Table 13-a. Location comparison of mean cover of 60 cover crop varieties evaluated in small plot replicated trials at three University of Tennessee AgResearch and Education Center locations in Tennessee during 2019-2020.
Variety Common Name Group Canopy Cover (%)
Nov Feb
Avg. RECM MTREC ETREC Avg. RECM MTREC ETREC
Brassicas
Impact Collards Brassica 4 O-R 2 S-X 3 W-Z 6 J-O 13 M-Q 18 M-V 11 S-W 11 N-T
Extender Hyb. Brassica Brassica 4 L-P 3 L-U 3 YZ 6 J-L 15 L-P 21 J-R 9 VW 15 K-T
Viva Hyb. Brassica Brassica 14 E-H 6 F-Q 6 M-W 30 A-E 29 E-G 36 GH 12 R-W 39 D-I
Vivant Hyb. Brassica Brassica 10 H-K 6 C-N 5 T-Z 18 F-J 17 H-O 21 K-S 12 R-W 18 J-T
Aerifi Radish Brassica 11 G-J 5 I-R 5 S-Z 23 A-G 24 E-K 18 M-U 10 U-W 44 D-H
Digger Radish Brassica 10 F-I 6 D-N 4 S-Z 18 C-I 24 E-K 23 I-P 10 T-W 39 D-I
Driller Radish Brassica 7 H-L 5 E-Q 5 R-Z 11 I-K 23 E-L 36 GH 11 S-W 24 H-R
SERALPHA Radish Brassica 7 I-N 4 J-S 3 Z 15 E-J 27 E-G 22 J-Q 8 W 49 C-E
SERWF19 Radish Brassica 8 H-K 4 G-Q 3 YZ 17 D-I 24 E-L 21 J-Q 11 S-W 38 D-J
Smart Radish Brassica 14 D-G 10 A-J 12 I-R 21 B-I 25 E-I 27 G-M 10 VW 38 D-J
Jackpot Turnip Brassica 8 H-L 9 B-L 4 W-Z 11 J-L 16 K-O 15 N-W 10 U-W 23 I-S
Average 8.8 5.5 5 16 21 23 10 31
Min 3.8 2 3 6 13 15 8 11
Max 14.3 9.7 12 30 29 36 12 49
Range 10.4 7.7 9 24 16 21 4 38
† Varieties that have any MS letter in common are not significantly different (Fisher’s Protected LSD, P<0.05). Mean separation was performed across all entries. Varieties within the “A group” were top performers across all entries and mean separation letters of these entries are highlighted in dark orange.
For ease of viewing, the table is broken into functional groups (brassicas, cereals, legumes). Mean values for top performers within each functional group are highlighted in light orange (50th – 75th percentile) and dark orange (> 75th percentile).
Table 13-b. Location comparison of mean biomass of 60 cover crop varieties evaluated in small plot replicated trials at three University of Tennessee AgResearch and Education Center locations in Tennessee during 2019-2020.
Variety Common Name Group Canopy Cover (%)
Nov Feb
Avg. RECM MTREC ETREC Avg. RECM MTREC ETREC
Cereals
Centurion Annual Ryegrass Cereal 4 K-P 3 L-U 5 N-Y 4 J-O 26 E-G 34 G-I 20 M-R 23 I-S
Lowboy Annual Ryegrass Cereal 3 N-Q 2 S-X 4 V-Z 4 J-O 16 J-O 21 J-Q 13 P-W 13 L-T
140760 Barley Cereal 23 A-D 18 AB 8 I-R 42 A-D 23 E-L 23 J-P 14 P-W 33 E-L
140789 Barley Cereal 24 A-D 15 A-E 11 D-L 47 A-D 27 E-G 21 K-R 21 M-Q 39 D-I
140797 Barley Cereal 28 A-C 19 A-C 13 C-J 53 AB 27 E-G 26 G-M 19 M-U 37 D-J
SB255 Barley Cereal 22 A-D 14 A-F 15 A-D 38 A-D 22 G-M 22 J-Q 21 M-R 22 I-S
Secretariat Barley Cereal 15 C-E 13 A-G 10 D-L 22 A-H 22 F-L 24 I-O 18 M-V 25 F-Q
Bates RS4 Cereal Rye Cereal 33 A 17 A-C 21 A 61 A 26 E-G 22 J-Q 20 M-S 37 D-J
Elbon (1) Cereal Rye Cereal 28 A-C 14 A-H 14 A-G 57 A 26 E-G 24 I-N 19 M-S 35 D-K
