Kucher L. Features of potassium regime in the meadow-chernozemic leached soil under soil conservation technologies of crop growing.

The object of researches is a potassium regime of meadow-chernozemic soil, the potassium content in plants, productivity of corn on a silo and summer barley under different systems of soil cultivation and fertilization. The purpose of researches is to study influence of soil conservation technologies on potassium regime of meadow-chernozemic soil and productivity of agricultural crops. Methods: field, long-term, laboratory, mathematical-statistical. Scientific novelty: features of a potassium regime of meadow-chernozemic soil under different systems systems of soil cultivation and fertilization are determined. Positive influence of soil conservation technologies on transformation of potassium from non-exchangeable to the accessible for plants form under effect of soil solution acidification is determined. There are determined general, potential, near and direct reserves of potassium in this soil, links between forms of potassium, productivity and potassium content in plants. Results of the research are used in the private agricultural enterprise "Sokilcha" of Popelnja area of Zhitomir district; in the research enterprise of the Mliev Institute of gardening named after L.P.Simirenko of Gorodishchenskiy area of Cherkassy district.