Table 1 Forage yield and composition based on species and soil fertility.

Species	Fertility	Forage yield	N removal	C^b	N	NDF	ADF	Lignin	Ash	Hemi	Mg	Mn	Na	P	S
Species	Fertility	kg ha⁻¹		%							mg kg⁻¹
Forage mass
Native grass	Poultry litter	2588 ab^a	46 a	44 a	1.62 a	61.27 a	34.31 a	7.25 a	1.28 a	26 a	1307 a	152 a	230 a	2478 a	1384 a
Native grass	Control	2326 ab	56 a	43 a	1.51 a	61.45 a	37.02 a	6.45 a	2.21 a	24 a	1429 a	141 a	139 a	2449 a	1437 a
Orchardgrass	Poultry litter	2312 ab	72 a	43 a	1.77 a	60.99 a	35.16 a	6.65 a	1.14 a	25 a	1868 a	114 a	382 a	3469 a	1987 a
Orchardgrass	Control	1218 b	58 a	44 a	1.85 a	60.59 a	34.12 a	6.60 a	1.39 a	26 a	1851 a	154 a	513 a	3079 a	2102 a
Biomass accumulation
Native grass	Poultry litter	2588 a	42 a	44 a	1.67 a	63.90 a	33.62 a	5.98 a	1.18 a	30.18 a	1410 a	105 a	135 a	2912 ab	1474 b
Native grass	Control	2326 a	34 bc	45 a	1.48 a	64.79 a	33.83 a	5.41 a	1.33 a	30.82 a	1382 a	106 a	107 a	2308 b	1147 c
Orchardgrass	Poultry litter	2312 a	40 ab	44 a	1.83 a	61.26 a	33.74 a	7.74 a	1.27 a	27.58 a	1819 a	134 a	371 a	3731 a	2039 a
Orchardgrass	Control	1218 b	20 c	45 a	1.77 a	61.04 a	32.95 a	8.35 a	1.23 a	28.15 a	1734 a	143 a	506 a	3564 ab	2185 a

Forage mass and biomass accumulation and compositional parameters based on the two-way interaction of forage species [(C₄; native grass mix, and C₃; non-native, orchardgrass)] × fertility [fertilized with poultry litter and without)] averaged across sampling date (early-May, late-May, early-June, mid-June, and late-June] by harvest management.
^aDifferent letters indicate a significant difference at P ≤ 0.05 within a given column [per forage parameter (forage mass and biomass accumulation)].
^bNDF neutral detergent fiber, ADF acid detergent fiber, Hemi, hemicellulose, C carbon, N nitrogen, Mn manganese, S sulfur, K potassium, P phosphorus, Mg magnesium.

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