Effects of Nitrogen Application on Growth and Ethanol Yield of Sweet Sorghum [Sorghum bicolor (L.) Moench] Varieties

Table 4

Main effects of variety and N fertilizer on the fresh stalk yield (FSY, t ha⁻¹), average stalk length (ASL, cm), and average stalk girth (ASG, cm) of sweet sorghum at the Ilorin (ILR) and Ejiba (EJB) experimental sites.

Treatment	FSY		ASL		ASG
	ILR	EJB	ILR	EJB	ILR	EJB
Variety (V)
NTJ-2	20.09	19.26	132.3	152.8	1.52	1.41
64 DTN	25.32	19.49	125.1	141.4	1.68	1.48
SW Makarfi 2006	22.59	18.18	148.1	146.5	1.51	1.36
SW Dansadau 2007	27.75	25.21	166.3	182.3	1.48	1.42
SED	1.02	1.11	3.05	4.65	2.24	0.038
LSD(0.05)	2.49	2.72	7.46	11.39	5.49	ns
Fertilizer (F) (kg N ha)
0	15.43	16.45	130.9	143.4	1.31	1.29
40	23.69	22.69	151.0	167.4	1.56	1.45
80	27.41	20.85	143.8	152.5	1.50	1.45
120	27.22	21.91	139.8	160.4	1.75	1.47
160	25.95	20.78	149.1	155.0	1.62	1.44
SED	0.79	1.67	3.85	4.50	4.24	4.63
LSD(0.05)	1.61	3.39	7.83	9.16	8.63	9.43
Interaction
V × F			ns		ns	ns

Means followed by the same letters are not significantly different from each other at 5% probability level. LSD_(0.05): least significant difference at 5% probability level. SED: standard error of difference. and denote significance at 5% and 1% probability levels, respectively. ns: not significant.