UDC 631.412+631.452
DOI 10.36461/NP.2023.65.1.016
INFLUENCE OF THE ELEMENTS OF ORGANIC FARMING ON THE CHANGE OF THE AGROCHEMICAL PROPERTIES OF THE MEADOW CHERNOZEM SOIL AND CROP YIELDS
K.Yu. Kiseleva, Postgraduate Student; E.N. Kuzin, Doctor of Agricultural Sciences, Professor; A.N. Arefiev, Doctor of Agricultural Sciences, Associate Professor; E.E. Kuzina, Candidate of Agricultural Sciences, Associate Professor
Federal State Budgetary Educational Institution of Higher Education "Penza State Agrarian University", Penza, Russia. tel. 8(412) 62-85-65, e-mail:
This article studies the influence of organic farming elements on agrochemical properties of meadow cher-nozem soil. Studies have shown that manure, siderates and their complex use, together with stubble biodegrader and the non-marketable part of the crop rotation yield, has a positive impact on the content of humus, alkaline-hydrolyzable nitrogen, labile phosphorus and labile potassium. The greatest influence on the change of a number of factors of soil fertility was made by the use of legumes in combination with stubble biodegrader and by-products of agricultural crops during the independent and intermediate sideration in grain-row and fallow crop rotation. At the end of the study in 2022, the humus content was 5.23-5.24%, alkaline-hydrolyzable nitrogen – 119.1-120.0 mg/kg soil, labile phosphorus – 94.9-95.1 mg/kg soil, labile potassium – 158.0 mg/kg soil in the arable layer of the meadow chernozem soil, exceeding the initial values by 0.39-0.40%, 27.4-28.0 mg/kg soil, 22.6-22.7 mg/kg soil and 27.6 mg/kg soil, respectively. The increase in the content of humus, alkaline-hydro-lyzable nitrogen, labile phosphorus and labile potassium compared to the control variant was significant and amounted to 0.29-0.30 %, 19.9-20.8 mg/kg soil, 14.8-15.0 mg/kg soil and 18.1 mg/kg soil, respectively.
Keywords: meadow chernozem soil, manure, siderates, stubble biodegrader, humus, alkaline-hydrolyzable nitrogen, labile phosphorus, labile potassium.