Научный журнал

The purpose of the research is to study the influence of chicken manure on the productivity of cabbage on meadow - chernozem soil. The studies were conducted in the experimental field and in the Department of agricultural chemistry and soil science, FSBEI Omsk state agrarian university in the 2015-2017 period, a variety of cabbage “Gift” was used. The contents in the soil before planting: N-NO - 4.25-8.20, PO - 122-165, KO - 218-344 mg/kg. Increasing doses of poultry manure affected the productivity of cabbage. Under progressive doses of poultry manure (4-20 t/ha) additional yield was received. The most effective dose was 12 t/ha of poultry manure - the yield of head 80.2 t/ha, an additional yield was 23.1 t/ha or 40.5 %. Application of increased doses (16 and 20 t/ha) did not lead to a significant increase in the yield compared to a dose of 12 t/ha. The application of bird droppings increased the content of nitrate nitrogen in the first period of soil sampling from a very low level on the fertilizer-free variant to a very high one. The content of mobile phosphorus in the soil also increased significantly, but to a lesser extent than nitrate nitrogen. The potassium content in the soil poultry manure had less effect. With an increase in the dose of poultry manure from 0 to 20 t/ha, an increase in the amount of sugars from 5.02 to 5.29%, the content of vitamin C - from 21.6 to 23.7 mg%. The nitrate content during the introduction of increasing doses of poultry manure also increased slightly, but did not exceed the MPC. In the experiment were determined: payback of the introduced organic fertilizers by additional yield, the coefficients of action of fertilizers on the chemical composition of the soil, nitrogen of the current nitrification, the cost of nutrients to create a unit of production, the quantity of nutrients introduced with one tonn of organic fertilizers, the coefficients of the use of elements from soil and fertilizers.