The use of biologically active substances of different nature and their impact on the structural and aggregate composition of ordinary chernozem carbonate

The article shows the positive effect of biologically active drugs in combination with different doses of mineral fertilizers (according to the technical map for the Rostov region) on the dynamics of the structural and aggregate state of ordinary carbonate light loam on loess loam. With the cessation of the introduction of active substances, the value of the structural coefficient tends to its natural value, which is due to the indirect action of biologically active drugs, since their positive effect is manifested through the activation of microorganisms that have a direct effect on the rhizosphere of cultivated plant cultures.