N-levels (kg ha-1) Plant density (plants ha-1) Mean 65000 80000 95000 0 5246 6070 6338 5884c 120 5370 6981 7200 6517ab 150 6949 7045 7572 7189a 180 6724 7154 7394 7091 b 210 7319 8392 7879 7863 ab Mean 6321 b 7128 a 7276 a

LSD(0.05) for Nitrogen=646.20; LSD(0.05) for Plant density=500.54 . Means of the same category followed by different letters are significantly different at 0.05 level of probability using LSD test.

Table 14: Biological yield (kg ha-1) of maize as affected by nitrogen levels and plant population