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- Title
Water stability and labile humic substances of typical chernozems under different land uses.
- Authors
Kogut, B.; Sysuev, S.; Kholodov, V.
- Abstract
The water stability of typical chernozems was studied, as well as the content and composition of the labile humic substances (LHSs) in the structural units of perennial experiment treatments: C was 4.68% on an unmown steppe (fallow), 3.55% under continuous winter wheat without fertilizers, and 2.92 and 2.78% in two treatments of permanent black fallow. It was shown that the water stability of the chernozem's structure depended on the land use; it deteriorated in the following series: fallow > winter wheat > permanent fallow. No clear relationship was found between the content of C in the aggregates obtained by dry sieving and the size of these aggregates. At the same time, the content of C in the water-stable aggregates was shown to increase with their size. A positive correlation between the size of the water-stable aggregates and their content of LHSs was found for the unmown steppe and continuous winter wheat treatments.
- Subjects
CHERNOZEM soils; WINTER wheat; FERTILIZERS; WHEAT; FALLOWING
- Publication
Eurasian Soil Science, 2012, Vol 45, Issue 5, p496
- ISSN
1064-2293
- Publication type
Article
- DOI
10.1134/S1064229312050055