Table 23. Early Nov. Planted, Knoxville, TN, Forage Quality

Table 23-a. By location mean forage quality of 36 cover crop varieties and 8 mixes planted in early Nov. 2020, in small plot replicated trials, at the Middle Tennessee AgResearch and Education Center, in Knoxville, Tennessee, and evaluated from Fall 2020 to Spring 2021.

VarietyCommon NameCP¶   ADF¶   NDF¶   
AprMayAprMayAprMay
Cereals
Bates RS4Cereal Rye10.7LM8.2M32.4A38.6AB62.4A69.7A
ElbonCereal Rye11.5J-M8.8LM28.9B-E36.8A-C56.5B68.2A
NF95319BCereal Rye10.0M7.5M32.4A39.7A60.9AB72.1A
NF97325Cereal Rye12.6I-M7.7M30.5A-C39.8A58.9AB70.4A
NF99362Cereal Rye10.9K-M8.7LM31.4AB39.0A61.5AB70.8A
YankeeCereal Rye14.9F-I9.9LM24.9F-K29.5GH48.8C58.7B
TN1902Wheat13.8H-K11.0KL26.4E-I27.2HI48.7C52.5CD
Legumes
ParadanaClover, Balansa13.2I-L15.9F-J31.3AB29.9E-H37.5E-G33.1HI
TaipanClover, Balansa13.7H-L15.0H-J30.5A-C30.2F-H41.4DE35.4HI
ViperClover, Balansa15.4E-I17.0E-H30.5A-D30.8D-H37.4E-H34.8G-I
LightningClover, Berseem18.2E21.3CD30.0A-D25.1IJ39.0E-G30.4IJ
DixieClover, Crimson18.4DE18.4E-G23.1I-L27.0HI28.6IJ30.6IJ
AU MeritVetch, Hairy24.6AB25.1B21.5KL24.1IJ24.7JK26.3JK
PatagoniaVetch, Hairy23.9AB21.8CD24.2G-L27.0HI27.6IJ30.5IJ
WinterKingVetch, Hairy26.7A28.4A21.0L21.8J22.1K23.0K
Brassicas
VivantHybrid (turnip x rapeseed)16.3E-H13.1JK24.9F-K33.8C-F32.2HI43.3EF
AerifiRadish14.8F-I13.2I-K27.3C-G34.5B-D34.7GH42.2EF
Jackpot Turnip14.5G-J14.4H-J28.8B-E33.9C-E37.2E-H42.9EF
Mixes
Bates RS4 (20%) + Dixie (80%)Cereal Rye + Crimson Clover13.4H-L12.8JK29.3A-E36.7A-C48.0C55.3BC
Bates RS4 (20%) + AU Merit (80%)Cereal Rye +
Hairy Vetch
18.8C-E18.2E-G26.2E-J31.4D-G39.9EF44.5EF
Bates RS4 (10%) + Dixie (90%)Cereal Rye + Crimson Clover15.1F-I15.3H-J28.2B-F33.5C-F45.6CD47.2DE
Bates RS4 (10%) + AU Merit (90%)Cereal Rye +
Hairy Vetch
17.8EF18.9D-F26.9D-H30.6D-H41.5DE43.7EF
Yankee (20%) +
Dixie (80%)
Cereal Rye + Crimson Clover17.0E-G16.0G-I22.8J-L29.1GH38.4E-G44.3EF
Yankee (20%) +
AU Merit (80%)
Cereal Rye +
Hairy Vetch
21.3B-D19.2DE24.4G-L28.8GH35.2F-H41.3E-G
TN1902 (20%) +
Dixie (80%)
Wheat +
Crimson Clover
17.0E-G16.7E-H25.1F-K27.5HI36.0F-H39.4F-H
TN1902 (20%) +
AU Merit (80%)
Wheat +
Hairy Vetch
21.8BC22.2C23.7H-L24.6IJ34.4GH34.0HI
Cereals
Average12.18.829.635.856.866.1
Min10.07.524.927.248.752.5
Max14.911.032.439.862.472.1
Range4.93.57.512.613.719.6
Legumes
Average19.320.426.527.032.330.5
Min13.215.021.021.822.123.0
Max26.728.431.330.841.435.4
Range13.513.510.39.119.312.3
Brassicas
Average15.213.627.034.134.742.8
Min14.513.124.933.832.242.2
Max16.314.428.834.537.243.3
Range1.81.33.90.85.01.1
Mixes
Average17.817.425.830.339.943.7
Min13.412.822.824.634.434.0
Max21.822.229.336.748.055.3
Range8.49.46.512.113.621.3
Across Groups
Average16.415.627.231.241.545.6
Standard Error4.45.53.45.111.414.9
Min10.07.521.021.822.123.0
Max26.728.432.439.862.472.1
Range16.720.911.418.140.449.1
ANOVA p-values
– Variety<0.001<0.001<0.001<0.001<0.001<0.001
– Location<0.001<0.001N.S.0.014<0.001<0.001
– Variety x Location0.0170.0840.026<0.001<0.001<0.001

