The influence of legume crops, bentonite clays, and peat on the composition and agrochemical properties of agrosod-podzolic soils

In agriculture, the issues of applying agricultural techniques aimed at improving soil structure, increasing absorption capacity, physico-chemical properties of sod-podzolic soils, and improving agrochemical properties remain relevant. The article presents the results of the action of the ameliorant bentonite clay, lowland peat and leguminous grasses aimed at increasing the fertility level of agro-sod-podzolic sandy loam soil. The greatest effect of increasing the yield of legumes in the experimental variants from the combined use of peat and bentonite clay was 10.11 t/ha, with the control 7.4 t/ha. There was no significant increase in the yield of legumes in the variant with bentonite clay – 7.47 t/ha. The protein content of the legumes presented in the experiment is the highest – 24.5% with the use of bentonite clay and peat. In the agro-sod-podzolic soil in the variant with the use of peat, bentonite clay and sowing of legumes, the structural-aggregate composition improved (structural coefficient 1.10) had an effect on the fractional composition of soil aggregates by 1.19 units; the content of silt particles, the content of organic matter and nitrogen increased compared to the control.