Restoration and regulation of fertility of acid soils in conditions of Forest-steppe of Ukraine

Abstract

The purpose. To study effect of improved techniques of importation of defecate upon dynamics of the content of general humus and its fractions, physical-and-chemical and agrochemical soil characteristics, productivity of sugar beet at growing on grey forest soil and typical leached black earth in conditions of Right-bank and Central Forest-steppe of Ukraine. Methods. Physical-and-chemical and agrochemical analysis of soils and plants, phenological observations over propagation and growth of plants. Results. Technique of layered importation of ameliorant for grey forest sub-acid soil in reduced norms (0,25 norm by hydrolytic acidity — 1,5 – 2,0 t/he in physical weight) on the background of mineral fertilizers (N120P120K120) promoted increase of general humus up to 1,92%, general carbon — up to 1,11%, at content of humic acids 0,21% and ratio Chumic acids/Cfulvic acids — 0,77. That testified to formation of humate-fulvat type of humus. Conclusions. Use of improver in the form of defecate for grey forest sub-acid soil and typical leached black earth according to the improved methods and techniques of importation promoted increase of organic substances in soil, improved physical-and-chemical and agrochemical properties, heightened productivity of sugar beet.