THE EFFECT OF CHEMICAL MELIORANTS AND BIRD DROPPINGS ON THE DENSITY OF THE ARABLE LAYER OF LEACHED CHERNOZEM

Abstract

The paper presents materials on the influence of various norms of meringue, dolomite flour and their combinations with bird droppings on the density in the surface layer of leached chernozem. It was found that the most significant effect on the decompression of the arable soil layer was caused by the introduction of marl and dolomite flour with a norm of 1.5 Нg in combination with bird droppings with a norm of 30 t/ ha. The density in the arable layer at the beginning of the growing season in 2020 against their background was 1.13 g/cm3, during the harvesting of winter wheat 1.14-1.15 g/cm3 and was lower than the control in the first case by 0.07 g/cm3, in the second case by 0.09-1.10 g/cm3. In the conditions of 2021, before sowing the spring wheat, the density of the arable layer on these variants of the experiment was 1.01 g/cm3, during the harvesting period 1.15 g/cm3 and was lower than the control by 0.08 and 0.10 g/cm3, respectively. At the beginning of the growing season of winter wheat in 2022, the density in the arable layer was 1.09 g/cm3, and during the harvesting period 1.12-1.13 g/cm3. The decrease in relation to the control variant was 0.10 g/cm3 at the beginning of the vegetation, 0.11-0.12 g/cm3 during the harvesting period.