Dynamics of catalase activity of common chernozem under conditions of minimization of processing

The aim of research is to study the effect of the main processing methods on the catalase activity of the chernozem of the Krasnoyarsk forest-steppe. The studies were carried out on common chernozem in the production experiment of LLC "Agricultural enterprise" Dary Malinovki" in Sukhobuzimsky District in the Krasnoyarsk forest-steppe in 2017-2019. In the production crops, reference plots of rectangular shape were identified with a total area of 1200 m2, with a counting area of 600 m2. Within each plot, three plots were identified - replicates with an area of 200 m2. Sample size - n = 12. Soil samples were taken three times during the growing season from 0-10 and 10-20 cm layers using the snake method. The experiment scheme is represented by the following options: 1) dump (st); 2) minimum; 3) flat-cut. In the 2017 season, the soil of the experimental variants was cultivated according to the type of clean early fallow, and in 2018 at the field station, spring wheat of the Novosibirskaya-31 variety was sown, in 2019 - barley variety Acha was sown. During the growing seasons, the dynamics of catalase activity was monitored. It was found that tillage had a significant effect on the level of oxidative processes due to the activation of catalase. The study confirmed the regularity of the essential role of the roots of cereals in the catalytic functionality of the soil. The level of enzyme activity was assessed as average and did not depend on the method of basic soil cultivation. At the end of the active growing season, when the root system of grain crops ceased to function actively, the level of destruction of hydrogen peroxide in the soil treated without a tillage method remained significantly higher than in the plowed soil.