N-levels (kg ha-1) Plant density (plants ha-1) Mean 65000 80000 95000 0 32.90 32.11 27.72 30.91 120 30.86 36.06 30.14 32.35 150 33.87 41.36 27.59 34.27 180 34.35 37.33 32.93 34.87 210 40.64 32.89 29.32 34.28 Mean 34.52 a 35.95 a 29.54 b

LSD(0.05) for Plant density=3.09. Means of the same category followed by different letters are significantly different at 0.05 level of probability using LSD test.

Table 16: Harvest index (%) of maize as affected by nitrogen and plant population.