ANALYSIS OF AGROCENOSIS PRODUCTIVITY AND TRANSFORMATION OF SOIL FERTILITY UNDER BIOLOGIZATION CONDITIONS

Under the conditions of the dry steppe zone on light chestnut soils, the most effective is a grain-fallow, four-field biologized agrocenosis, in which green manure mass of winter rye and straw of cultivated crops are incorporated into the soil. As a result of the introduction of this agrocenosis, it is possible to ensure a positive balance of organic matter entering the soil +3.33 t/ha and nutrients: nitrogen +39.7; phosphorus +0.7 and potassium +49.9 kg/ha, as well as the highest grain harvest – 1.71 t/ha of crop rotation area.