THE INFLUENCE OF BIOHUMUS AND ZEOLITE ON THE INTENSITY OF THE NITRIFICATION PROCESS IN IRRIGATED MEADOW-GREY SOILS

Abstract

Biohumus and zeolite were used to maintain the fertility of irrigated meadow-gray soils (in wrb - irragic calsisols) of the subtropical zone and to increase the productivity. Different doses of biohumus and zeolite (5 t/ha and 7.5 t/ha) were applied alone and in combination under the bean plant, and the intensity of the nitrification process was studied in dynamics depending on the growth phases of the plant. The nitrification capacity of the soil changed in different directions depending on the development phase of the bean plant (mung bean) and the applied fertilizer rates depending on the development phase of the bean plant, the nitrification capacity of irrigated meadow-gray soils was minimum in spring and autumn and maximum in summer. The obtained results show a significant difference between the options and in the options where biohumus is applied alone and in combination with zeolite compared to the control.