IMPACT OF PLANT BIOMASS AND MAIN TILLAGE METHODS ON THE AGROPHYSICAL PARAMETERS OF THE SOIL AND PRODUCTIVITY OF CULTURES AT A CROP ROTATION

Abstract

The saturation of the soil with organic residues, the introduction of straw from the precursor and the harvest siderate stimulated the biological activity of the soil, and the use of various types of basic soil treatment changed the agrophysical properties of the soil. The results of research have found that the introduction of greenhouse siderate and straw contributed to maintaining the optimal density of the soil in the crop rotation link, and the combined treatment provided better conditions than in plowing. On the same variants, a decrease in the soil hardness occurred, positively influenced the formation of structural aggregates. For combined tillage, the content of structural aggregates on the background of mineral fertilizer application in the 0-20 cm layer exceeded the options with plowing by 5.2%, with the use of crop green manure by 3.2% and with the use of straw by 2.5%. For the combined tillage after winter rye, the cultivation of arable land was 19.7 - 22.8%, after pea - 17.3-19.7%, after spring wheat - 20.9-23.7%. For plowing options, these figures were 21.0-24.4, 19.6-21.4 and 23.5-26.0%. The maximum grain yield of winter rye (4.37 tons per hectare), pea (2.42 tons per hectare) and spring wheat (3.37 tons per hectare) was obtained on the variants of combined tillage and food backgrounds with the introduction of crop siderate.