ECONOMIC AND ENERGY EFFICIENCY OF AGROTECHNOLOGIES IN GRAIN CORN CULTIVATION IN THE BELGOROD REGION
Economic and energy efficiency of poultry manure and compost application in cultivation of grain corn is shown. Grain corn cultivation maximum efficiency 72.3 dt/ha has been reached during plowing and application of poultry manure by 20 t/ha + N <sub>60</sub>. Maximum net profit (20744.5 rub) has been received at plowing and poultry manure application of 20 t/ha at 156% level of profitability and 2 rub/kg grain prime cost. Maximum energy amount (1.84 units) in crop increase as a result of applied fertilizers has been received on plowing with application of poultry manure of 20 t/ha.