Elbon (2) Cereal Rye Cereal 29 AB 16 A-D 19 AB 52 A-C 26 E-G 26 H-M 26 J-M 27 F-O
Goku Cereal Rye Cereal 25 A-C 16 A-D 18 A-C 41 A-D 22 E-L 20 K-T 19 M-T 28 F-N
NF95319B Cereal Rye Cereal 26 A-C 12 A-I 20 AB 46 A-D 25 E-J 29 G-L 22 M-P 22 I-S
NF97325 Cereal Rye Cereal 20 B-E 11 B-M 14 A-G 36 A-D 26 E-G 19 L-T 19 M-T 38 D-I
NF99362 Cereal Rye Cereal 24 A-C 14 A-F 15 A-D 43 A-D 25 E-G 24 I-O 20 M-S 33 E-L
Wintergrazer 70 Cereal Rye Cereal 21 A-D 11 A-J 14 A-F 38 A-D 24 E-K 24 I-N 19 M-U 29 E-N
Yankee Cereal Rye Cereal 30 AB 22 A 15 A-E 52 A-C 22 E-L 19 K-T 18 M-V 30 E-N
Bob Oat Cereal 22 A-D 18 AB 10 D-L 39 A-D 26 E-G 23 I-P 15 N-W 41 D-I
Cosaque Oat Cereal 23 A-D 16 A-D 14 B-I 39 A-D 25 E-H 21 J-Q 16 N-W 39 D-I
Hilliard Wheat Cereal 16 B-E 11 A-I 10 D-K 27 A-F 26 E-G 22 J-Q 25 J-M 29 E-N
Liberty 5658 Wheat Cereal 15 C-F 10 A-K 14 A-H 21 B-I 23 E-L 23 I-P 22 M-Q 24 G-R
Average 21.6 13.5 13 38 24 23 19 30
Min 3.4 1.8 4 4 16 19 13 13
Max 32.8 22.4 21 61 27 34 26 41
Range 29.5 20.6 16 57 11 15 13 27
† Varieties that have any MS letter in common are not significantly different (Fisher’s Protected LSD, P<0.05). Mean separation was performed across all entries. Varieties within the “A group” were top performers across all entries and mean separation letters of these entries are highlighted in dark orange.
For ease of viewing, the table is broken into functional groups (brassicas, cereals, legumes). Mean values for top performers within each functional group are highlighted in light orange (50th – 75th percentile) and dark orange (> 75th percentile).
Table 13-c. Location comparison of mean biomass of 60 cover crop varieties evaluated in small plot replicated trials at three University of Tennessee AgResearch and Education Center locations in Tennessee during 2019-2020.
Variety Common Name Group Canopy Cover (%)
Nov Feb
Avg. RECM MTREC ETREC Avg. RECM MTREC ETREC
Legumes
FIXatioN Clover, Balansa Legume 3 ST 1 V-Z 9 J-S 0 RS 12 N-Q 10 T-X 21 M-R 7 O-T
Paradana Clover, Balansa Legume 2 TU 0 (-A 5 O-Y 0 ST 9 O-Q 10 S-X 13 P-W 3 ST
Viper Clover, Balansa Legume 2 ST 0 Z-A 6 M-W 1 PQ 16 I-O 10 S-X 18 M-V 21 I-T
Balady Clover, Berseem Legume 1 U 1 X-A 2 (-A 0 T 5 Q 3 X 9 VW 1 T
Frosty Clover, Berseem Legume 2 T 1 V-Z 4 T-Z 0 ST 13 N-Q 12 Q-X 22 M-Q 4 R-T
AU Sunrise Clover, Crimson Legume 6 I-M 3 N-V 8 I-R 7 I-K 27 E-G 15 N-W 36 F-H 31 E-N
Bolsena Clover, Crimson Legume 5 I-N 3 L-U 7 I-R 5 J-M 26 E-G 19 L-T 36 F-H 22 I-S
Dixie Clover, Crimson Legume 6 H-L 4 H-R 7 J-T 6 J-L 23 E-L 10 S-X 34 F-K 25 F-P
Kentucky Pride Clover, Crimson Legume 5 J-O 3 M-V 8 I-Q 4 J-O 24 E-K 11 R-X 33 F-L 30 E-N
SECCM18 Clover, Crimson Legume 7 I-N 2 P-V 9 F-M 10 I-K 28 E-G 13 P-X 39 E-G 32 E-L
White Cloud Clover, Crimson Legume 6 I-L 3 L-U 9 E-M 6 J-L 21 G-N 13 O-X 34 F-J 15 K-T
Big Red Clover, Red Legume 3 Q-S 1 W-A 6 O-Y 1 N-Q 7 PQ 6 WX 11 S-W 5 Q-T
