Productivity and Water Use Efficiency of Sorghum [Sorghum bicolor (L.) Moench] Grown under Different Nitrogen Applications in Sudan Savanna Zone, Nigeria

Table 2

Effect of fertilizer levels and variety on phenological and morphological traits of sorghum in Sudan Savanna zone Nigeria.

Treatment	BUK							Minjibir
	50% flowering	Maturity	SPAD	LAI	SPAD	LAI	Plant height	50% flowering	Maturity	SPAD	LAI	SPAD	LAI	Plant height
	(days)		(3 WAP)		(6 WAP)		(cm)	(days)		(3 WAP)		(6 WAP)		(cm)
Year (Y)
2014	76.32	106.31	41.90	3.78	48.83	2.84	230.6	88.4	109.5	41.72	2.50	40.18	2.78	201.1
2015	79.76	104.89	38.69	3.27	42.70	2.29	237.9	80.2	108.1	40.07	2.28	37.51	1.68	190.5
P of F	0.005	0.041	0.106	0.073	0.024	0.013	0.109	0.002	0.249	0.035	0.036	0.012	<0.001	0.094
SED	0.46	0.41	0.99	0.19	1.02	0.19	4.56	0.80	0.42	0.77	0.11	1.04	0.09	6.24
LSD	1.46	1.31	1.40	0.60	1.33	0.33	9.04	2.55	0.83	1.53	0.21	2.07	0.17	12.37
Fertilizer (F)
0	79.4	107.5	38.8	3.20	40.0	2.46	232.4	84.2	111.7	39.0	1.87	33.9	1.69	180.7
20	78.7	105.5	40.7	3.58	44.6	2.65	218.3	85.0	110.2	40.0	2.23	35.8	2.12	185.0
40	77.6	104.9	41.2	3.62	47.5	2.61	258.2	84.1	108.1	38.5	2.47	37.2	2.11	186.5
60	77.8	105.3	39.8	3.57	45.0	2.46	236.8	84.2	108.8	41.1	2.50	42.0	2.31	209.7
80	77.5	105.7	40.7	3.64	46.8	2.66	233.0	84.0	107.6	44.7	2.65	42.8	2.70	209.2
100	77.3	104.7	40.7	3.53	46.9	2.53	226.8	84.2	106.2	42.1	2.61	41.4	2.46	203.6
P of F	0.007	<0.001	0.085	0.236	0.136	0.809	<0.001	0.792	<0.001	<0.001	<0.001	<0.001	<0.001	0.015
SED	0.64	0.66	0.88	0.20	1.56	0.19	7.90	0.84	0.72	1.33	0.18	1.81	0.15	10.81
LSD	1.28	1.30	1.75	0.39	3.10	0.37	15.66	1.67	1.44	2.65	0.36	3.58	0.30	21.43
Variety (V)
CSR01	90.4	117.1	40.7	3.99	48.1	3.05	258.4	90.0	124.3	41.2	2.83	38.4	2.55	214.7
ICSV400	64.5	90.65	39.6	2.98	42.3	2.03	167.3	70.7	90.9	39.3	1.88	37.6	1.63	141.5
Local	79.2	109.0	40.6	3.59	46.9	2.61	277.0	85.2	111.1	42.2	2.45	40.6	2.51	231.2
P of F	<0.001	<0.001	0.156	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	0.01	<001	0.05	<0.001	<0.001
SED	0.46	0.46	0.63	0.14	1.10	0.13	5.58	0.60	0.51	0.94	0.13	1.28	0.11	7.64
LSD	0.90	0.92	1.24	0.27	2.19	0.26	11.07	1.18	1.01	1.87	0.25	2.53	0.21	15.15
CV (%)	2.9	2.2	7.6	17.2	11.1	25.5	11.7	3.6	2.3	11.3	26.3	16.1	23.7	19.1
Interaction
Y × F			ns	ns	ns	ns	ns	ns						ns
Y × V			ns							ns		ns
F × V	ns			ns	ns	ns		ns	ns	ns	ns	ns	ns	ns
Y × F × V		ns	ns	ns	ns	ns	ns	ns		ns	ns	ns	ns	ns

SED:  standard error of differences of means; LSD: least significant differences of mean (5% level); CV: coefficient of variation; and mean significant different at 0.01 and 0.05 level of probability; ns: not significant.