Purtova L.N., Timofeeva Ya.O.
В журнале Eurasian Soil Science
Год: 2022 Том: 55 Номер: 10 Страницы: 1436-1445
The impact of different farming practices on changes in the properties and catalase activity of Albic Stagnosols with active iron–manganese nodule formation has been studied. The soils of unmanaged fallow with a slightly acid reaction, and the highest values of catalase activity and humus content in the upper part of the profile are close in their properties and morphology to the native soils of natural landscapes. In the soils of the phytoreclamation experiment, the influx of easily decomposable plant residues in combination with a less acidic reaction leads to an increase in the catalase activity. A high level of catalase activity is typical of horizons with the maximum content of nodules. The soils of the experimental variant with long-term appli- cation of organic fertilizer are specified by an increased stock of humus in the one-meter layer and by the low- est content of catalase. The application of mineral fertilizers is accompanied by a decrease in the humus con- tent without significant changes in the catalase activity. The calculation of the catalase reserves coefficient, which more objectively reflects the level of enzymatic activity of the studied soils, is suggested.
