Influence of a dung introduction on efficiency of a field crop rotation component in October district conditions of Rostov region

Data of four years' research of direct action and after-effect influences of the turkey-cocks decomposed dung on efficiency of crops are provided in two component of the field crop rotation summer barley - sunflower - summer barley. The comparative assessment of this method and impact of mineral fertilizers on productivity of crops is presented. The optimum dose of the decomposed dung (15 tons/hectare) for introduction under summer barley during spring cultivation is defined.