Potato nutrition management using manure fertilizer

Abstract

The studies developed agrochemical regulatory parameters for the use of organic fertilizer based on litterless chicken manure for managing potato nutrition on meadow-chernozem soil in the forest-steppe of Western Siberia. The place of research was the experimental field and the department of agrochemistry and soil science of the FSBEI HE Omsk State Agrarian University in 2012-2014. The studied objects included potato plants of the Alaya Zarya variety and meadow-chernozem medium-thick medium-humus medium-loamy soil. Potatoes formed a yield of 22.9 t / ha without fertilizers and 26.0-33.2 t / ha with fertilizers. The use of 12 t / ha was the most effective because the yield increases in 10.3 tons or 45.0%, the payback of 1 ton of manurewas0.86 tons of tubers. 1 ton of litterless manure increases the concentration of N-NO3 by 2.06 mg/kg, P2O5 - 2.73 and K2O - 1.28. The authors established quantitative characteristics of the action intensity of 1 ton of manure on potato yields (1.14 t/ha) and proposed a formula of calculating doses for a planned increase in yield based on this study. They identified a normative indicator (coefficient b2) of the action intensity of 1 t/ha of manure on the nitrate-nitrogen content, mobile phosphorus and potassium. It allows to predict their accumulation in the soil and to determine the dose of fertilizers considering the optimal and actual content of the nutrient element in the soil.