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EFFECT OF SUPPLEMENTARY IRRIGATION AMD WEED CONTROL ON PERFORMANCE OF LATE SOWN MAIZE (Zen mays L.)
Abstract:
To explore the possibility of growing a good crop of late sown maize with supplementary irrigation and suitable weed control measures, on experiment was carried out at Kadawa, Nigeria, in 1984. The irrigation treatments comprised of irrigation at seven, 14 and 21 days intervals and at attainment of severe moisture stress. The weed control treatments comprised of hoe-weeding at three and six weeks after sowing (w.a.s.), atrazine + eradicane (1.5 + 2.0kg a.i./ha) and atrazine + metolachlor (1.25 + 1.25kg a.i./ha) herbicide treatments. The herbicide treatments were followed by supplementary hoe-weeding at six weeks after sowing. Irrigation at seven, 14 and 21 days intervals significantly increased the grain yield by 96, 58 and 60%, respectively, over the treatment with severe moisture stress. Parameters such as final plant height, days to maturity, ear length, ear diameter, kernel depth and 1000-grain weight of maize were all significantly superior under irrigated than unirrigated condition. There were no significant differences between the three weed control treatments on weeds, yield and yield components. They were equally effective. In areas like Kadawa where water table is high, a good crop of late sown maize can be grown with supplementary Irrigation (325 to 39Qmntwater) at longer irrigation intervals of 14 or 21 days
EFFECT OF SUPPLEMENTARY IRRIGATION AMD WEED CONTROL ON PERFORMANCE OF LATE SOWN MAIZE (Zen mays L.)
