Effect of herbicides on microbiological properties of soil
Author(s) -
Milošević Nada,
M. Govedarica
Publication year - 2002
Publication title -
zbornik matice srpske za prirodne nauke
Language(s) - English
Resource type - Journals
eISSN - 2406-0828
pISSN - 0352-4906
DOI - 10.2298/zmspn0201005m
Subject(s) - azotobacter , microorganism , population , agronomy , environmental science , nitrifying bacteria , bioindicator , soil test , environmental chemistry , chemistry , soil water , biology , soil science , bacteria , nitrogen , nitrification , genetics , demography , organic chemistry , sociology
Microorganisms decompose herbicides and they may serve as bioindicators of soil changes following herbicide application. Certain microbial species may be used as bioherbicides. This study has shown that Azotobacter is most sensitive to herbicide application; it is, therefore, a reliable indicator of the biological value of soil. The numbers of this group of nitrogen-fixing bacteria decrease considerably in the period of 7-14 days after herbicide application. Simultaneously, the numbers of Actinomycetes and less so of fungi increase, indicating that these microorganisms use herbicides as sources of biogenous elements. Rate of herbicidal decomposition depends on the properties of the preparation applied herbicide dose as well as on the physical and chemical soil properties, soil moisture and temperature, ground cover, agrotechnical measures applied and the resident microbial population
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