tA8L OF CoNrotlNiS INTRODUCTION.............. SXPSRI4EM4AL PROCEDURES* Pace COMPARINGVARIETTES....*.0.... @0 00e AC'KNOWLEDGMENTS. .. 0 ... 4&. ..0 Table, 1. Entries and Sources for 1983 .... Table 2. Cultural1 Practices for Soybean Variety Tests Table.3.. Performance of Soybean Varieties in Northern TablIe- 4. Perfrmnce of Soybean Varieties in Central Table. 5. Perfrmance-of Soybean Varieties in Southern Table 6. Performance of Soybean Varieties on Sumter S( Junction.*Alabama, 1.983., Table*7. Performnce of Soybean Varieties on Vaiden S4 Junction, Alabama, 1983.1, . Table 8. Perfrmance-of Soybean Varieties at Fafrhope Table 9. Performance of Soybean Varieties in Northern- 3 myear Summuary .0.9.0.0.0*0* * * * . 0. 0 Table 10. Performance sof Soybean Varieties in Central 3.wyear Sunmary . 0.4 . 0..0. . . e . . 0. 0 TablIe 11. Performance of' Soybean Varieties i [ Southern 3,nyearSumrmary..................... in 1983 * 9 Al abama 0 0 0a * * Al abama oil, Marion Alabama, Al abama, Al abama, iAlabama, *14 niMari on * is 0 zc .S2 MALE OF CONTENiTS (CONTINUEn) Performiance of Soybean Varieties on Sumter Soil, Marion Junction, Alabama, 3-year Summary........... 28 TablIe 13. Performance of Saybea n Varieties an Junction., Alabama, 3-year Summary. Table 14, Performance of Soybean Varieties in 3-year Swiiary............... 0 1 Table 15. Performance of Soybean Varieties in STEM CANKER DISEASE REAC' ON AT MARION JUNCTIOQN Procedures ........ Table 15., Stem CankerRatings Made an Soybean Vaiden Soil,3 Marioan 0* &0 0 0 , 0 0* * 0 0 Fairhape, Alabama, Prel imi naryres ts ANO SHORTER, Va ri*eti es atMarioan RECOMMENOD Junction and Shorter, Alabaa* SOYBEAN4 VARIETES FOR 1984.1.*0 . S S S S S S S S (nfrmatiofl contained herein is availablewalpeosr'jdls of race. color. sex. o ai Orign Tab e 1-. .30 12 034 036 .37 * 38 .39 o042 PERFORMANCE OF SOYBEAN VARIETIES IN ALABAMA, 1983 G.V. Granade and W.C. Johnson INTRODUCTION Soybean variety tests are conducted annually by the Alabama Agricultural Experiment Station. Varieties in the test are produced by both public and private breeders. Maturity groups range from group IV, early, to group IX, late, table 1. The 10 locations used represent the major soil and climatic regions of Alabama. These locations are divided into logical soybean growing regions. The regions and locations are: Regi io Location Northern Belle Mina, Crossville Central Camden, Prattville, Shorter Southern Brewton, Headland, Monroeville Black Belt Soils Marion Junction Baldwlin-MobilIe Fairhope A standard test is grown at each location. In addition, a date of planting test is grown in each region and preliminary tests are grown in the northern, central, and southern regions. The preliminary test contains experimental varieties and released varieties which are new to that particular region. These varieties will be placed in the standard test if their performance warrants. t Research Associate and Professor, Department of Agronomy and Soils. EXPERIMENTAL PROCEDURES Data were collected on seed yield, moisture, lodging, shattering, plant height, and maturity date. Plot yields were adjusted to 13 percent moisture and converted to bushels (60 pounds) per acre. Lodging was scored on a scale of 1 to 5 follows: I - almost all plants erect. 