The effect of alfalfa crops on the fertility of humus-gley soil
Cultivation of rice without replenishing soil with biological nitrogen leads to a decrease in organic matter and plant mineral nutrition. Alfalfa crops on rice irrigation systems have a beneficial effect on the formation of humus in the soil and its structure. Long-term studies of ARRRI, conducted on humus-gley soil, have established that the absence of alfalfa crops causes dehumification and agro-depletion, as well as deterioration of the water-physical properties of the soil. Cultivation of alfalfa ensures the reproduction of humus content and an increase in the porosity of aeration of the studied soil.