Effect of Long-Term Anthropogenic Action on the Content and Composition of the Organic Matter of Leached Chernozem in the Forest-Steppe Near the Ob River
I. N. Sharkov, A. A. Danilova
Siberian Research Institute of Farming and Chemicalization of Agriculture, Russian Agricultural Academy
humus3@yandex.ru
Keywords: soil organic matter, total carbon, mobile carbon, mortmass, leached chernozem, no-tillage technology
Pages: 693-701
Abstract
Effect of the application of fertilizers and under-winter cultivation (ploughing, moldboardless, no-tillage) on the content and composition of the soil organic matter was studied. Cultivation procedures did not have a substantial influence on the general content of total carbon, mobile humus and mortmass in soil layer 0-30 cm. However, between cultivation procedures, substantial differences in the distribution of carbon and mortmass were detected in this layer, which is due to the features of embedding plant residues into soil. Under the effect of long-term application of fertilizers in soil layer 0-30 cm carbon content Сtotal remained almost unchanged, while the content of mortmass carbon and mobile humus increased by about 10 %.
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