EVALUATION OF FLOWERING, PHYSIOLOGICAL MATURITY AND GRAIN YIELD OF MAIZE UNDER DIFFERENT LEVELS OF..

During the winter season of 2006/07, an experiment was conducted at Mangalpur, Chitwan, Nepal to determine the effect of nitrogen and plant population on maize flowering, maturity, and grain output. The experiment used five levels of nitrogen: 0, 50, 100, 150, and 200 kg N/ha, as well as three levels of plant population: 55555, 66666, and 83333 plants/ha. With increasing nitrogen levels, tasseling and silking days declined, and the application of 200 kg N/ha+55555 plants/ha resulted in the lowest tasseling and silking days. Increases in nitrogen and plant population levels promoted physiological maturity. The grain yield generated with 200 kg N/ha + 66666 plants/ha was the highest, followed by grain yield produced with 150 kg N/ha+83333 plants/ha. The optimum level of nitrogen for greater grain yield when combined with 83333 plants/ha was 150 kg N/ha. This study found that at 200 kg N/ha + 55555 plants/ha, blooming days can be shortened and maize output can be optimised, while at 200 kg N/ha + 66666 plants/ha, maize production can be maximised.

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