EFFECT OF MINERAL FERTILIZER RATES APPLIED IN CONTINUOUS RICE CULTIVATION AND CROP ROTATION SYSTEMS ON YIELD ELEMENTS OF RICE
Keywords:
continuous rice cultivation, crop rotation, soybean, mineral fertilizers, manure, panicle length, number of grains per panicle, weight of panicle and 1000 grain weight.Abstract
Abstract: It was found that the parameters of mineral fertilizers used in continuous rice and rotation systems affected the grain yield of "Iskandar" rice variety. In continuous rice cultivation, in the control, organic fertilizer (40 t/ha) and mineral fertilizer (N150 P120 K100 kg/ha) variants, the length of the rice grain was 17.5-20.6 cm, the number of grains per ridge was 51.2-81.1 grains on average, the weight of one ridge was 1.7-2.6 g/grain, and the weight of 1000 grains was 28.9-31.5 g. In the 1:1 soybean:rice system, the control and mineral fertilizers N50 P120 K100, N100 P120 K100, N150 P120 K100 kg/ha were used, the length of the rice grain was 19.2-21.9 cm, the number of grains per ridge was 73.4-95.8 grains on average, and the weight of one ridge was 1.7-2.6 g/grain. It was found that the average weight of the rumen was 2.3-3.0 g/piece, and the weight of 1000 pieces of grain was 31.0-32.1 g.
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