2 - either all plants leaning slightly (less than 450) or a few plants down. 3 -either all plants leaning moderately (approximately 450) or 25 to 50 percent of the plants down. 4 - either all plants leaning (more than 450) or 50 to 80 percent of the plants down. 5 - all plants down. Shattering was rated 1 to 5 and was based on.performance of the border row 14 days after maturity. A rating of 1 indicates no shattering and a rating of 5 is 20 percent or more shattering. Plant height was determined by measuring from the ground to the top of the plant at maturit3 Maturity date was the day 95 percent of the pods were brown. Harvest was approximately 7 to 10 days later. RESULTS Weather conditions were favorable at most test locations for soybean production in 1983. Yields ranged from an average of 48 bushels per acre at Marion Junction to 14 bushels per acre at Belle Mina. Yields were reduced at Belle Mina due to low rainfall during flowering and" pod fill. A serious insect problem defoliated the plants late in the growing season at Prattville. An unidentified disease appeared late in Camden, while stem canker was a problem at Marion Junction and Shorter. Also, soybeans showed symptoms of iron deficiency in the second planting date test on Sumter soil at Marion Junction. Yield and other pertinent data from 1983 standard and date of planting tests are presented in tables 3-9, and summaries of data for those varieties grown for more than 1I year are in tables 9-14. For the 1983 season, data have been combined into the northern, central, southern, Black Belt soils, and Baldwin-Mobile regions of the State to facilitate comparisons. Yields for preliminary tests are presented in table 15. Yields from the preliminary test at Camden are not reported due to excessive variation. COMPARING VARIETIES A least significant difference (L.S.D.) for seed yield was computed for each test in 1983 and is at the bottom of the yield column for each table. To compare any two varieties with a test, calculate the difference in the yield of the two varieties and compare this difference to the L.S.D. value. If this difference Is less than the L.S.D. value, there is probably no real difference between the yields of the two varieties and the observed difference is due to experimental error. It is best to also look at the multi-year averages when comparing varieties. Usually at least 3 years of data are needed before the yield potential of a variety can be properly evaluated. For each location, the coefficient of variation (C.V.) is a measure of the variability in the test and is expressed as a percentage of the test mean. ACKNOWLEDGMENTS The authors express their appreciation for cooperation and collection of data to the individuals at the following units of the Alabama Agricultural Experiment Station. Black Belt Substation L.A. Smith Marion Junction H.W. Grimes Brewton Experiment Field J.A. Pitts Brewton Gulf Coast Substation E.L. Carden Fai rhope N.R. McDaniel Lower Coastal Plain Substation J.A. Little Camden D.P. Delaney Prattville Experiment Field D.P. Moore Prattvi lle Sand Mountain Substation