In order to increase the organic matter in the soil in order to obtain a high and quality product from the amaranth plant, after harvesting the cotton crop of cotton, which is the main crop, rye and rapeseed were planted as siderate crops. In early spring, 380-400 ts/ha of blue mass was thrown on the ground and plowed. As a result, it was observed that the amount of humus in the soil increased by 0.001%, and the general forms of nutrients increased by 0.001-0.002%.