Table 28. 2019 MG-5E Roundup Ready Disease Tests

Table 28. Yields and disease ratings of 11 Maturity Group V Early (5.0-5.5) Roundup Ready soybean varieties in 8 County Standard Tests and in small plot trials at one Research and Education Center and one on-farm location in Tennessee during 2019.

Summary from County TestsSummary from Small Plot Research      
Average58.440.142.145.642.9
Research & Education Center at Milan (RECM)On-farm Location in Jackson (JAX)
RECM – YLDJAX – YLD
MSVarietyAvg. Yield (bu/ac)*TreatedNon-treatedFrogeye leaf spotTarget Spot*TreatedNon-treatedFrogeye leaf spotTarget SpotSDS
AAsgrow 53X064.038.541.4MODHIGH48.346.2HIGHHIGH
ABAsgrow 53X9**62.438.244.0LOWLOW47.347.8LOWLOW
ABLocal Seed 5386X62.039.541.1LOWLOW48.744.4MODLOWLOW
ABAgriGold G5000RX61.039.144.3MODLOW51.947.1HIGHLOW
ABLocal Seed 5087X**60.437.135.6MODLOW44.144.0MODLOWLOW
ABAsgrow 52X958.738.843.6MODLOW53.346.4HIGHLOW
ABCAsgrow 55X756.843.544.4MODLOW44.839.3LOWLOWLOW
ABCAsgrow 55X056.640.940.9HIGHLOW36.733.7HIGHLOW
ABCGoSoy 52X1955.543.340.4LOWLOW36.434.5LOWLOWHIGH
BCProgeny 5016RXS55.242.145.6MODLOW48.546.4HIGHLOW
CCredenz CZ5299X49.641.141.7MODLOW

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.  

 

*Treated plots sprayed with Quadris TOP SBX @ 7 oz./Acre + 0.25% Induce @ R3 growth stage.

RECM varieties planted May 21, sprayed Aug 19, and harvested Oct 23.

JAX varieties planted May 28, sprayed Aug 13, and harvested Oct 3.

 

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 – 19% with an average of 8% and Target spot was only reported on Asgrow 53X0.

Disease ratings at JAX: Frogeye leaf spot ranged from 0 – 17% with an average of 6% and Target spot was only observed on Asgrow 53X0 and SDS disease index ranged from 0 – 20, with an average of 2 disease index.

 

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.

Virginia Sykes

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