J.T. Eason Crossville M.E. Ruf E.V. Smith Research Center J.R. Akridge Shorter Tennessee Valley Substation W.B. Webster Belle Mina V.H. Calvert, II Wiregrass Substation J.G. Starling Headland H.W. Ivey Appreciation is also expressed to Sally Bagwell, Department of Research Data Analysis, and Dianna L. Shellman, Department of Agronomy and Soils, for their assistance. Special appreciation is expressed to W.H. Hearn and C.D. Jacks, Department of Research Data Analysis, for updating and programming the computer for printing the tables for the variety report. Also, special appreciation is expressed to Barbara Cosper, Research Associate, Department of Agronomy and Soils, William Gazaway, Extension Plant Pathologist-Nematologist, and John Henderson, Extension Agronomist- Soybeans, David Weaver, Assistant Professor, Department of Agronomy and Soils, and Paul Backman, Professor, Department of Botany, Plant Pathology, and Microbiology for their research data and assistance in preparing the stem canker report. Special appreciation is also expressed to the following seed companies for their financial support of the variety testing program: Asgrow Seed Company W.E. Dimond Kalamazoo, Michigan AgraTech Seeds Inc. Bob G. Jones Ashburn, Georgia Coker's Pedigreed Seed Co. J.J. Stanton, Jr. Hartsvllle, South Carolina Delta and Pine Land Co. Harry B. Collins Scott, Mississippi Eagle Seeds George A. Berger Weiner, Arkansas FFR Cooperative Michael L. May Bells, Tennessee Helena Chemical Co. Bill Washburn Memphis, Tennessee Jacob Hartz Seed Co., Inc. Curtis Williams Stuttgart, Arkansas NAPS Jimmy L. Barker West Memphis, Arkansas Ring Around Products, Inc. J.A. Mullins Dallas, Texas Terral-Norris Seed Co, Inc. Ronald E. Hagar Lake Providence, Louisiana Table 1. Entries and Sources for 1983 Brand-variety AgraTech Seeds, Inc. Ashburn, Georgia. Alabama Crop Improvement Association Auburn, Alabama Asgrow Seed Company Kalamazoo, Michigan Coker's Pedigreed Seed Company Hartsville, South Carolina Delta and Pine Land Company Scott, Mississippi Delta Branch Experiment Station Stoneville, Mississippi Edisto Experiment Station B1lackville, South Carolina FFR Cooperative Bells, Tennessee (continued on following page) AgraTech 67 GK 21 GK 120 Essex Foster Kirby Lee 74 Ransom A 5474 A 5618 A 6520 (X6420) A 7372 Coker Coker Coker Coker Coker Coker Coker Coker Coker Coker Coker Coker Coker Coker Coker 156 237 317 338 355 368 488 79R-5 80-764 80-795 80-817 80-846 80-870 80-917 80-926 Deltapine Deltapine Deltapine Deltapine Del tapine. Del tapi ne Bedford Govan FFR 559 FFR 560 FFR 668 (Experimental) (ExperimentaIl) (Experimental) (Experimental) (Experimental) (Experimental) (Experimental) (Experimental) 105 246 345 417 497 506 Source Table 1. Entries and Sources for 1983 Source Georgia Seed Development Commission Athens, Georgia Brand-variety Cobb Duocrop GaSoy 1.7 Hutton Wright Helena Chemical Company Memphis, Tennessee HB8407-83 -5 HBw468-*01-6 HBwS074D14 Shil1Oh Sumter Wilstar 550 Wilstar 790 (Experimental) (Experimental) (Experimental) Jacob Hartz Seed Company, Inc. Stuttgart, Arkansas Mississippi Foundation Seedi Stocks Mississippi State, Mississippi Missouri Crop Improvement Association