The effect of N fertilizer rates on agronomic parameters, yield components and yields of maize grown on Alfisols of North-western Ethiopia

Environmental Systems Research

Table 4 The effect of nitrogen fertilizer rates on yield components

Fertilizer rate (kg ha⁻¹)	1000-grain weight (kg)	Number of kernels per ear	Number of ears per plant
0	0.406	295.43 e	0.993 d
30	0.408	337.16 d	1.020 c
60	0.410	387.19 c	1.018 c
90	0.413	422.53 b	1.047 b
200	0.397	451.80 a	1.077 a
F test	ns	**	**
CV (%)	15.6	20.8	7.4

Means followed by a common letter in a column are not significantly different at the 5 % probability level by DMRT; **, ns = significant and non-significant at 5 % probability levels, respectively