Effect of Aldicarb on a Non-Target Soil Microorganism

Abstract

The effect of aldicarb, a systemic, soil applied pesticide, on the growth, carbon and phosphate metabolism of the soil-dwelling tomato will pathogen, Posudomonas solanacearum Smith, was studied. The in vitro growth of the organism was significantly affected at 5 and 10 ppm concentrations of the chemical while at I ppm the insecticide did not have much effect on the growth. In presence of C-glucose in the medium, the insecticide treated cells incorporated more of C activity although the cell yields were less than the untreated cells, More Clable was found to have been assimilated in the cold- TCA soluble fraction while the C incorporation was less in the insoluble protein fraction of the aldicarb treated cells. However, the incorporation of C-sodium acetate by these cells was enhanced in the lipid fraction with a reduction in Clable in alcohol soluble, hot-TCA soluble and insoluble fractions. The enhancement in the incorporation of p-labelled disodium hydrogen phosphate by the aldicarb treated cells indicated that the oxidative phosphorylation or electron transport chain of the bacterium was not affected.

DOI

https://doi.org/10.29321/MAJ.10.A03335

Pages

509 - 514

Creative Commons

Copyright

© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords