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Pesticide Degradation Activity of Several Isolates of Soil Bacteria and Their Identification  

Park, Kyung-Hun (Department of Crop Life Safety, National Institute of Agricultural Science and Technology(NIAST), Rural Development Administration (RDA))
Lee, Young-Kee (Department of Agricultural Biology, NIAST, RDA)
Lee, Su-Heon (Department of Agricultural Biology, NIAST, RDA)
Park, Byung-Jun (Department of Crop Life Safety, National Institute of Agricultural Science and Technology(NIAST), Rural Development Administration (RDA))
Kim, Chan-Sub (Department of Crop Life Safety, National Institute of Agricultural Science and Technology(NIAST), Rural Development Administration (RDA))
Choi, Ju-Hyeon (Department of Crop Life Safety, National Institute of Agricultural Science and Technology(NIAST), Rural Development Administration (RDA))
Uhm, Jae-Youl (College of Agricultural Biology, Kyungpook National University)
Publication Information
The Korean Journal of Pesticide Science / v.10, no.2, 2006 , pp. 138-148 More about this Journal
Abstract
Two bacteria were isolated from the continuously pesticide-used soil under plastic film house and upland condition. The degradation test of several pesticides by the selected bacteria, B59 and B71, were conducted. The degradation rates for 6 pesticides, procymidone, chlorothalonil, ethoprophos parathior, alachlor and pendimethalin, in medium by the isolates were 21.1% to 53.2% higher than non-inoculated medium. Under shaking culture condition, 90% to 95% of procymidone was degraded after 21 days treatment. Parathion was degraded in the range of 60% to 100% by B71 and B59, respectively. Otherwise 70% of alachlor was degraded by the two isolated bacteria during same period. The pH was not significantly affected for degradation of pesticides. The bacterial strains, B59 and B71 was identified as Acinetobacter sp. and as Pseudomonas sp. based on morphological, biochemical and physiological characteristics, and identity and similarity of automatic identification system, Biolog and MIDI.
Keywords
alachlor; bacteria; parathion; pesticide degradation; procymidone;
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