Impacts of Improved Switchgrass and Big Bluestem Selections on Yield, Morphological Characteristics, and Biomass Quality

Table 5

Fall of 2011 and spring of 2012 values on dry matter basis for yield, moisture concentration, cell wall components, ash, and higher heating value (HHV) of three selections of switchgrass and three selections of big bluestem in Cookshire-Eaton, Quebec.

Entry		CIR	CIR2	CIRE	PV	PV2	PVE	value	LSD
Moisture (%)	Fall	43.6	44.9	35.5	44.3	35.6	43.9	0.0962	8.8360
	Spring	8.5	8.8	7.3
	% change	−80.4	−80.3	−79.5
	value	0.0007	0.001	0.0106
	LSD	3.8578	4.8707	12.587
Yield (Mg ha^−1)	Fall	3.5	5.9	2.5	2.1	1.9	1.6	0.0002	1.2830
	Spring	2.6	2.6	2.3	0.0	0.0	0.0
	% change	−26.2	−56.3	−8.5	−100.0	−100.0	−100.0
	value	0.2539	0.0188	0.6558
	LSD	2.5201	1.9826	1.7471
Cellulose (g kg^−1)	Fall	415	396	376	385	381	371	0.2719	40.852
	Spring	445	454	415				0.001	10.307
	% change	7.2	14.7	10.3
	value	0.3218	0.1236	0.0132
	LSD	98.893	97.169	19.321
Hemicellulose (g kg^−1)	Fall	352	317	339	316	301	290	0.0088	29.914
	Spring	345	304	333				0.0001	6.325
	% change	−1.7	−4.0	−1.7
	value	0.3591	0.2353	0.2808
	LSD	22.334	32.475	17.053
Lignin (g kg^−1)	Fall	73	77	61	55	70	66	0.1155	16.628
	Spring	72	89	63				0.0009	6.488
	% change	−0.5	16.2	3.4
	value	0.9687	0.3272	0.5228
	LSD	34.118	41.443	11.684
Ash (g kg^−1)	Fall	39	48	45	45	46	45	0.6675	11.274
	Spring	33	30	32				0.0179	1.539
	% change	−17.5	−38.0	−30.2
	value	0.1626	0.0725	0.0625
	LSD	13.665	22.343	15.498
HHV (MJ kg^−1)	Fall	19.15	19.09	19.31	19.22	19.20	19.27	0.7519	3.452
	Spring	19.35	19.36	19.25				0.6191	3.264
	% change	1.0	1.4	−0.3
	value	0.158	0.4399	0.2681
	LSD	0.387	1.2138	0.1836

Percent change relative to fall value.
CIR, Cave-in-Rock; CIR2, Cave-in-Rock II; CIRE, Cave-in-Rock Early; PV, Prairie view; PV2, Prairie view II; PVE, Prairie view Early.