One of the tasks facing the agrochemistry is the search for fertilizers of prolonged action, with the gradual release of nutrients and having aftereffect. Under the conditions of a stationary field experiment on soddy-medium-podzolic light loamy soil in the conditions of the Northern Non-Black Soil Zone, the effectiveness of organic- mineral fertilizer (OMF) made on the basis of lowland peat with the addition of macro- and microelements, as well as humic acids manufactured by OAO the Buyskiy Chemical Plant has been studied.