Effect of Mineral Fertilizers on the Biological Activity of Soils using Direct Seeding Technology

In the field, the effect of liquid mineral fertilizers and carbamide ammonium nitrate (LMF and CAN) in the agrocenoses of peas, chickpeas, coriander, and flax on the biological activity of chernozems treated for a long-time using no-till technology was studied. Among the biological parameters, the activity of enzymes involved in the carbon cycle (invertases, dehydrogenases), the intensity of soil respiration, the number of microorganisms, and the content of active carbon were evaluated. There is a difference in the effects of fertilizers on crops and different parameters of biological activity. The biological activity of the studied soils varied depending on the type of mineral fertilizer as well as the cultivated crop.