† Varieties that have any MS letter in common are not significantly different (Fisher’s Protected LSD, P<0.05). Mean separation letters are highlighted in dark orange for values that are not statistically different from the highest value across all entries within a given trait. Mean values between the 50th and 75th percentile are highlighted in light orange, mean values above the 75th percentile are highlighted in dark orange. § For analysis, values transformed using (value)^2 due to non-normal distribution. Untransformed means and summary statistics are reported. ‡ For analysis, values transformed using log (value+1) due to non-normal distribution. Untransformed means and summary statistics are reported. ‡‡ Non-normal distribution, means reported ¶ Analyzed using near-infrared spectroscopy (NIRS) with the appropriate calibration for each species. Reported on a 100% DM basis. †† Estimated using quality constituents from NIRS inputted into the UGA cover crop nitrogen calculator.

Table 23-b. By location mean forage quality of 36 cover crop varieties and 8 mixes planted in early Nov. 2020, in small plot replicated trials, at the East Tennessee AgResearch and Education Center, in Knoxville, Tennessee, and evaluated from Fall 2020 to Spring 2021.

VarietyCommon NameAsh¶   Fat¶   Lignin¶   
AprMayAprMayApr†May
Cereals
Bates RS4Cereal Rye3.5J2.4HI2.5GH2.1HI4.0F-K5.8D-G
ElbonCereal Rye4.4H-J1.8I2.7E-H2.4F-I3.7J-L5.6D-H
NF95319BCereal Rye4.5H-J1.7I2.4H2.1HI4.0F-K5.8C-F
NF97325Cereal Rye4.3IJ2.8HI2.8D-H2.1I3.9H-L6.0C-E
NF99362Cereal Rye3.9J2.1HI2.6F-H2.2HI4.0G-K6.2CD
YankeeCereal Rye5.8G-I2.8HI3.5AB2.7B-D3.6KL3.5JK
TN1902Wheat6.8E-G3.5H3.0C-E2.6B-F2.9L2.9K
Legumes
ParadanaClover, Balansa8.6A-D9.1A-C3.3A-C2.3F-I7.3AB6.5B-D
TaipanClover, Balansa7.7B-F9.5AB3.1B-E2.4D-I6.1CD6.7BC
ViperClover, Balansa9.2A-C10.6A3.0B-F2.3E-I6.7A-C6.2C-E
LightningClover, Berseem9.2AB9.7AB3.0C-F2.6B-F5.3DE4.7HI
DixieClover, Crimson8.2B-E8.7B-D2.5GH2.1HI4.9E-H5.6D-G
AU MeritVetch, Hairy9.2AB8.3B-E2.9C-H2.9A-C4.5E-K4.9G-I
PatagoniaVetch, Hairy9.4AB8.8B-D2.9C-G2.9A-C5.1D-F5.5D-H
WinterKingVetch, Hairy10.2A8.7B-D3.0B-E3.1A4.5E-K4.2IJ
Brassicas
VivantHybrid (turnip x rapeseed)8.4B-E6.9EF2.9D-H2.4E-I6.7BC8.4A
AerifiRadish8.1B-E7.6C-F3.0B-E2.2HI7.9A8.7A
Jackpot Turnip8.0B-E5.1G3.1A-E2.3G-I7.6AB7.4B
Mixes
Bates RS4 (20%) + Dixie (80%)Cereal Rye + Crimson Clover6.0F-H5.2G2.7E-H2.2HI4.5E-K5.6D-G
