Effect of biohumus and zeolite on the dynamics of nutrients

During the research period, the amount of nutrients (nitrogen nitrate form, absorbed ammonia, activated phosphorus) in Gleyi-Irragic Calcisols under the adzuki bean plant Vigna angularis (Willd.) Ohwi & H. Ohashi was studied in dynamics. Schemes used in practice: 1. control (without fertilizer); 2. biohumus 5 t/ha; 3. zeolite 5 t/ha; 4. biohumus 5 t/ha + zeolite 5 t/ha; 5. biohumus 7.5 t/ha; 6. zeolite 7.5 t/ha; 7. biohumus 7.5 t/ha + zeolite 7.5 t/ha. During the growing season, the amount of nutrients changed significantly, depending on the amount of applied biohumus and zeolite, as well as the growth phases of the plant. The amount of nutrients in the Gleyi-Irragic Calcisols changed from the beginning to the end of the vegetation in the direction of decrease. Nutrients from the soil environment are intensively absorbed by the plant as it is spent on the formation of vegetative and generative organs during the growing season of the bean plant.