Table 2. Mean yield, agronomic traits, and feed quality characteristics of five corn hybrids evaluated for silage in small plot replicated trials at four REC locations in Tennessee during 2019. Analysis included hybrid performance over a 1 yr (2018), 2 yr (2018-2019), and 3 yr (2017-2019) period.

HybridHerbicide Pkg.‡Insect Pkg.‡Avg. Yield Dry Weight
(tons/acre)
1 yr
MS
Avg. Yield Dry Weight
1 yr
Avg. Yield Dry Weight
(tons/acre)
2 yr
MS Avg. Yield Dry Weight
2 yr
Avg. Yield Dry Weight
(tons/acre)
3 yr
MS
Avg. Yield Dry Weight
3 yr
Avg. Yield 65% Moisture
(tons/acre)
1 yr
MS
Avg. Yield 65% Moisture
1 yr
Avg. Yield 65% Moisture
(tons/acre)
2 yr
MS
Avg. Yield 65% Moisture
2 yr
Avg. Yield 65% Moisture
(tons/acre)
3 yr
MS
Avg. Yield 65% Moisture
3 yr
Milk/ton§
(lbs/ton)
1 yr
MS
Milk/ton§
1 yr
Milk/ton§
(lbs/ton)
2 yr
MS
Milk/ton§
2 yr
Milk/ton§
(lbs/ton)
3 yr
MS
Milk/ton§
3 yr
Milk/acre§
(lbs/acre)
1 yr
MS Milk/acre§
1 yr
Milk/acre§
(lbs/acre)
2 yr
MS Milk/acre§
2 yr
Milk/acre§
(lbs/acre)
3 yr
MS Milk/acre§
3 yr
Moisture at Harvest
(%)
1 yr
MS
Moisture at Harvest
1 yr
Moisture at Harvest
(%)
2 yr
MS
Moisture at Harvest
2 yr
Moisture at Harvest
(%)
3 yr
MS
Moisture at Harvest
3 yr
Plant Height
(inches)
1 yr
MS
Plant Height
1 yr
Plant Height
(inches)
2 yr
MS
Plant Height
2 yr
Plant Height
(inches)
3 yr
MS
Plant Height
3 yr
Ear Height
(inches)
1 yr
MS
Ear Height
1 yr
Ear Height
(inches)
2 yr
MS
Ear Height
2 yr
Ear Height
(inches)
3 yr
MS
Ear Height
3 yr
Lodging
(%)
1 yr
MS
Lodging
1 yr
Lodging
(%)
2 yr
MS
Lodging
2 yr
Lodging
(%)
3 yr
MS
Lodging
3 yr
CP
(% dm)
1 yr
MS
CP
1 yr
CP
(% dm)
2 yr
MS
CP
2 yr
CP
(% dm)
3 yr
MS
CP
3 yr
NDF
(% dm)
1 yr
MS
NDF
1 yr
NDF
(% dm)
2 yr
MS
NDF
2 yr
NDF
(% dm)
3 yr
MS
NDF
3 yr
30h IV NDFD
(% of NDF)
1 yr
MS
30h IV NDFD
1 yr
30h IV NDFD
(% of NDF)
2 yr
MS
30h IV NDFD
2 yr
30h IV NDFD
(% of NDF)
2 yr
MS
30h IV NDFD
2 yr
Starch
(% dm)
1 yr
MS
Starch
1 yr
Starch
(% dm)
2 yr
MS
Starch
2 yr
Starch
(% dm)
3 yr
MS
Starch
3 yr
ADF
(% dm)
1 yr
MS
ADF
1 yr
ADF
(% dm)
2 yr
MS
ADF
2 yr
ADF
(% dm)
3 yr
MS
ADF
3 yr
TDN
(% dm)
1 yr
MS
TDN
1 yr
TDN
(% dm)
2 yr
MS
TDN
2 yr
TDN
(% dm)
3 yr
MS
TDN
3 yr
NEL
(Mcals/lb)
1 yr
MS
NEL
1 yr
NEL
(Mcals/lb)
2 yr
MS
NEL
2 yr
NEL
(Mcals/lb)
3 yr
MS
NEL
3 yr
Augusta A9967RR,LL3000GT8.5A24A3143AB26590A64A110A46A0.27.6A45.1AB53.9B28.0A25.0AB68.7AB0.68AB
Croplan 6027RRVT2P8.5A24A3040BC25629A63A109A39B0.27.8A47.2A53.8B23.7B26.1A67.3BC0.67BC
Augusta A7768***RR,LL3110GT8.5A8.3A8.5A24A24A24A3259A3131A3130A27611A26122A26630A65A62A64A110A114A118A40B44B44B0.20.90.97.9A7.5A7.4A43.5B43.9B46.6B56.6A51.5A53.5A27.4A28.1A26.0A23.8B24.5B26.3B70.5A69.1A69.6A0.70A0.68A0.67A
Croplan 5900***RRVT2P8.4A8.6A8.7A24A25A25A2959C2899B2941B24654A24855A25672A64A61A64A109A113A115A46A49A48A0.40.20.37.5A7.2AB7.4A47.5A46.8A49.4A54.4B49.5B52.4A22.9B24.7B22.5B26.4A26.4A28.4A66.4C66.0B67.1B0.65C0.64B0.65B
Croplan 5700**RRVT2P8.3A8.2A24A23A2989C2884B24886A23578A65A63A112A115A44A49A0.20.27.5A7.0B45.9AB47.0A53.8B49.1B24.3B24.3B25.3AB26.4A66.8BC65.8B0.66C0.64B
Average8.48.48.62424253078297130362587424852261516462641101141164347460.20.40.67.77.27.445.945.948.054.550.053.025.225.724.225.325.727.467.967.068.40.670.650.66
Standard Error0.50.30.4111124123701454107211361335441420.60.50.31.51.42.71.74.93.81.71.82.61.01.02.01.71.51.10.020.020.01
L.S.D..05N.S.N.S.N.S.N.S.N.S.N.S.152118100N.S.N.S.N.S.N.S.N.S.N.S.N.S.N.S.N.S.322N.S.0.3N.S.2.52.42.11.91.9N.S.2.83.02.41.81.71.52.01.61.40.020.020.01
C.V.13121213121267715151634475576777679947613202191111444454.67
Plots per entry (reps x locs.)122436122436122436122436122436122436122436122436122436122436122436122436122436122436122436

* Hybrids marked with an asterisk were in the top performing “A” group for yield within two (**) or three (***) consecutive years of the previous three year evaluation period.

† For a full description of abbreviated biotech traits, see table 5.

‡ Hybrids that have any MS letter in common, within a column, are not significantly different at the 5% level of probability using a least signficiant difference (LSD) mean separation test.

§ Based on University of Wisconsin Milk2006 software program. .

‖ Lodging values do not typically follow a normal distribution, therefore statistical tests to compute LSD were not performed and only mean values are reported.

¶ Quality values were calculated on a 100% dry matter (DM) basis

CP = Crude Protein, NDF = Neutral Detergent Fiber, 30h IV NDFD = Neutral Detergent Fiber Digestibility, ADF = Acid Detergent Fiber, TDN = Total Digestible Nutrients, NEL = Net Energy for Lactation

Virginia Sykes

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Virginia Sykes vsykes@utk.edu
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