Changes in the productivity of depleted lowland peatland in dependence of the mineral fertilizer

The paper presents the results of 50-year-long research on the changes in the botanical composition and productivity of the sown grass stand, as well as the agrochemical properties of the drained depleted lowland peatland used in fodder production. To maintain the productive longevity of fodder agrophytocenoses at the level of 5-6 thousand fodder units per 1 ha of arable land and to recover the soil fertility of the depleted peatland, we require additional energy in form of annual application of a balanced nitrogen-phosphorus-potassium fertilizer. Even a slight deviation from the developed fertilizer system causes the immediate degeneration of perennial mown grass stands sharply decreasing their productivity and the fertility of depleted peatland.