Table 20. 2018 MG-4L Roundup Ready Disease Tests

Table 20. Yields and disease ratings of 27 Maturity Group IV Late (4.6-4.9) Roundup Ready soybean varieties in 11 County Standard Tests and in small plot trials at two Research and Education Centers and one on-farm location in Tennessee during 2018

Summary from County TestsSummary from Small Plot Research
Research and Education Center at Milan (RECM)West TN Research and Education CenterOn-farm Location in Jackson (JAX)
MSVarietyAvg. Yield (bu/ac)*TreatedNon-treatedFrogeye leaf spotTarget SpotOther Diseases*TreatedNon-treated*TreatedNon-treatedFrogeye leaf spotTarget Spot
AAsgrow 46X661.248.551.2MODLOWCLB, SDS33.
ABBeck’s 4991X260.650.244.8MODLOWCLB35.431.953.348.4LOWLOW
ABDyna-Gro 48XT5660.348.745.7LOWMODCLB, SDS36.233.756.345.2LOWLOW
ABCProgeny 479959.951.750.4LOWLOWCLB36.434.052.544.9LOWLOW
ABCLocal Seed 496859.557.154.7HIGHLOWCLB, SDS33.530.953.445.6MODLOW
ABCAsgrow 47X659.349.749.0LOWMODCLB34.332.144.044.4LOWMOD
ABCWarren Seed BG 491158.834.432.6LOWMODCLB, SC (HIGH)41.038.543.636.0LOWMOD
ABCDArmor 46D6358.754.950.1LOWMODCLB32.430.251.142.1LOWMOD
ABCDDyna-Gro 49XS7658.554.652.6MODLOWCLB39.434.253.245.1MODLOW
ABCDELG 484558.254.150.8MODLOWCLB32.327.953.147.5LOWLOW
ABCDEFAgriGold 468557.752.349.8LOWHIGHSC34.732.043.837.5LOWMOD
ABCDEFArmor 46D0857.649.246.6LOWLOWCLB34.633.149.445.2LOWLOW
ABCDEFProgeny 462057.6CLB38.833.246.636.5LOWLOW
ABCDEFUSG 749657.6CLB36.433.454.845.7MODLOW
ABCDEFGoSoy 48X1856.548.144.8LOWMODCLB, SDS39.535.146.741.8LOWLOW
ABCDEFProgeny 485156.544.546.5LOWLOWCLB, SDS33.631.239.238.8LOWLOW
ABCDEFTerral REV 492756.544.543.6LOWLOWCLB36.028.847.642.3LOWLOW
BCDEFTerral REV 46X456.350.751.8LOWLOWCLB39.935.048.245.6LOWLOW
BCDEFWarren Seed BG 484256.351.951.7LOWHIGHSC38.634.439.735.4LOWHIGH
BCDEFBeck’s 4669X256.245.642.6LOWMODSC33.529.538.238.5LOWHIGH
ABCDEFLocal Seed 467756.2CLB, SDS33.731.851.041.6LOWLOW
BCDEFAsgrow 49X656.156.250.3LOWHIGHSDS, SC38.335.845.038.1LOWHIGH
CDEFGNK S48-R2X55.351.545.2HIGHLOWCLB34.532.151.444.1HIGHLOW
CDEFGWarren Seed BG 471055.153.152.6MODLOWCLB37.535.953.647.7LOWLOW
DEFGUSG 748753.951.252.6LOWHIGHSC38.833.339.430.2LOWMOD
EFGCroplan 4810S53.445.644.2LOWMODSC36.231.738.235.0LOWMOD
GLG 471051.148.447.5LOWMODCLB, SC30.929.636.835.8LOWHIGH

YLD= Avg. Yield @ 15% 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: Chester, Coffee, Crockett, Gibson, Giles, Henry, Lake, Madison, Marion, McCracken KY, Trousdale

*Treated plots sprayed with Quadris TOP SBX @ 7 oz./Acre + 0.25% Induce @ R3 growth stage. RECM varieties planted June 5, JAX planted June 14, and WTREC planted after wheat June 14.

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 – 26% with an average of 3%; Target spot ranged from 0 – 12% with an average of 3%.

Disease ratings at JAX: Frogeye leaf spot ranged from 0 – 25% with an average of 3%; Target spot ranged from 0 – 28% with an average of 6%.

Disease ratings at WTREC: Disease pressure was too low (<5%) at this location to take ratings.

Disease ratings & yield data compiled by Dr. Heather Kelly from replicated plots at the Research and Education Center at Milan, the West Tennessee Research and Education Center, and on-farm location in Jackson.

County data provided by Ryan Blair, Ext. Area Specialist, and the extension agents.

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