Table 16. 2021 MG-4E Liberty Link Disease Tests

Table 16. Yields and disease ratings of six Maturity Group IV Early (4.0-4.5) Glufosinate tolerant soybean varieties in six County Standard Tests and 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-beansSoybean Cyst Nematode
YieldYield (bu/ac)FrogeyeTargetBrownYield (bu/ac)FrogeyeTargetBrownYield (bu/ac)
MSVariety(bu/ac)*TreatedNon-treatedleaf spotspotspot*TreatedNon-treatedleaf spotspotspot*TreatedNon-treated
ADynaGro S45ES10*62.862.755.0MODLOWLOW53.251.7MODNONEMOD35.236.7
ABNK 45V9E360.961.955.7LOWNONELOW58.357.3NONENONEMOD38.036.7R
ABBeck’s 4320E360.458.755.4LOWLOWLOW53.953.7LOWNONEMOD37.333.0
ABCDynaGro S43EN6158.357.855.0NONENONELOW51.750.5LOWNONEMOD33.831.7R
BCStine 43EB2055.757.952.1LOWLOWLOW53.851.5LOWNONEMOD35.536.3R
CUSG 7431ET53.159.953.4NONENONELOW49.851.9LOWNONEMOD32.428.3R

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. 4

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 – 6%, averaged 2%; Target spot  from 0 – 2%, averaged 1%; Brown spot  from 7 – 12%, averaged 9% 

Disease ratings at RECM: Frogeye leaf spot ranged from 0 – 6%, averaged 2%; Target spot was not observed; Brown spot  from 10 – 16%, averaged 13%

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

Virginia Sykes
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