The long-term research conducted in 2002-2017 in a long stationary experiment on studying different types of field crop rotations under conditions of the Kirov region showed that on sod-podzolic soils the loss of humus could be lowered using agro technical methods. The most critical of them include the reduction of a portion of bare fallow. transition to sown and green-manure fallow. ... https://fitnessgravesyardes.shop/product-category/roller-wheel/