Fertilizers on average increased the agricultural productivity of cultures on 14-35%, manure - by 1730, vermicompost - 5-23 and green manure - from minus 5 to plus 19%. In the 6-fi eld rotation, three of which were occupied by legumes and two row crops to produce positive humus balance is suffi cient to contribute annually to 10 t/ha manure or twice per rotation apply crucifers, legumes and green manure crops. Irrigation is always a positive effect on the balance of humus, especially in the application of green manure, as, increasing their productivity, are buried in a large mass of soil organic matter.