Table 23. 2021 MG-4L Liberty Link Disease Tests

Table 23. Yields and disease ratings of five Maturity Group IV Late (4.6-4.9) Glufosinate tolerant soybean varieties in six County Standard Tests and six varieties in small plot trials at two locations in Tennessee during 2021.

Summary from County TestsSummary from Small Plot Research
Avg.On-farm Location in Jackson (JAX)Research & Education Center at Milan (RECM)Wheat-beansOther DiseasesSoybean Cyst Nematode
YieldYield (bu/ac)FrogeyeTargetBrownYield (bu/ac)FrogeyeBrownYield (bu/ac)
MSVariety(bu/ac)*TreatedNon-treatedleaf spotspotspot*TreatedNon-treatedleaf spotspot*TreatedNon-treated
ADynaGro S49EN7960.957.952.7MODLOWLOW53.150.2NONELOW39.636.3SDSR
AStine 46EB2260.855.548.9MODLOWLOW50.948.8MODLOW32.824.7MR
AProgeny 4775E3S59.456.443.8HIGHLOWLOW53.146.6MODLOW38.435.9R
AStine 48EB2056.155.249.5LOWLOWLOW51.350.9LOWLOW32.727.8SDSR
AStine 47EB3255.757.450.4NONENONELOW51.851.6NONELOW35.931.8SDSR

Yield adjusted to 13% moisture

MS= Varieties that have any MS letter in common are not statistically different in yield (based on 95% confidence)

*Treated plots sprayed with Miravis Top @13.7 fl oz/a + 0.25% Induce @ R3 growth stage

JAX varieties planted May 24, sprayed Aug. 3, and harvested Oct. 19

RECM varieties planted May 25, sprayed Aug. 2, and harvested Nov. 5

Wheat-beans varieteis planted June 24, sprayed Aug. 27, and harvested Nov. 9

NONE, LOW, MOD, and HIGH is a relative ranking of disease severity at each location. Other diseases noted: SDS = Sudden Death Syndrome

Soybean Cyst Nematode rateds as Resistant (R), Moderately Resistant (MR), Moderately Susceptible (MS), Susceptible (S), or High Susceptible (HS) to HG Type 2

Disease ratings at JAX: Frogeye leaf spot ranged from 0 – 54%, averaged 21%; Target spot  from 0 – 3%, averaged 1%; Brown spot  from 8 – 16%, averaged 12%

Disease ratings at RECM: Frogeye leaf spot ranged from 0 – 12%, averaged 6%; Target spot not observed; Brown spot  from 8 – 14%, averaged 11%

Disease ratings & yield data compiled by Dr. Heather Kelly, Rachel Guyer, and Wesley Crowder from replicated plots at 2 locations

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

Soybean Cyst Nematode data provided by Dr. Lesley Schumacher, USDA Research Plant Pathologist

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