Soil Exhaustion Criteria for Central Siberia

The currently available soil fertility indicators may be interpreted in relative terms only, considering both soil characteristics and external conditions [5]. [...]it is necessary to develop a system of new indicators, characterizing soil fertility and the environmental situation influencing the pr...

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Bibliographic Details
Published in:Journal of pharmaceutical sciences and research 2018-04, Vol.10 (4), p.870-873
Main Authors: Shpedt, Alexander Arturovich, Aksenova, Yulia Vladimirovna
Format: Article
Language:English
Subjects:
Agriculture
Composting
Crops
Decomposition
Ecosystems
Farming
Mineralization
Nitrates
Nitrogen
Phosphorus
Science
Soil fertility
Soil sciences
Sustainability
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Summary:The currently available soil fertility indicators may be interpreted in relative terms only, considering both soil characteristics and external conditions [5]. [...]it is necessary to develop a system of new indicators, characterizing soil fertility and the environmental situation influencing the productivity of agricultural crops. Based on the concepts of heterogeneity and different levels of resistance of soil organic matter (SOM) to mineralization, Tate [6] suggested sorting it according to its mobility and decomposition speed. [...]SOM is subdivided into two main categories according to its biodegradability and transformability: labile and highly mineralized SOM and sustainable humus SOM, which is preserved for a long period [6; 7; 8; 9]. In Siberia, the period of microorganism reproduction is shorter, as compared with European, and falls on the second half of the summer. [...]organic matter accumulation is weak, and so is the release of mobile forms of nitrogen and phosphorus. Studying the EDOM content in fallows reveals that using a unified 25-point scale for soils of different types is not effective. [...]at the present time, different scales are used; a 25-point scale is used for sod-podzol, light grey and grey forest soils, a 15point scale is used for dark grey forest soils and for black soils of forest-steppe and steppe zones and a 20-point scale is used for chestnut soils.
ISSN:0975-1459