Abstract
The influence of dump and minimal agrochernozem processing technologies on the activity of nitrogen cycle enzymes and their role in the transformation of nitrogen-containing organic compounds was evaluated. The most significant differences in the seasonal dynamics of the fraction content of difficult-to-hydrolyze nitrogen compounds were found in the soil of the barley agrocenosis in all types of tillage. When using surface disking, the dynamics of their content was determined by the activity of protease. The high availability of the soil with easily hydrolyzable nitrogen was revealed, which indicated that there was no need for nitrogen fertilizers. The dependence of the dynamics of the content of easily hydrolyzable nitrogen compounds on the activity of protease was ambiguous. Under conditions of minimal tillage, the formation of easily hydrolyzable nitrogen compounds was inversely dependent on the proteolysis process. The plane-cutting method of loosening caused an increase in the level of urease activity relative to dump plowing and surface disking.
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