Effect of using repeated and siderate crops on soil fertility, yield of cotton varieties, and technological quality indicators of cotton fiber in short rotation cropping systems

In the 1:1 (cotton:grain) system of short-rotation, soybean, bean, mung bean crops were harvested as a repeat crop after winter wheat. Their stem and mixed siderate (perco, oats, green peas) planted in second half August, blue mass grown October-November was for livestock. The lower 15-20 cm part plowed under plow manure, at end one rotation, amount organic carbon soil increased by 0.041-0.073%, total nitrogen content 0.012-0.016% compared to initial values. highest rate dry accumulation cotton observed when using short-row rotation 1:1, wheat + oat, pea):cotton system. leaves Navroz variety 22.6 g, 33.4 bolls 18.5 48.0 g. 1 plant equal 122.5 legume-cereal (soybean, bean) pea) crops, it provided higher better quality yield. Cotton yield 3.2-5.8 tons/ha, fiber output 1.0-1.5 percent, 1000 seed 9.0-11.0 g/ha. Besides, length found be 1.4-2.0 mm.