Table 28. Yields and disease ratings of eight Maturity Group V Glyphosate tolerant soybean varieties in eight County Standard Tests and nine varieties in small plot trials at two locations in Tennessee during 2021
| Summary from County Tests | Summary from Small Plot Research | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg. | On-farm Location in Jackson (JAX) | Research & Education Center at Milan (RECM) | Other Diseases | Soybean Cyst Nematode | ||||||||||
| Yield | Yield (bu/ac) | Frogeye | Target | Brown | Yield (bu/ac) | Frogeye | Target | Brown | ||||||
| MS | Variety | (bu/ac) | *Treated | Non-treated | leaf spot | spot | spot | *Treated | Non-treated | leaf spot | spot | spot | ||
| A | Local Seed 5087X | 59.0 | 67.6 | 56.7 | MOD | LOW | MOD | 54.6 | 55.8 | LOW | NONE | MOD | L | MS |
| AB | DynaGro S52XT91 | 57.7 | 62.5 | 51.9 | MOD | LOW | MOD | 59.0 | 54.2 | LOW | NONE | MOD | SDS | R |
| AB | Local Seed 5009XS | 57.5 | 62.7 | 45.9 | HIGH | NONE | MOD | 52.1 | 50.1 | LOW | NONE | MOD | L | S |
| AB | Asgrow 54XF0 | 55.2 | 64.7 | 53.7 | HIGH | LOW | MOD | 53.3 | 55.6 | LOW | NONE | MOD | R | |
| AB | Progeny 5003XF | 55.0 | 56.8 | 40.9 | HIGH | LOW | MOD | 53.8 | 50.1 | LOW | NONE | MOD | L | S |
| B | Beck’s 5005XF | 53.6 | 56.1 | 42.4 | HIGH | NONE | MOD | 48.3 | 45.5 | LOW | NONE | MOD | SDS | R |
| B | Asgrow 52XF0 | 53.4 | 56.8 | 43.3 | HIGH | NONE | MOD | 57.1 | 52.0 | LOW | NONE | MOD | R | |
| B | AgriGold G5000RX | 52.9 | 59.5 | 52.9 | MOD | LOW | MOD | 52.3 | 51.1 | LOW | NONE | MOD | R | |
| LS4806XS | – | 63.7 | 52.3 | MOD | LOW | MOD | – | – | – | – | – | |||
| Average | 55.5 | 61.2 | 48.9 | 53.8 | 51.8 | |||||||||
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
NONE, LOW, MOD, and HIGH is a relative ranking of disease severity at each location. Other noteS: SDS = Sudden Death Syndrome, L = Lodging
Soybean Cyst Nematode rateds as Resistant (R), Moderately Resistant (MR), Moderately Susceptible (MS), Susceptible (S), or High Susceptible (HS) to HG Type 1.2.5.7/Race 2
Disease ratings at JAX: Frogeye leaf spot ranged from 7 – 55%, averaged 27%; Target spot from 0 – 6%, averaged 2%; Brown spot from 9 – 29%, averaged 16%
Disease ratings at RECM: Frogeye leaf spot ranged from 5 – 13%, averaged 8%; Target spot was not observed; Brown spot from 12 – 21%, averaged 17%
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 vsykes@utk.edu
- Table 1. 2021 Total entry numbers - December 26, 2021
- Table A-35. Mean yields and agronomic data from Memphis, TN, MG-5 - December 23, 2021
- Table A-34. Mean yields and agronomic data from Jackson, TN, MG-5 - December 22, 2021