Blaze Clover, Red Legume 3 O-R 2 O-V 5 P-Y 2 O-Q 9 O-Q 8 U-X 13 Q-W 8 O-T
GA9909 Clover, Red Legume 3 RS 0 Z-A 5 M-X 2 L-Q 11 O-Q 7 WX 14 P-W 11 M-T
VNS Clover, Red Legume 3 RS 4 U-Y 4 W-Z 1 QR 9 O-Q 7 V-X 15 O-W 6 P-T
VNS Vetch, Common Legume 4 M-Q 2 Q-W 5 Q-Y 3 K-Q 27 E-G 30 G-K 8 W 45 D-G
AU Merit Vetch, Hairy Legume 7 I-N 3 R-X 8 H-O 8 G-J 75 A 72 AB 69 A 85 A
Patagonia Inta Vetch, Hairy Legume 5 I-N 4 K-T 7 J-T 5 J-N 71 A 77 A 61 AB 73 AB
Purple Bounty Vetch, Hairy Legume 3 P-R 1 T-X 4 X-Z 3 K-P 50 BC 47 EF 49 CD 55 B-D
Villana Vetch, Hairy Legume 2 P-S 2 S-X 4 U-Z 2 L-Q 40 D 48 E 35 F-I 37 D-J
WinterKing Vetch, Hairy Legume 3 M-Q 2 N-V 4 T-Z 3 K-P 53 B 65 BC 53 BC 41 D-I
Namoi Vetch, Woolypod Legume 3 RS 0 Y-A 5 Q-Y 3 M-Q 52 B 63 B-D 26 I-M 68 A-C
Double OO Winter Pea Legume 7 G-K 6 D-O 8 I-R 7 I-K 31 E 37 FG 24 K-N 32 E-M
Survivor Winter Pea Legume 7 G-K 5 F-Q 9 G-N 7 I-K 46 B-D 60 CD 32 G-L 45 D-F
VNS (1) Winter Pea Legume 6 H-L 3 L-U 8 I-P 7 I-K 41 D 48 E 42 D-F 33 E-L
VNS (2) Winter Pea Legume 7 G-K 6 D-N 6 L-V 8 H-K 43 CD 61 CD 24 L-O 44 D-H
Windham Winter Pea Legume 7 G-J 4 G-Q 8 I-R 10 E-J 31 EF 32 G-J 22 M-Q 38 D-J
WyoWinter (1) Winter Pea Legume 5 H-L 4 G-Q 7 K-U 5 J-M 40 D 56 C-E 27 H-M 37 D-J
WyoWinter (2) Winter Pea Legume 7 G-J 5 E-P 9 E-M 7 H-K 43 CD 53 DE 46 C-E 31 E-N
Average 4.4 2.6 6 4 31 31 30 31
Min 1 0.2 2 0 5 3 8 1
Max 7.3 5.6 9 10 75 77 69 85
Range 6.4 5.4 7 10 71 74 62 83
† Varieties that have any MS letter in common are not significantly different (Fisher’s Protected LSD, P<0.05). Mean separation was performed across all entries. Varieties within the “A group” were top performers across all entries and mean separation letters of these entries are highlighted in dark orange.
For ease of viewing, the table is broken into functional groups (brassicas, cereals, legumes). Mean values for top performers within each functional group are highlighted in light orange (50th – 75th percentile) and dark orange (> 75th percentile).
Table 13-d. Summary statistics for location comparison of mean biomass of 60 cover crop varieties evaluated in small plot replicated trials at three University of Tennessee AgResearch and Education Center locations in Tennessee during 2019-2020.
Group Canopy Cover (%)
Nov Feb
Avg. RECM MTREC ETREC Avg. RECM MTREC ETREC
Brassicas
Average 8.8 5.5 5 16 21 23 10 31
Min 3.8 2 3 6 13 15 8 11
Max 14.3 9.7 12 30 29 36 12 49
Range 10.4 7.7 9 24 16 21 4 38
Cereals
Average 21.6 13.5 13 38 24 23 19 30
Min 3.4 1.8 4 4 16 19 13 13
Max 32.8 22.4 21 61 27 34 26 41
Range 29.5 20.6 16 57 11 15 13 27
Legumes
Average 4.4 2.6 6 4 31 31 30 31
Min 1 0.2 2 0 5 3 8 1
Max 7.3 5.6 9 10 75 77 69 85
Range 6.4 5.4 7 10 71 74 62 83
Across Groups
Average 10.9 6.8 8 18 27 27 23 30
Standard Error 0.1 0.3 2 5 0 1 2 3
Min 1 0.2 2 0 5 3 8 1
Max 32.8 22.4 21 61 75 77 69 85
Range 31.9 22.2 19 61 71 74 62 83
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