Columbia, Missouri Moorer Seed Farm Hardaway, Al abama North American Plant Breeders West Memphis, Arkansas North Carolina State University Raleigh, North Carolina Northrup King Co. Columbus, Mississippi (continued on following page) H78-a160 (Experimental) H78-1568 (Experimental) H79-7817 (Experimental) H79-1I3403 (Experimental) Hartz 5171 (H784766) Hartz 5252 (H76-502) Hartz 5370 (H78-443) Hartz 7126 (H76-*67Z-3A) Forrest Tracy M Bradl ey Braxton Davis. Agri pro AP 70 Agripro AP 71 NAPS 517 NAPS 613. NAPB 705 NS-27-79 (Experimental) NS-340"79 (Experimental) Johnston M77-*114 (Experimental) McNair 700 McNair 770 S6,9-96 S72-60 .. r i I c i Table 1. Entries and Sources for 1983 Source Brand-vari tvv Pioneer Hi-8red International, Inc. Tipton, Indiana Quality Seed and Fertilizer Thompson Station, Alabama Ring Around Products, Inc. Dallas, Texas Rio. Farms Edcouch, Texas Pioneer 5482 Pioneer 9561 Centennial Mitchel l RA 480 RA 502 RA 580 RA 604 RA 606 RA 680 RA 702 RA 801 450 Jupiter R Santa Rosa R Riverside/Terra Memphis, Tennessee Terral-Norris Seed Company, Inc. Lake Providence, Louisiana Texas Crop Improvement Association College Station, Texas University of Arkansas Fayettevi lle, Arkansas Virginia Crop Improvement Association Holley, Virginia Yield Yield Yield Yield Yield King King King King King 503 563 593 613 713 505 606 708 808 Terra-Vig Terra-Vig Terra-Vig Terra-Vi g Dowling Jeff Bay w %W Table 2. Cultural Practices for Soybean Variety Tests in 1983 Location Type test Date planted Herbicides used Fertilizer applied Belle NMina Crossville Prattville Standard Preliminary Standard Standard Standard Standard Shorter Camden Preliminary IHeadl and Monroeville Brewton Marion Junction Fairhope Standard Prellminary Standard Standard (Sumter) Standard (Vaiden) Standard May II Nay II may 10 June 16 May 9, June 17 May 25 May 25 Nay 27 May 18 May 31 June 10 July 7 May 26 July 11 Hay 26 July 11 June 13 August 8 Treflan, Trefl Ian, Surflan, Surflan, Trefl Ian Trefl Ian Treflan, Treflan, Dyanap Dyanap Dyanap Dyanap Vernam Vernam Treflan, Vernam; Toxaphene Balan, Dual None Paraquat None Treflan Treflan Treflan Treflan Attac Lasso, Fusilade 2 tons lime/acre 2 tons lime/acre 250 lb. 0-24-24/acre 200 lb. 0-24-24/acre None recommended by soil test None recomnended by soil test 250 lb. 3-18-36 + sulfur/acre 300 lb. 0-20-20/acre 25 lb. sulfur/acre 9 lb ZnSO 4 /acre 300 lb. 0-20-20/acre 25 lb. sulfur/acre 9 lb. ZnSO 4 /acre None recommended by soil test I ton lime/acre None recommended by soil test 300 lb. 0-20-20/acre 250 lb. 0-30-15/acre 250 lb. 0-30-16/acre 200 lb. 0-20-20/acre 200 lb. 0-20-20/acre 300 lb. 0-14-14/acre 300 lb. 0-14-14/acre ~x1LLIna..A1eLZ.. flu^ AOh A h CIALATLSWIMD 45049 SCUE&L.LMLL A% S618 15.2 26.4 29.9 1.4 1el) 1.? 100 331 6 9? 0? 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Aff * ARU11IUYGROUPS VI1 AND VI I I 'Test grown at this site for 2 years only, Ail& A. U.. sIlL 111 Alta11_.CM-091 ISta e SU ea SE U ttI . 