Table 19. Early Nov. Planted, Across Location, Forage Quality

Table 19-a. Across location mean forage quality of 18 cover crop varieties and 8 mixes planted in early Nov. 2020, in small plot replicated trials, at two University of Tennessee AgResearch and Education Center locations, in Tennessee, and evaluated from Fall 2020 to Spring 2021.
VarietyCommon NameCP¶   ADF¶   NDF¶   
AprMayAprMayAprMay
Cereals
Bates RS4Cereal Rye9.5L6.7N31.1AB39.8A59.8A70.5A
ElbonCereal Rye10.8KL6.9N28.2CD39.4AB54.7B71.0A
NF95319BCereal Rye9.5L6.6N31.2AB40.0A58.9A71.8A
NF97325Cereal Rye10.8KL6.6N29.9BC39.8A57.8AB70.1A
NF99362Cereal Rye9.6L7.3MN30.9B39.7A59.5A70.9A
YankeeCereal Rye13.6H-J9.1LM23.5FG33.2D-G45.4CD63.0B
TN1902Wheat13.1IJ9.7KL24.0F28.7J-L45.0CD53.1D
Legumes
ParadanaClover, Balansa14.8G-J15.8GH33.6A29.9H-K39.0EF33.8J-L
TaipanClover, Balansa15.1G-I15.5GH30.4BC30.1H-J38.8E-G35.7I-K
ViperClover, Balansa16.3E-G16.9FG30.9A-C30.6G-J36.8F-I35.0JK
LightningClover, Berseem18.7C-E20.8C-E26.7DE25.1MN34.6HI30.5L-N
DixieClover, Crimson17.6D-F19.0EF23.5F-H28.7J-L29.3JK32.5K-M
AU MeritVetch, Hairy22.7A27.2AB21.3GH24.9MN24.9L26.8NO
PatagoniaVetch, Hairy22.0AB25.7B23.2F-H26.4LM27.2KL29.0M-O
WinterKingVetch, Hairy23.8A28.8A20.9H23.5N23.8L25.4O
Brassicas
VivantHybrid (turnip x rapeseed)15.5F-H13.1IJ24.7EF34.7C-E32.8IJ43.8GH
AerifiRadish15.0G-I12.7IJ27.2D34.3C-F35.1G-I42.7GH
Jackpot Turnip14.7G-J13.4I26.6DE35.7CD35.6F-I45.2FG
Mixes
Bates RS4 (20%) + Dixie (80%)Cereal Rye + Crimson Clover12.7JK11.3JK28.8B-D38.9AB47.6C58.6C
Bates RS4 (20%) + AU Merit (80%)Cereal Rye +
Hairy Vetch
16.6E-G19.0EF27.3D32.5E-H42.7DE45.1FG
Bates RS4 (10%) + Dixie (90%)Cereal Rye + Crimson Clover13.9H-J13.5I27.4D36.9BC44.4CD52.2DE
Bates RS4 (10%) + AU Merit (90%)Cereal Rye +
Hairy Vetch
15.5F-H20.0DE27.4D31.6F-I43.6D43.9GH
Yankee (20%) +
Dixie (80%)
Cereal Rye + Crimson Clover15.6F-H14.4HI21.2GH32.0F-I37.4F-H48.7EF
Yankee (20%) +
AU Merit (80%)
Cereal Rye +
Hairy Vetch
19.9BC21.6CD22.6F-H28.9J-L34.3HI39.8HI
TN1902 (20%) +
Dixie (80%)
Wheat +
Crimson Clover
15.6F-H14.7HI23.1F-H29.7I-K35.7F-I43.5GH
TN1902 (20%) +
AU Merit (80%)
Wheat +
Hairy Vetch
19.7CD22.0C22.9F-H27.5K-M34.2HI37.3IJ
Cereals
Average11.07.628.437.254.467.2
Min9.56.623.528.745.053.1
Max13.69.731.240.059.871.8
Range4.13.17.611.314.718.7
Legumes
Average18.921.226.327.431.831.1
Min14.815.520.923.523.825.4
Max23.828.833.630.639.035.7
Range9.013.212.67.115.110.3
Brassicas
Average15.113.126.234.934.543.9
Min14.712.724.734.332.842.7
Max15.513.427.235.735.645.2
Range0.70.72.51.42.82.5
Mixes
Average16.217.125.132.240.046.2
Min12.711.321.227.534.237.3
Max19.922.028.838.947.658.6
Range7.210.77.711.513.421.2
Across Groups
Average15.515.326.532.440.746.9
Standard Error4.06.53.75.210.615.0
Min9.56.620.923.523.825.4
Max23.828.833.640.059.871.8
Range14.422.212.616.535.946.4
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 appropraite 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 19-b. Across location mean forage quality of 18 cover crop varieties and 8 mixes planted in early Nov. 2020, in small plot replicated trials, at two University of Tennessee AgResearch and Education Center locations, in Tennessee, and evaluated from Fall 2020 to Spring 2021.
