섬유

pesticide-microbial interaction in the soil

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 244
soils collected from the gezira irrigation scheme in sudan were incubated with five pesticides (pyrolan, $alpha$ -and $beta$ -endosulphan, $gamma$ -hch and dieldrin), using three independent methods. endosulphan isomers were degraded by soil micro-organisms to a much greater extent than pyrolan, dieldrin or $gamma$ -hch when applied at low concentration (280 ppm), $alpha$ -endosulphan was broken down by both bacteria and fungi; whereas, $beta$ -endosulphan was degraded mostly by bacteria and dieldrin was utilized by fungi. however, at high concentration (4000 ppm), $gamma$ -hch increased the growth of micro-organisms (gram positive bacilli); but at this high concentration, the other pesticides inhibited all micro-organisms in the gezira soil. 33 refs
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