• Title/Summary/Keyword: 생물농약

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Growth analysis of leaf lettuce in different average daily temperatures (일평균온도에 따른 상추 생체중 증가 해석)

  • 문보흠;조일환
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 2002.11a
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    • pp.262-269
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    • 2002
  • 환경오염에 대한 우려가 증가하면서 청정 채소의 요구도 높아지는 추세이며, 최근 양액재배를 통하여 저농약 및 저화학비료 작물 생산에 대한 관심도 증가하고 있다. 특히 주로 잎을 생식하는 상추를 포함한 쌈 채소류는 농약이나 중금속에 오염되었을 경우 인체에 미치는 영향이 심각하고, 다른 작물에 비해 생육속도가 빠르기 때문에 그 흡수량 또한 급속히 일어난다. (중략)

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Residual Patterns of Acaricides, Etoxazole and Flufenoxuron in Apples (살응애제 Etoxazole 및 Flufenoxuron의 사과 중 잔류양상)

  • Hwang, Jeong-In;Kim, Jang-Eok
    • The Korean Journal of Pesticide Science
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    • v.18 no.2
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    • pp.61-68
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    • 2014
  • Dissipation constants and half-lives of acaricides etoxazole and flufenoxuron in apples were calculated to establish their pre-harvest residue limits (PHRLs). The acaricides were sprayed on apples with single and triple doses based on safe use guidelines, and their residual patterns in the apple were interpreted using first order kinetics equation. The residual amounts of acaricides during the experimental period were below their maximum residue limits (MRL) for apple. The dissipation constants of acaricides in the apples were calculated at 0.0788 for etoxazole and 0.0319 for flufenoxuron corresponding to their biological half-lives; 8.8~21.7 days for etoxazole and 21.7~23.1 days for flufenoxuron. The PHRLs of acaricides in the apple showed the residual amounts of etoxazole and flufenoxuron at the harvesting date would be below their MRLs if their residual amounts were less than 0.87 and 0.88 mg/kg, respectively, at 7 days prior to harvesting the apples.

Collembolan Species in Environmental Studies (환경연구에서의 톡톡이 이용)

  • Park, Eun-Kee;Lee, Sung-Eun;Lee, Hoi-Seon;Kim, Jang-Eok
    • The Korean Journal of Pesticide Science
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    • v.5 no.4
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    • pp.1-10
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    • 2001
  • Some phenomena in which insects can demonstrate environmental changes by xenobiotics are easily and simply evaluated. On this regard, general guidelines for environmental studies using insects as biomarkers which determine the effects of such changes are suggested. Insects include three-quaters of all living animal species. This diversity comprises many closely related species which may respond sole to environmental changes by xenobiotics. Insects have been used for assessing adverse effects of environmental changes by xenobiotics, especially pesticides. Collembolan species are widely used as physiological and behavioral biomarkers for the assessment of adverse effects caused by pesticides on soil environment. This review aims to evaluate tile possible use of Korean Collembolan species based upon their response to environmental changes in Korean soil mainly caused by pesticides for crop protection.

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주요 식물 세균병

  • 농업과학기술원 농업생물부 식물병리과
    • Agrochemical news magazine
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    • v.25 no.5 s.198
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    • pp.41-43
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    • 2004
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