Table 7. Yields and disease ratings of eight Maturity Group III Roundup Ready soybean varieties in 10 County Standard Tests and in small plot trials at one Research and Education Center and one on-farm location in Tennessee during 2017

Summary from 9 County TestsSummary from Small Plot Research
Research and Education Center at Milan (RECM)On-farm Location in Jackson (JAX)
RECM – YLDOther DiseasesJAX – YLD
MSVarietyAvg. Yield (bu/ac)*TreatedNon-treatedFrogeye leaf spotTarget SpotRECM*TreatedNon-treatedFrogeye leaf spotTarget Spot
AAgriGold G3520RX67.955.351.9MODMOD48.145.9MODHIGH
AAsgrow 39X767.756.855.5HIGHMOD55.952.5HIGHHIGH
AAsgrow 36X667.656.451.7MODMOD49.750.7MODHIGH
AAsgrow 38X667.352.450.7LOWMOD
ADyna-Gro S39XT0867.257.449.9HIGHMOD54.649.9MODMOD
ANK S39-R9X65.855.450.5MODMODCLB59.851.3MODMOD
ABWarren Seed DS 383864.858.254.2MODLOW
BWarren Seed BG 381061.947.144.3LOWMOD47.147.9LOWMOD
  YLD= Avg. Yield @ 13% moisture MS= Varieties that have any MS letter in common are not statistically different in yield at the 5% level of probability. Varieties denoted with an asterisks (*) or (**) etc. were in the top performing group for consecutive years. County Locations include: Calloway KY, Coffee, Dyer, Fulton KY, Gibson, Hickman, Jefferson, Lake, Madison, Weakley *Treated plots sprayed with Quadris TOP SBX @ 7 oz./Acre + 0.25% Induce @ R3 growth stage. RECM varieties planted May 31 and JAX planted May 23 LOW, MOD, and HIGH is a relative ranking of disease severity at each location. Other diseases noted: SC=Stem Canker, CLB=Cercospora Leaf Blight, SDS=Sudden Death Syndrome;  ‘ – ‘ indicate variety was not tested at that location Disease ratings at RECM: Frogeye leaf spot ranged from 0 – 38% with an average of 13%;  Target spot ranged from 0 – 16% with an average of 11%. Disease ratings at JAX: Frogeye leaf spot ranged from 4 – 31% with an average of 18%; Target spot ranged from 15 – 25% with an average of 19%; other diseases were not rated or noted at this location for this maturity group Disease ratings & yield data compiled by Dr. Heather Kelly from replicated plots at the Research and Education Center at Milan and on-farm location in Jackson. County data provided by Ryan Blair, Ext. Area Specialist, and the extension agents.  

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