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YIELD KING 503 17.3 -%m YIELD KING, 563 18.06 q YIELD KING 593 21.8 A 65ZO 30*. SRADLSY 18.3 21 *5- CENTENNIAL 18.4 qu COekER 80-795 18.5 33 *8 COKER 80-8317 17.2 2901 9 COKER 80-846:1.2310.0 OELTAPINE 246- age27 *4 FFR 668 16.8 30.7 HARTZ 6383, am32*1 H8-6-0l-6 *1 4.o0 31.5s 878S-160 1.116.7T 879-133403 1.029A.3 H?9-,w7817 20.5 32.4 .N S-34 0-7 9 17.8 34.9 RA 604 31.3 S UM TER Ao31.0 S69-w96 33.5 YIELD KING 613 14.2031.00 34 AAL F t 15 .0 l4aLl .15,.1RF 4NC ~SL~mFA12 V4jjL~TTj_ TN PRILUI4NASRya TE;S.T XUtUmn P3-IR09 8R-ANO-wVAR I*. TY NOitr~H RN IfLLtfL) SI2UTHERN L wMl WnR9,V-r L L c, T 372 BRA XTCN C0KER 237 CCOI(IR 80-870O COKER 80-91.7 COK8R 8 Om"9126 0'SLTAPLNE 497' GK V. H4ARTZ T1Z6 HB'M507- 1-7 NAPS: 705 TeRRA-YVIG 708 YIELD KING 713 MGM -y L KIRIBY TCPRRA-VIG 808' ThsT -?ANs 1.7.5 2905 ~ f!J 22 4616-14---- FOR STANDARD VARIETt-ES FOR N~ORTHERN ARE CENiTENNIAL AND SOUTHERN-ARE PRAXTON AND KIRBY. FOREST; AND is 169o7' 1.1 1,4*7 1.5*9 34 *3 30.7T 33.5 34.1l 34.3'. 33 *8 28.5 31.5 3100 30 *1. STEM CANKER DISEASE REACTIONS AT MARI-ON JUNCTION AND SHORTER, ALABAMA" Stem canker disease of soybeans, caused by the fungal organism Diaporthe phaselorum var. cavlivora, was first recognized in Alabama as a problem in 1977 in isolated areas of the Black Belt region. In 11983, severe levels of stem canker were reported from 19 counties in Alabama., and some stem canker was detected in 17 other counties. Symptoms of the disease first appear as small, reddish-brown lesions usually located at the base of the petiole on the lower half of the main stem.o As the disease progresses,, the lesion elongates, becomes black and sunken surrounded by green plant tissue, and may eventuall1y girdle the-stem,, killing the entire plant. The leaf tissue typically becomes yellow while the veins remain green. Reddish-brown cankers on the stem and leaf yellowing between the veins are a good indication of stem canker-, but a definite-diagnosis shoul d be made by sending plant samples to the Plant Diagnostic Center, Extens-ion-Hall, Auburn University, AL It is still unclear how stem canker is spread over long distances. Most pathologists believe that the fungus can be-carried on seed, however t6his has not been proven consistently and further research is needed before this can be definitely established., It is not recommended that growers save or purchase seeds fromfields known to be infested with stem canker. Since the disease-organism survives in the soil on 36 by shredding the stems at harvest and turning them under will encourage deterioration of the fungus. Once established, it is spread by wind- blown rain and contaminated equipment. Moist conditions early in the growing season appear to favor stem canker development and severity, while any of numerous factors that may stress the plant, particularly at the pod-filling stage, may enhance losses due to stem canker. Research at Auburn indicates that the normal early pod-set and early pod-fill foliar fungicide sprays will not control stem canker, and that an early season fungicide application may be beneficial. However, more research is needed on fungicide timing and rates before this practice can be recommended. Procedures Stem canker disease ratings were made on entries in the soybean variety tests located at Marion Junction and Shorter. Varieties were planted at two dates on two