Abstract

The field studies on the effect of irrigation and fertilization on production potential of wheat during 1979-80and80-81 revealed that any reduction in recommended fertilizer and irrigation levels reduced grain yield significantly. Two post-sowing irrigation given at CRI and milky stages increased mean grain yield by 10 g/ha (62.5%) over control. Two more irrigation applied at jointing and flowering stages increased 4 q/ha in mean grain yield. Mean grain yield reduced by 3.7 and 3 q ha when recommended fertilizer dose (80-60-40) was re- duced upto 66-6 and 33,3 percent respectively. Irrigation water use efficiency and nutrient response decreased with increasing levels of irrigation and fertilizer doses.

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