THE IMPACT OF ORGANIC FARMING IN GROWING MAIZE ON THE FEATURES OF FORMATION OF STRUCTURAL-AGGREGATE COMPOSITION OF SOIL IN THE CONDITIONS OF THE DANUBE STEPPE OF UKRAINE

Abstract

The study was conducted in a fixed three-factor experiment with ordinary chernozem (black soil). The positive impact of the improved system of pre-sowing soil preparation and care of maize crops, as well as the introduction of biodestructors Ecostern 1.5 l/ha and Cellulad 2.0 l/ha in the formation and increase in the content of agronomically valuable fraction of 0.25 - 10 mm on the formation of structural and aggregate soil composition. Minimization of the main tillage for maize by carrying out flat-cut tillage to a depth of 14-16 cm or disking for 10-12 cm had no advantage over plowing. The highest coefficient of soil structure was obtained in the experiment for turning the chips and wrapping postharvest residues and by-products of the predecessor with the introduction of biodestructor Cellulad 2.0 l/ha on the background of improved system of pre-sowing soil preparation and care of maize plants and was - 4.97 for soil layer 10 -20 cm.