Efficiency of agrobiotechnological practices of cultivation of cup for green growth on soddy-podzolic loamy-sandy soils

Abstract

The most agronomic and economic effective use of N_60+30+30P⁶⁰K₁₂₀B_0,10Zn_0,15 in combination with foliar dressing of plants growth stimulators twice on the background of 60 tons/ha of cattle manure was for maize growing for green material it was found In a field technological experiment on sod-podzolic loamy sand soil. Such a system of fertilization with savings of 90 kg/ha of mineral fertilizers, provides 14,7 t e., collecting protein 36,3 kg/ha, the conditional profit – 14,6 USD/ha and 4 % of profitability. Each kilogram of mineral fertilizers provides compensation of 45 centners of green mass of maize, the cost of the increase of 1 ton of nutritional unit amounts to 77 USD/ha. This fertilization system maintains the achieved level of mobile phosphate content and restrains the rate of loss of mobile potassium compounds of the soil.