Effect and Evaluation of Zeolite and Biohumus on Biological Indicators of Irrigated Seed-gray Soils

The effect of zeolite and biohumus on the biological activity of irrigated grass-gray soils under beans of the subtropical zone was studied. It was determined that the biological activity of the irrigated grass-gray soils changes depending on the growth phase of the bean, the applied biohumus and zeolite rate. Based on complex biological indicators (activity of enzymes, the number of microorganisms, abundance of carbon dioxide released from the soil, intensity of the nitrification process, intensity of decomposition of cellulose), bio-diagnostics of irrigated meadow-gray soils were given, an integral indicator of the biological condition of the soil was determined, and a biological assessment was carried out.

The purpose of the work is to determine the effect of biohumus and zeolite on the biological activity of irrigated grass-gray soils used under the bean plant, and to conduct a biological evaluation based on complex biological indicators.

The research object is irrigated meadow-gray soils (in WRB - Irragic Calsisols) of the subtropical zone, various doses of biohumus and zeolite, small bean-mung bean (Vigna Angularis) plant. Scheme of the experiment: 1. control (without fertilizer); 2. biohumus 5 t/ha; 3. zeolite 5 t/ha (clinoptilolite); 4. biohumus 5 t/ha + zeolite 5 t/ha; 5. biohumus 7.5 t/ha; 6. zeolite 7.5 t/ha; 4. biohumus 7.5 t/ha + zeolite 7.5 t/ha.

Chemical composition of zeolite: Na2O-0.55; MgO-1.49; Al2O3-11.86; SiO2-66,0; P2O5-0.11; SO3-0.01; K2O -9.02; CaO-6.61; TiO2-0.51%; MnO-0.07; Fe2O3-3.77.

Chemical composition of biohumus: humus 16%, pH 7, total azot (N) 3.2%, total phosphorus (P) 2.6%, total potassium (K) 2%, Ca 4.3%, Mg 0.6%, Fe 0.45%, Cu 0.5%, C:N 13.

Mathematical-statistical calculation of the numbers obtained as a result of the research was carried out based on the Anova programma. The obtained results show a significant difference between the variants and compared to the control.