Table 4. Mean CP concentration (g/kg DM) in 2016 and 2017
Treatments | 2016 | 2017 |
Cut 1 | Cut 2 | Cut 3 | Cut 4 | Average | Cut1 | Cut 2 | Cut 3 | Cut 4 | Average |
N 0 | 170a1) | 127a | 126a | 140a | 141a | 137a | 163a | 143a | 141a | 145a |
N 112 | 175a | 127a | 130a | 131a | 141a | 136a | 161a | 146a | 142a | 145a |
A | 182a | 129a | 151a | 157ab | 155a | 145a | 163a | 147a | 139a | 148ab |
LLA | 199a | 131a | 151a | 167a | 162a | 147a | 158a | 139a | 148a | 148ab |
RRA | 187a | 135a | 141a | 148ab | 153a | 147a | 171a | 142a | 144a | 151ab |
SB | 137bc | 120a | N/A | 65c | 107b | 119ab | N/A | 136a | 133a | 130bc |
TF | 132c | 111a | N/A | 77c | 107b | 107b | N/A | 132a | 135a | 125c |
A + SB | 162abc | 129a | 149a | 140ab | 145a | 134ab | 153a | 144a | 142a | 143abc |
A + TF | 173ab | 115a | 148a | 136ab | 143a | 145ab | 152a | 150a | 149a | 149ab |
LLA + SB | 172ab | 131a | 155a | 126b | 146a | 137ab | 164a | 148a | 129a | 145abc |
LLA + TF | 184a | 111a | 147a | 154ab | 149a | 137ab | 171a | 155a | 146a | 152a |
RRA + SB | 168ab | 138a | 153a | 154ab | 153a | 137ab | 161a | 142a | 154a | 149ab |
RRA + TF | 182a | 132a | 144a | 156ab | 154a | 149a | 163a | 152a | 138a | 151ab |
A + SB + TF | 180a | 133a | 148a | 130ab | 148a | 135ab | 160a | 143a | 140a | 145abc |
LLA + SB + TF | 182a | 137a | 159a | 139ab | 154a | 136ab | 161a | 151a | 145a | 148ab |
RRA + SB + TF | 175a | 126a | 147a | 151ab | 150a | 138ab | 165a | 141a | 140a | 146abc |
p-value | | | | | | | | | | |
N | 0.1601 | 0.9075 | 0.161 | 0.1486 | 0.8494 | 0.5725 | 0.6211 | 0.3376 | 0.8758 | 0.8709 |
T | < .0001 | 0.3195 | < .0001 | < .0001 | < .0001 | 0.0075 | 0.535 | 0.6692 | 0.203 | 0.0006 |
The LSMEANS with same letter are not significantly different at p-value of 0.05 level.
CP, crude protein; DM, dry matter; 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.