Bates RS4 (20%) + AU Merit (80%)Cereal Rye +
Hairy Vetch
7.3C-G6.4FG2.9C-G2.6C-G4.8E-J5.2E-H
Bates RS4 (10%) + Dixie (90%)Cereal Rye + Crimson Clover6.2FG5.5G2.8D-H2.2HI4.3E-K5.7D-G
Bates RS4 (10%) + AU Merit (90%)Cereal Rye +
Hairy Vetch
6.9E-G6.3FG2.9D-H2.7B-F4.8E-I5.1F-I
Yankee (20%) +
Dixie (80%)
Cereal Rye + Crimson Clover7.1D-G5.1G3.5A2.7B-E3.7I-L4.3IJ
Yankee (20%) +
AU Merit (80%)
Cereal Rye +
Hairy Vetch
8.6A-D7.0EF3.0C-E2.8A-C5.1D-F5.0F-I
TN1902 (20%) +
Dixie (80%)
Wheat +
Crimson Clover
8.3B-E6.2FG3.1A-E2.4D-H5.1D-G4.7HI
TN1902 (20%) +
AU Merit (80%)
Wheat +
Hairy Vetch
8.0B-E7.4D-F3.2A-D2.9AB4.6E-K4.3IJ
Cereals
Average4.72.42.82.33.75.1
Min3.51.72.42.12.92.9
Max6.83.53.52.74.06.2
Range3.41.81.00.61.23.2
Legumes
Average9.09.23.02.65.55.5
Min7.78.32.52.14.54.2
Max10.210.63.33.17.36.7
Range2.52.30.80.92.72.4
Brassicas
Average8.26.53.02.37.48.1
Min8.05.12.92.26.77.4
Max8.47.63.12.47.98.7
Range0.42.50.20.21.21.3
Mixes
Average7.36.13.02.64.65.0
Min6.05.12.72.23.74.3
Max8.67.43.52.95.15.7
Range2.62.30.80.71.41.4
Across Groups
Average7.26.12.92.55.05.6
Standard Error1.92.70.30.31.31.3
Min3.51.72.42.12.92.9
Max10.210.63.53.17.98.7
Range6.88.91.11.05.05.7
ANOVA p-values
– Variety<0.001<0.001<0.001<0.001<0.001<0.001
– Location<0.001<0.001N.S.N.S.<0.001<0.001
– Variety x Location0.0180.048N.S.N.S.<0.001<0.001

† Varieties that have any MS letter in common are not significantly different (Fisher’s Protected LSD, P<0.05). Mean separation letters are highlighted in dark orange for values that are not statistically different from the highest value across all entries within a given trait. Mean values between the 50th and 75th percentile are highlighted in light orange, mean values above the 75th percentile are highlighted in dark orange. § For analysis, values transformed using (value)^2 due to non-normal distribution. Untransformed means and summary statistics are reported. ‡ For analysis, values transformed using log (value+1) due to non-normal distribution. Untransformed means and summary statistics are reported. ‡‡ Non-normal distribution, means reported ¶ Analyzed using near-infrared spectroscopy (NIRS) with the appropriate calibration for each species. Reported on a 100% DM basis. †† Estimated using quality constituents from NIRS inputted into the UGA cover crop nitrogen calculator.

Virginia Sykes
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