Influence of Plant Population and Nitrogen-Fertilizer at Various Levels on Growth and Growth Efficiency of Maize

Table 3

Interaction effect of population density and N-fertilizer rates on yield and yield parameters of maize.

Interaction of population and N-fertilizer; (000’ No./ha × kg/ha)	Grain yield (t/ha)	Stover yield (t/ha)	TDM (t/ha)	HI (%)
53×100	2.52	9.18	11.19	21.51
53×140	3.92	8.76	12.69	27.91
53×180	4.43	9.0	13.43	29.98
53×220	4.40	9.83	13.87	27.92
66×100	3.20	11.03	14.23	22.48
66×140	4.31	11.17	15.48	27.84
66×18	4.70	11.01	15.71	29.91
66×220	4.58	12.06	16.64	27.17
80×100	3.50	12.42	15.92	21.98
80×140	4.67	13.59	18.26	25.57
80×180	5.03	13.59	18.62	27.01
80×220	4.62	15.17	19.79	23.34
LSD (0.05)	0.3	0.86	0.86	1.49
CV (%)	9.4	6.39	6.39	5.83

TDM: total dry matter; HI: harvest index; stover yield means dry-mass of roots and shoots.