Residual Nitrogen Contributions from Grain Legumes to the Growth and Development of Succeeding Maize Crop

Table 4

Effect of previous legume crop and nitrogen fertilizer on leaf area (cm²) per plant of succeeding maize crop at Samaru during 2008 cropping season.

Treatments	Weeks after sowing
	8	12
Previous Crops (P)
Soyabean	529.8b	677.2d
Cowpea	521.3b	686.2d
Lablab	668.8a	894.5a
Groundnut	563.1b	757.6bc
Previous maize	533.1b	687.9d
Fallow	548.0b	787.4b
Nitrogen (kg N ha^-1)
0	248.3c	450.1d
40	555.7b	774.3c
80	646.9a	850.0b
120	691.9a	919.5a

Means followed by the same letter(s) within the same treatment group and same week are not statistically different at 5% level of significance (P ≤ 0.05).