soil types at Marion Junction. Stem canker severity was determined at the pod-filling stage of development using two subjective rating scales. Rating scale A is a 1-5 scale: 1, 0-5 percent of plants dead or dying; 2, 6-10 percent of plants dead or dying; 3, 11-24 percent of plants dead or dying; 4, 25-50 percent of plants dead or dying; 5, over 50 percent of plants dead or dying. Rating scale B is a 0-5 scale, with ratings made to the tenth unit: 0, no visible signs of disease; 1.0, 10 percent of plants dead or dying; 2.0, 35 percent of plants dead or dying; 3.0, 65 percent of plants dead or dying; 4.0, 90 percent of plants dead or dying; 5.0, all plants dead. Rating scale A gives a general indication of varietal suscepti- bility, while rating scale B more closely approximates the percent dead or dying plants so that observable differences in varieties can be detected. 37 Results Data from varietal evaluations indicate that significant levels of stiem canker developed during 1983 in both locations and in 1982 and 1983 at Marion Junction, except for the second planting date in 1983, table 16. Tracy M and Braxton had the highest degree of tolerance to stem canker. Other varieties ranged from moderately tolerant to very susceptible. Planting a tolerant variety should lessen the chance of severe damage from stem canker, however this is no guarantee that stem canker will not be present. Futher research is needed before substantial varietal recommendations can be made. Additional information on stem canker disease of soybean and its control may be obtained from the Alabama Cooperative Extension Service. 38 ______ Table 16. Stein Canker Ratings Made on _So bean Varieties at Marion Junction nihre lbm Marion Junction Sumter Soil Vaiden!Si Brand-variety 1983- 1982. 1982-1I983AV. 1982 1983192Sot Date 1 Date I 0Dde .1Date.2Dae218 ScalIe SaeScale SScalecacalalescale Scale 31I ca e S13Te T A 1 B 2 A B A B A B A B Aa Early3 Bay m4 1 1 03-- - 3 1.4 1 0.3 I 4 Bedford 3 1.2 3 1.6 3.0 1,4 3 1,05 3 1 .91 4 M Deltapine 105 3 1.56 2 0.1 2.5 1.1 3 1.3 2 0.814 43 Deltapine 345 3 1.4A -low- - 2 0.914 43 Essex m4 14 m 14m- - 4 1.7 2 0614 M- Forrest 3 1.5 2 1.0 2.5 1.3 3 1.4 31.1 14 4 Hartz 5370 00 a no a* moo* am--Ow &W STerra-Vig 505 4 1.6 - - - - - 2 0.714 43 Wilstar 550 oft- -- - - - Mediurn V6520 3 1.1 so om am-- WOOD-2 0.8 - - - AgraTech 67 2 0.9 4 2.0 3a0 1.5 3 1.2 1 0.1 -- I Centennial 2 0.9 1 0.3 1.15 0.6 1 0.5 1 0.23 1.1 Coker 156 3 1.,3 2 0.6 2.5 1.0 1 0 1 01 4 1.91 Davis 2 0.9 2 0.6 2.0 0.8 1 0.5 1 0.3 4 2. 1 Deltapine 506 2 0.,9 10.18 -am " m Ow I& -- m1 0.3 4 17 Hartz 7126 3 1.2 am - - - -'-1 0.53 1.2 Jeff 4 2.1 2 0.8 3.0 1.5 2 0.7 3 1:34 1.4 Lee 74 3 1.4 3 1.2 3.0 1A3 2 1.2 2 0.8 4 21 - RA 604 4 2.1 -Oman-- Ow--4 1371 1 RA 680 2 0.09 -*MGM- - 1 0.13 1.1 S69-96 - -Im 3 1.5 -- 3 1.*3 - - -am Terra-Vig 606 2 1.0 on -- as-am-em-- -- 1m0004 2. Tracy M 1 0.0 1 0.0 1.0 0.0 1 0.0 1 0.0 144 1 1.3 1.2 1.4 0.8 0.7 0.3 0.1 0.9 1.6 2.5 0.2 1. 1 0.7 0,0 continued on the following page Table 16. Stemi Canker Ratings, M'ade-on Soybean Varieties at MarionJnto nmhre M0arion Junction Brand-variety 'Date 1 iiFe' Pat e-___ _ Dat 2 IaleSca Scale _Scale Scale 7Scle 1Tc i Scale Scale il ib I-ate A'gripro AP 70 2 0.71 4 2.0 3.0 1.4 3 1.1 1 0.3 Agripro AP 71 aft OW, am am awft sat 000 own me, am 000 owe Braxton 1 0.