The net profit from hectare from use summer siderate crops makes 16 million sums or change to 17 million sums at use autumn siderates. The percent of the received profit, i.e. profitability level on potato grades, has made 63,0-111,8 % at use summer siderate crops, 67,3-114,4 % at use autumn siderates, or as a result of use summer siderates profitability of branch has increased by 5,5-39,1 %, and at use autumn siderates on 4,3-41,0 %.