THE INFLUENCE OF SIDERATION ON CHEMICAL PROPERTIES OF SIEROZEM SOILS OF THE ZARAFSHAN VALLEY IN THE REPUBLIC OF UZBEKISTAN

In the article the identification of possibility of use under the conditions of the Zarafshan valley of various forms, siderate cultures on change chemical properties of the soil is considered. The greatest increase in the maintenance of humus, nitrates, phosphorus, the general nitrogen and phosphorus was noted in options at a plowing siderate peas+rye; typhone+rye; typhone+peas+rye. The best providing plants with the necessary nutritious elements with the help of siderate cultures create in the soil of a condition of the strengthened mineral food of plants and have essential impact on a crop and quality of production.