| Autor: |
Gengadharan, Vijayalakshmi, Ramadas, V. |
| Zdroj: |
IUP Journal of Environmental Sciences; Nov2009, Vol. 3 Issue 4, p54-62, 9p, 1 Chart, 4 Graphs |
| Abstrakt: |
The total viable bacterial count and the organophosphorous insecticide (quinalphos) resisting bacterial population of the surface soil samples of rice cultivating field was taken. The total heterotrophic bacteria in the soil 81.00 × 107 CFU/g sample was observed, whereas the quinalphos resisting bacterial density was found to be 48.00 × 107 CFU/g, 4.00 × 107 CFU/g at 0.01%, 0.1% pesticide concentrations, respectively. The dominance of gram negative bacterial types was noticed in both total viable bacterial counts, pesticide resisting and degrading bacterial populations. The generic composition of pesticide resisting, degrading bacterial strains showed the higher incidence of Pseudomonas and Bacillus sp. The higher amount of phosphatase enzyme activity was exhibited at 0.1% pesticide concentration. The growth characteristics of pesticide degrading bacteria, strained at different time intervals was also investigated. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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