2SC 0.15 lb R3 + R5 21.38 a
Quadris 2SC 0.15 lb R5 17.39 b
Quadris 2SC + NIS 0.15 lb + 0.25 % R5 20.38 a
Quadris 2SC 0.20 lb R5 20.43 a
Benlate 50WP 0.50 lb R3 20.97 a
Benlate 50WP 0.50 lb R3 + R5 20.68 a
LSD (0.05) 2.60
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 29
Evaluation of Selected Seed Treatments, In-furrow, and Foliar
Sprays for Soybean Stem Canker Control,
Monroeville Experiment Field
Objective: To evaluate selected fungicides, applied at planting, for control of soybean foliar disease.
Location: Monroeville Experiment Field, Monroeville, AL
Cultivar: TV5866RR
Planting:
Date: May 17, 1999
Experimental Design: Randomized complete block with five replications
Plot Design: Two-row plots, rows 25 feet long, 36 inches wide, blocks separated 
by 20-foot alley.
Seeding Rate: 10 seed per foot of row.
Cultural Practices: All plots were maintained throughout the season with standard herbicide, insecticide,
and fertility production practices as recommended by the Alabama Cooperative Extension System. The 
field was
not irrigated.
Application of Treatments: Fungicides were applied either as a seed treatment, 
an in-furrow spray or as a
foliar broadcast spray. All in-furrow sprays were applied with flat tip nozzles (8002E) calibrated to deliver 
20 GPA
at 30 PSI. The foliar fungicides were applied at the 2 to 4 trifoliate stage (V2) as a broadcast 
spray utilizing a CO
2
-
charged, backpack system with a two row boom equipped with two flat tip nozzles (8001)per 
row calibrated to
deliver 10 GPA at 30 PSI.
Planting Assessment: Stand counts were made on June 9, 1999.
Disease Assessment: Foliar disease ratings were made on August 2, August 26 and September 
8
Harvest: Plants were harvested on September 28.
Results: Seedling stands at 23 days after planting ranged from 114 to 182 plants 
for the LS 275 and the Rovral
4F treatments, respectively (see table). Emergence was significantly reduced by Quadris 
applied in-furrow and the
seed treatments LS 275 and LS 022 + Allegiance as compared to the control. Plants 
per foot or row ranged from
4.56 to 7.31 for the LS 275 and Rovral 4F treatments, respectively. The skip index indicated 
the untreated control,
Rovral, and Quadris 2SC (foliar application) produced a significantly more uniform stand than 
all other treat-
ments. Stem canker was not observed during this trial. Yields ranged from 25.44 to 19.42 bushels per 
acre for the
Quadris 2 SC (foliar application) and ACT, respectively.
30 ALABAMA AGRICULTURAL EXPERIMENT STATION
EFFECT OF FUNGICIDES ON SOYBEAN STAND, SKIP INDEX, AND YIELD,
MONROEVILLE EXPERIMENT FIELD, MONROEVILLE, AL, 1999
Treatment Rate Timing Emergence' Plants Skip Yield
23 DAP per ft of row Index
2  
bu/ac
23 DAP 23 DAP
Untreated Control - 171.80 a 6.87 a 2.80 c 20.33 b
Quadris 2SC 0.10 ozai/1000 rft in-furrow spray 125.60 bc 5.02 bc 12.20 ab 20.16 b
Quadris 2SC + NIS 0.15 ozai/1000rft in-furrow spray 117.20c 4.69c 12.20 
ab 20.71 ab
Quadris 2SC 0.10 ozai 1000 rft+ in-furrow + 114.40 c 4.58 c 14.60 a 20.63 ab
0.20 lb ai/ac 2-4 trifoliate
Quadris 2 SC 0.20 lb ai/ac 2-4 trifoliate 157.00 ab 6.28 ab 1.80 c 
25.44 a
LS 275 0.2 oz/cwt seed treatment 114.00 c 4.56 c 
11.40 ab 21.21 ab
LS 022 + Allegiance 0.2 oz + 0.1 oz/cwt seed treatment 129.00 bc 5.16 bc 8.60 abc 21.75 ab
RTUVitavaxThiram+ 6.0 oz+ seed treatment 150.80 abc 6.03 abc 10.00 ab 23.32 
ab
Allegiance 
0.375 oz/cwt
Rovral 4CF 4.0 oz/ac in-furrow spray 182.80 a 7.31 a 3.00 c 
23.45 ab
ACT 6.0 oz/ac in-furrow spray 146.20 abc 5.85 
abc 7.40 bc 19.42b
LSD (0.05) 38.99 1.56 6.86 
4.96
....25 = 25 ftgap.
SNumber of live soybean plants per 25 ft of row; all rows received 250 seed.
2Skip index ratings on 25 ft of row. Ratings scale: 1 = 1 ft. gap; 2 = 2 ft. gaps; 3 = 3 ft. gap;
Means compared using Fisher's protected least significant difference test.
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 31
32 ALABAMAAGIUTRLEPRMNSAIO
Chemicals Used in the Soil-borne and Foliar Disease Studies
Product Manufacturer. Composition
ACT
Allegiance - FL
Apron FL
Apron XL
Benlate 50 WP
LS 022
LS 275
LS 288
Maxim
NU-Flow M
NU-Flow Film Coat
Nu-Flow T
Quadris 2SC
Quick-Gro, Inc.
Route 2 Box 75
Lake Providence, LA 71254
Gustafson, Inc.
