The influence of fertilizer rates and the amount of irrigation on the water-physical properties of the soil under mixed crops

The article studies and analyzes the effect of fertilizer rates and the number of irrigations on the water-physical properties of the soil under mixed crops. In world practice of agricultural crops mixed crops are used, mainly cereals and legumes, to provide an increase in the productivity and quality of crops, they alsocontribute to the maintenance of soil fertility. Long-term studies have shown that alfalfa roots and stubble residues are of great importance for maintaining and restoring soil fertility. First, the soil is enriched with nutrients that can be absorbed by the roots, and thenthe root system enriches the soil with organic matter, which, in turn, improves the water-physical properties of the soil. From our studies we came to the following conclusions: optimization of the amount of fertilizer and irrigation rates in mixed crops of barley and alfalfa has a significant effect on the water-physical properties of the soil. We advise farmers to use organic and mineral fertilizers in alfalfa crops at a rate of 10 t/ha + N 15 P 60 K 30 .