Agronomic efficiency of applying fertilizers and herbicides in crop rotation on sod-podzolic medium loamy soils

Under the conditions of the Vologda Region on sod-podzolic medium loamy soil the application of various doses of fertilizers has increased the productivity of rotational crops both with the application of herbicides and without it. The doses of fertilizers calculated for getting planned yield by means of balance coefficients of using nutrients from fertilizers and soil have decreased the payment of fertilizers by the gain both in metabolic energy and feeding units compared to the minimum dose of fertilizers (43 kg a.s./ha in the average annually). The payment of 1kg of the active substance of fertilizers in the metabolic energy gain has reached 142-52MJ, and in feeding units it amounted to 14-5kg.