Table 14. Mean yields and agronomic characteristics of five Early Maturity Group IV (4.0 – 4.5) Roundup Ready soybean varieties evaluated in six REC tests in Tennessee for three years, 2014 – 2016 (n=18).

//////Table 14. Mean yields and agronomic characteristics of five Early Maturity Group IV (4.0 – 4.5) Roundup Ready soybean varieties evaluated in six REC tests in Tennessee for three years, 2014 – 2016 (n=18).
Variety†Avg. Yield‡ ± Std Err. (n=18) bu/aMoisture § (n=18) %Lodging (n=10) ScoreHeight (n=15) in.Maturity (n=15) DAPLeaf Holding (n=3) ScoreProtein (n=3) %Oil (n=3) %SDS DI (n=1) %SDS DS (n=1) 0 - 9SDS DX (n=1) indexFrogeye (n=3) Score
Average6013.52.0381281.739.522.70.70.70.43.1
Dyna-Gro 31RY45 (RR2)62 ± 114.11.9391301.137.922.80.00.00.01.7
USG 74F53RS (RR2,STS)61 ± 114.12.1401291.541.022.40.00.00.02.8
Dyna-Gro S43RY95 (RR2)61 ± 113.12.3401291.638.623.11.71.00.64.1
Warren Seed DS 4340 R2Y60 ± 113.01.9361272.340.022.50.00.00.03.3
Progeny 4211RY56 ± 113.11.9351272.140.122.51.72.71.53.7

 

† If a trait appears inside parentheses i.e. (RR), then it is not part of the variety name.

‡ All yields are adjusted to 13% moisture.

  • Average moisture at harvest

Lodging = 1 to 5 scale; where 1 = 95% of plants erect; 2.5 = ~50% of plants leaning at angle ≥ 45°; 5 = 95+% of plants leaning at an angle ≥ 45°.

Maturity = days after planting (DAP).

Leaf Holding = 1 to 5 scale; where 1 = no leaves remaining on stems at maturity; 5 = 90+% of leaves remaining on stems at maturity.

Protein & Oil on dry weight basis.

SDS disease ratings were taken at the East Tennessee Research and Education Center on 9/7/2015

DI = disease incidence = percentage of plants with symptoms

DS = disease severity = score of leaf chlorosis and necrosis; 0 = no symptoms; 9 = plant death before normal defoliation due to senescence.

DX = disease index = (DI x DS / 9)

Disease ratings for Frogeye Leaf Spot are from 1-9, where 0=no disease & 10=maximum amount of plant disease or plant death. Ratings were taken at the East Tennessee Research and Education Center on 9/7/2015

and 8/28/2014 and at the Highland Rim Experiment Station on 9/3/2015

2017-05-23T19:46:00+00:00