1400 Preston Road, Suite 400
Piano, TX 75093
Novartis
P. O. Box 18300
Greensboro, NC 27419
Novartis
P. 0. Box 18300
Greensboro, NC 27419
DU Pont
Agricultural Products
Walker's Mill, Barley Mill Plaza
Wilmington, DE 19898
Gustafson, Inc.
1400 Preston Road, Suite 400
Piano, TX 75093
Gustafson, Inc.
1400 Preston Road, Suite 400
Plano, TX 75093
Gustafson, Inc.
1400 Preston Road, Suite 400
Piano, TX 75093
Novartis
P.O. Box 18300
Greensboro, NC 27419
WILFARM
6401 North Oak Trafficway
Gladstone, MO 64118
WILFARM
6401 North Oak Trafflcway
Gladstone, MO 64118
WILFARM
6401 North Oak Trafficway
Gladstone, MO 64118
Zeneca Ag Products
1800 Concord Pike
Post Office Box 15458
Wilmington, DE 19858-5458
unavailable
Metalaxyl- (2,6-dimethylphenyl)-N-
(methoxyacetyl)-alanine methyl ester
Metalaxyl -(2,6-dimethylphenyl)-N-
(methoxyacetyl)-alanine methyl ester
Metalaxyl -(2,6-dimethylphenyl)-N-
(methoxyacetyl)-alanine methyl ester
Benomyl Methyl 1-(butylcarbamonyl)-
2-benzimidazolecarbamate
unavailable
unavailable
unavailable
Fludioxonil (R)-2-(2,6-dimethylphenyl)-
metnoxyacetyl-amino)-propionic acid
methyl ester
unavailable
unavailable
unavailable
Azoxystrobin: methyl (E)-2-{2-2[-6(2-
cyanophenoxy) pymntimnifin-4-
yloxy]phenyl}-3-methoxyacylate
continued
32 ALABAMA AGRICULTURAL EXPERIMENT STATION
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 3
Chemicals Used in the Soil-borne and Foliar Disease Studies, continued
Product Manufacturer Composition
Ridomil Gold PC 1IIG
Rovral 4CF
Terraclor 2E
Terraclor 15G
Tilt 2E
Terraclor Super X 18.8G
Terraclor Super X EC
TSX G/WGB49
Novartis
P.O0. Box 18300
Greensboro, NC 27419
Rhone-Poulenc
P. O. Box 12014,2 T. W. Alexander Drive
Research Triangle Pk, NC 27709
Uniroyal Chemical Inc.,
Benson Road
Middlebury, CT 06749
Uniroyal Chemical Inc.,
Benson Road
Middlebury, CT 06749
Norvartis
Post Office Box 18300
Greensboro, NC 27419
Uniroyal Chemical Inc.,
Benson Road
Middlebury, CT 06749
Uniroyal Chemical Inc.,
Benson Road
Middlebury, CT 06749
Uniroyal Chemical Inc.,
Benson Road
Middlebury, CT 06749
Pentachloronitrobenzene (R)-2-
[(2,6-dimethylphenyl)-methoxacetyamino]
-propionic acid methyl ester
Iprodione:3-(3,5-dichlorophenyl)-N-(i-
methylethyl)-2,4-dioxo-1-
imnidazolidinecarboxamide
Etridiazole
5-Ehroxy-3-trichloromethyl-1,2,4-
thiadiazole
Pentachloronitrobenzene
Propiconazole: 1-[[2-(2,4-
dichlorophenyl)-4-propyl- 1,,3-dioxolan-
2-yl] methyl]-1IH- I,2,4-triazole
Pentachloronitrobenzene
5-Ethoxy-3-(trichloromethyl)-1,2,4-
thiadiazole
Pentachloronitrobenzene,
GB49 - unavailable
,,..
MANAGEMENT OF DISEASES ON COTTON AND SOYBEAN 1999 33


Alabama's Agricultural
Experiment Station 
System
AUBURN UNIVERSITY
Main Agricultural Experiment Station,
Auburn.
MESTONE MAD JACKSON 
Alabama A&M University
SE. V. Smith Research Center,
Shorter.
MORGA 
MARSHALL 
DE KALB
c 2 
1. Tennessee Valley 
Research and
3 ETOWAH CHEROKE Extension Center, Belle Mina.
2. Sand Mountain Research and Extension
Center, Crossville.
JEFFERSON INTCLAIR 
3. North Alabama Horticulture Station,
TALEDEGA CLEBURNE 
Cullman.
HELBY CLAY 4. Upper Coastal Plain Research Station,
Winfield.
B C ooSA TALLAP CHAME 5. Chilton Area Horticulture Station,
5 6 Clanton.
6. Piedmont Research Station, 
Camp Hill.
AUTAUGA ELMORE 
7. Prattville Experiment 
Field, Prattville.
3 7 
RUSSELL 8. Black 
Belt Research and 
Extension
Center, Marion Junction.
BUOCK 9. Lower Coastal Plain Research Station,
Camden.
BUTLER PKE 10. Monroeville Experiment Field,
HENRY Monroeville.
CONE CRENSHACOFFEE DALE 
11. Wiregrass Research 
and Extension
COVINGTON Center, 
Headland.
12 
GENEVA 
12. Brewton Experiment 
Field, Brewton.
13. Ornamental Horticulture 
Station,
Spring Hill.
14. Gulf Coast Research 
and Extension
Center, Fairhope.