Purtova L.N., Kiseleva I.V.
Международный журнал прикладных и фундаментальных исследований 2020; (9): 59-63
Investigations of the physicochemical parameters and enzymatic activity of soils were carried out in a field experiment with crops of the eastern goat’s rue (Calega orientalis) with a different system of agrotechnical processing. The controversial effect of disking and harrowing of soils on the cellulose-decomposing activity of soils has been established The degree of enrichment of the PU horizon in agro-dark-humus gley soils with catalase was assessed as low for most of the experimental variants. An increase in catalase activity is characteristic of the variant with soil disking without fertilizers) and with the use of higher doses of mineral fertilizers during disking and harrowing (variants N90P120K120 + harrowing, N90P120K120 + disking).The use of higher doses of fertilizers led to the activation of biological processes, which contributed to an increase in catalase and cellulose-decomposing activity. This caused an increase in the integral indicator of the biological state of soils. A high correlation coefficient (r) was established between the parameters of catalase and the actual cellulose-decomposing activity. On variants with harrowing r = +0.82; with disking r = -0.82. The different nature of the change in the relationship between this parameters in the PU horizon of agro-dark-humus gley soils indicated differences in the course of the transformation of organic matter by the soil microflora under different soil treatment systems.