*0 1 0.00 1.0 0.0 2 0.7 1 002 Cobb 2 0.7 4 1.7 3.0 1.2 3 1.1 1 0.2 0. Coker 237 4 2.1 3 1.2 3.5 1.7 3 1.13 1.4 Coker 317 2 1.0 4" am Me em Me on 1m 0.4 3e am W Coker 368 aft af 0 " mem af Me epe af so We am am Oft Me W Deltapine 497 2 0.6 oft an am aft "a MW 1w 0.2 2os am" Duocrop 3 1.1 4 1.7 3.5 1.4 2 0.6 1I. foster 1 0.5 4- 1.8 2.65 1.2 3 1.5 1 0.3 taSoy 17 2 0,8 3 1.3 2.5 1.s1 2 0.7 1 053 1 Govan 2 0.8 4 1.09 3.60 1.4 3 1.1 1 0.3 1111 507-D1-7 2 0.8 Mea Sup aw me we 00 1m 0.2 3t ea Hutton 4 2.5 4 2.2 4*. 2.4 4 1.6 4 2.4 2f K irhy 2 0.7 4 1.7 3.,0 1.2 3 1.12 0.2 0. Mcflair 770 aw es *00 am aw-f afatW _ a-n eM wO i NAPB 705 0- We em me am ft mb No aw of we ft ft lo go Me Mae Iallsoni 2 1.0 3 1.05 2.5 1.3 2 0.7 3 082 1 Alabama Shorter, 1983 A B 2 0.,6 1 0.6 1 0.0 5 3 1.4 5 2 0.6 2 0.6 D 2 0.6 3 2 0.is6 3 3 1.2 ? 2 0.7 3 1 0*3 1 0.3 ) 4 2.1 1 0.2 2 0.9 2 0.8 ? 2 1.0 continued on the following page Table 16. Stem Canker Ratings- Made on Soybean Varieties at Marion Junction andShreAlba -Sut e S IMari-on Junction, af 1983 198 1982:1983 av. _1982 1983192Sot Brand-variety DateIF _____IDat I D a1teii2 Date 1DtI218 S ae iScae Scale Se Scalei SicaleScle- ScaScale ScaEle3T~clSae5 RA 701 -am-- -- -ease--as--a of4 2.t- RA 702 4 2.2 -f -am 00" ef-- "as4 200- - RA 800 &*as so," tam an soma go amom4 1.900 RA 801 4 2.3 some ow- ame w-w so"&4 2.1 - -4 Terra-Vig 108 - - -so - -an - - - - -am 0003 Wilstar 790 3 1.6 4 2.2 3.5 19 3 1.3 3 1.65 4 18 Wrgt2 0.6 3 1.3 2.5 0.9 2 1.0 1 0.1 3 1. 2 Test means 2.6 1.16 2.8 1.24 2.,67 1.20 2.5 1.03 1.8 0.66 33 15 . 1 Rating scale A= 1. 0-5% of plants dead or dying.; 2, 6-10% of plants dead (ying; 4, 25-50% of plants dead or dying;. 5, over 50% of plants dead or dying. or dying; 3, 11-24% of plants dead or Rating scale B= 0, no Visible signs of disease; 1.0, 10% of plants dead or dying; 2.0. 5 fpat edo dying; 3.0 65% of plants dead or dying; 4.0, 90% of plants dead or dying* 5.0, all plat)ed 3 Muma tu re. I-' )cale 1.9 1.4 0.86 RECOMMENCED SOYBEAN VARIETIES FOR 19084 The list of recommended varieties was prepared by'%/-"t*he au thors of this report, 0.8. Weaver, soybean breeder, Department of Agronomy and Soils, and J.B. Henderson, Agronomis-I.aSoybeans., Alabama Cooperative Extension Servicebased an variety test performance f'or at lea-st 3 years. Northern Alabama Earlyv Bedford Deltapine 105 Deltapine 345 Essex Forrest W ilstar 550 Medium- Centennial Coker 156 Davi s Lee 74 Tracy NM Central Alabama Deltipi ne 105' Deltapine 345 Med ium AgraTech 57 Centennial Coker 156 Davi 5 Tracy M Late- Braton Cobb Coker 488 Deltapine 497 Hartz 7126 McNair 770 Southern Al abama Med i urn Agripro AP 70 B raxton- GaSoy 17 Ransom Wright Black Belt Soils Earlyz Deltapine 105 RA 480 Medium Cente'ni al Coker 156 Davi~s RA 680 Tracy M L a te araix-ton Cobb Coker 488 Ransom Wright ~Bedford Centennial Davis Deltapine 105 Coker 156 $69-96 Baldwin-Mobile lMed i urn B.raxton Deltapine 497 GaSoy 17 McNair 770 Wri ght 4Z Late Braxton Ransom EarlI Coker 156 Dayvis Tracy NM Late Coker 48 Foster Kirby Late Coker 368 Kirby