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.