VarietyCommon NameAsh¶   Fat¶   Lignin¶   
AprMayAprMayApr†May
Cereals
Bates RS4Cereal Rye2.5K1.9L2.4HI2.0J3.6GH6.0BC
ElbonCereal Rye3.6K1.7L2.7F-H2.1J3.5GH5.9C
NF95319BCereal Rye3.1K1.1L2.3I2.0J3.6GH6.0BC
NF97325Cereal Rye3.4K1.9L2.7F-H1.9J3.7F-H6.2BC
NF99362Cereal Rye3.4K1.6L2.5G-I2.0J3.7F-H6.3BC
YankeeCereal Rye5.5IJ3.0K3.5A2.7B-E3.3HI4.2GH
TN1902Wheat5.4J3.5K3.1BC2.6E-G2.6I3.6H
Legumes
ParadanaClover, Balansa11.5A9.0B-D3.1BC2.3G-I7.2A6.4BC
TaipanClover, Balansa9.9BC9.3A-C3.0CD2.5E-H6.1BC6.5B
ViperClover, Balansa10.8AB9.7AB2.7F-I2.4F-H6.2BC6.3BC
LightningClover, Berseem9.1CD10.2A3.0CD2.8B-D4.9DE4.5E-G
DixieClover, Crimson8.6CD8.5C-E2.7D-G2.3G-I4.6DE6.1BC
AU MeritVetch, Hairy8.1DE8.5C-E2.9C-F2.9AB4.7DE4.9D-F
PatagoniaVetch, Hairy8.5D8.9B-E2.9C-F2.8A-C4.9D5.1DE
WinterKingVetch, Hairy9.2CD9.1BC3.0C-E3.0A4.6DE4.4FG
Brassicas
VivantHybrid (turnip x rapeseed)7.1EF6.1HI2.8D-G2.5E-G5.8C8.3A
AerifiRadish7.1E-G6.3G-I2.7D-G2.1IJ6.6AB7.8A
Jackpot Turnip6.9E-H5.2IJ2.9C-F2.5E-H6.0BC8.2A
Mixes
Bates RS4 (20%) + Dixie (80%)Cereal Rye + Crimson Clover5.5J4.7J2.7D-G2.0J4.3D-G6.0BC
Bates RS4 (20%) + AU Merit (80%)Cereal Rye +
Hairy Vetch
6.5F-J7.1F-H2.8C-F2.5E-H4.6DE5.2D
Bates RS4 (10%) + Dixie (90%)Cereal Rye + Crimson Clover5.4J5.2IJ2.7D-G2.0J4.1E-G6.1BC
Bates RS4 (10%) + AU Merit (90%)Cereal Rye +
Hairy Vetch
5.8H-J7.2FG2.7E-G2.6C-F4.4D-F5.2D
Yankee (20%) +
Dixie (80%)
Cereal Rye + Crimson Clover5.9G-J5.6IJ3.4AB2.6D-G3.0HI4.7D-G
Yankee (20%) +
AU Merit (80%)
Cereal Rye +
Hairy Vetch
7.0E-H8.0D-F3.2BC2.9AB4.1E-G4.9D-F
TN1902 (20%) +
Dixie (80%)
Wheat +
Crimson Clover
6.5F-J5.5IJ3.1C2.3HI4.1E-G5.1D
TN1902 (20%) +
AU Merit (80%)
Wheat +
Hairy Vetch
6.7F-I7.8EF3.1BC2.8A-C4.1E-G4.7D-G
Cereals
Average3.92.12.72.23.45.5
Min2.51.12.31.92.63.6
Max5.53.53.52.73.76.3
Range3.02.41.20.81.12.6
Legumes
Average9.59.22.92.65.45.5
Min8.18.52.72.34.64.4
Max11.510.23.13.07.26.5
Range3.51.60.50.72.62.2
Brassicas
Average7.05.92.82.46.18.1
Min6.95.22.72.15.87.8
Max7.16.32.92.56.68.3
Range0.21.00.10.40.80.6
Mixes
Average6.26.43.02.54.15.2
Min5.44.72.72.03.04.7
Max7.08.03.42.94.66.1
Range1.63.30.70.91.51.4
Across Groups
Average6.76.02.92.44.55.7
Standard Error2.42.90.30.31.21.2
Min2.51.12.31.92.63.6
Max11.510.23.53.07.28.3
Range9.09.01.21.14.64.7
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 appropraite 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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