EFFECT OF GRADED LEVEL OF N, P AND K ON THE GROWTH AND YIELD OF AMARANTHUS Cv. LAL RAJGIRA
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Date
1989-11-01
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MAHATMA PHULE AGRICULTURAL UNIVERSITY RAHUR1 DIST-Ahmednagar Maharashtra State, (India)
Abstract
An investigation was carried out to find out the optimum doses of N, P, K fertilizers for amaranthus as leafy greens and seed crops, their effects on growth and yield components^andto study the quality of leafy greens under Rahuri conditions. The fertilizer treatments consisted of three levels (0, 75, 150 kg) of nitrogen and three levels (0, 40, 80 kg) each of phosphorus and potassium per hectare. It was found that the growth parameters viz., number of branches, number of leaves, weight of leaves, weight of stems, dry matter content/plant and average leaf size were significantly influenced by various fertilizer treatments. Nitrogen application significantly increased the growth parameters. Next in order of merit were the applications of P followed by those of K. The N, P and K applications significantly influenced the yield of leafy greens, thousand seed most weight and seed yield. Nitrogen application asmosteffective. Different levels of P and K were less effective. The applications of N, P and K significantly increased the phosphorus, potash, crude fibre, iron and carotene contents of plants. Nitrogen content and crude protein contents were significantly increased only due to the nitrogen application. The different fertilizer treatments did not significantly affect4 the physiological weight losses in freshly harvested leafy greens at ambient temperatures. Hence, it could be concluded that though the nitrogen application at higher levels was most effective, the application of N, P, K together can improve the nutritive quality as well as the yields of leafy greens and seeds of amaranthus.
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