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INFLUENCE OF SOIL SALINITY ON MICROBIOLOGICAL ACTIVITY

Abstract

The article is devoted to elucidating the threshold of soda toxicity and the amount of salts for different groups of microorganisms. As a result of studies, it was found that the microflora of soils is more resistant to soda than higher plants. However, with an increase in the concentration of soda, over 0.05 %, the number of ammonifiers, nitrogen fixers, and nitrifiers decreases. This may adversely affect the nitrogen regime of soils.It was also found that with a decrease in the amount of salts, the number of microorganisms increases. The development of microscopic fungi is subject to the same regularity, but in the variant with highly saline soil, they still continue to grow. An increase in the concentration of salts on their abundance has no significant effect. Denitrifying bacteria, like microscopic fungi, do not respond to an increase in salt concentration. An increase in soil salinity inhibits the growth of nitrogen fixatives and sulfate-reducing bacteria.

About the Authors

M. A. Ibraeva
Kazakh U Uspanov Research Institute of Soil Science and Agricultural Chemistry
Kazakhstan


D. E. Shauharova
Kazakh National Agrarian University
Kazakhstan


M. . Dzhumanova
Kazakh National Agrarian University
Kazakhstan


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Review

For citations:


Ibraeva M.A., Shauharova D.E., Dzhumanova M. INFLUENCE OF SOIL SALINITY ON MICROBIOLOGICAL ACTIVITY. Soil Science and Agrichemistry. 2020;(2):71-78. (In Russ.)

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ISSN 1999-740X (Print)
ISSN 2959-3433 (Online)