Table 3. Mean and total dry matter yield (Mg/ha) in 2016 and 2017
Treatments | 2016 | 2017 |
Cut 1 | Cut 2 | Cut 3 | Cut 4 | Total | Cut1 | Cut 2 | Cut 3 | Cut 4 | Total |
N 0 | 4.8b1) | 4.7b | 4.8a | 3.7b | 18.0b | 5.0a | 5.3a | 4.7b | 3.9a | 18.9b |
N 112 | 5.3a | 5.2a | 4.8a | 3.9a | 19.2a | 5.5a | 5.3a | 5.0a | 4.0a | 19.8a |
A | 5.3a | 5.1a | 4.9a | 3.5ab | 18.8a | 5.1ab | 5.2a | 4.8ab | 4.1ab | 19.2a |
LLA | 4.9a | 5.3a | 4.7a | 3.9ab | 18.8a | 5.1ab | 5.0a | 4.8ab | 4.1ab | 19.0a |
RRA | 5.0a | 5.7a | 5.1a | 3.7ab | 19.5a | 4.5ab | 5.4a | 5.0a | 4.2a | 19.1a |
SB | 2.5b | 1.3b | N/A | 4.6a | 8.4b | 3.5b | N/A | 3.9b | 2.8c | 10.2b |
TF | 2.3b | 1.9b | N/A | 4.3ab | 8.5b | 4.4ab | N/A | 4.5ab | 3.4bc | 12.3b |
A + SB | 5.5a | 5.5a | 5.0a | 3.6ab | 19.6a | 5.6ab | 5.5a | 5.1a | 4.2a | 20.4a |
A + TF | 5.7a | 5.5a | 4.8a | 3.7ab | 19.7a | 5.6ab | 5.4a | 5.0a | 4.2a | 20.2a |
LLA + SB | 5.4a | 5.3a | 4.6a | 3.8ab | 19.1a | 5.8a | 4.8a | 4.9ab | 4.3a | 19.8a |
LLA + TF | 5.7a | 5.6a | 4.9a | 3.9ab | 20.1a | 5.5ab | 5.2a | 5.0a | 4.2a | 19.9a |
RRA + SB | 5.9a | 5.5a | 4.4a | 3.6ab | 19.5a | 5.7a | 5.7a | 5.0a | 3.8ab | 20.2a |
RRA + TF | 5.9a | 5.6a | 4.7a | 3.3b | 19.5a | 5.6ab | 5.2a | 4.6ab | 4.0ab | 19.4a |
A + SB + TF | 6.0a | 5.4a | 5.1a | 3.8ab | 20.3a | 5.9a | 5.2a | 5.2a | 4.0ab | 20.3a |
LLA + SB + TF | 5.8a | 5.4a | 4.7a | 3.6ab | 19.5a | 5.3ab | 5.2a | 4.7ab | 3.8ab | 19.0a |
RRA + SB + TF | 5.5a | 5.6a | 4.6a | 3.6ab | 19.3a | 5.7a | 5.3a | 4.7ab | 4.2a | 19.9a |
p-value | | | | | | | | | | |
N | 0.0016 | 0.0347 | 0.8406 | 0.0084 | < .0001 | 0.051 | 0.8537 | 0.0495 | 0.145 | < .0001 |
T | < .0001 | < .0001 | 0.7919 | 0.0315 | < .0001 | 0.0057 | 0.2185 | 0.0075 | < .0001 | < .0001 |
The LSMEANS with same letter are not significantly different at p-value of 0.05 level.
N0, control without fertilizer; N112, nitrogen application 112 kg/ha; A, gunner conventional alfalfa; LLA, low-lignin Hi-Gest 360 LL alfalfa; RRA, roundup ready RR tonica alfalfa; SB, smooth bromegrass; N/A, not applicable; TF, tall fescue; N, nitrogen fertilizer; T, treatment.