• Title, Summary, Keyword: 살충제

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(1) 살충제는 해충을 어떻게 죽이나?

  • 이승찬
    • The Bimonthly Magazine for Agrochemicals and Plant Protection
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    • v.10 no.4
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    • pp.68-73
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    • 1989
  • 살충제는 그 종류가 많고 또 그 종류에 따라 작용기구도 다르기 때문에 화학적 계열이 서로 다른 각 살충제의 작용기구를 이해한다는 것은 그 약제를 보다 유효하고 합리적으로 사용하는데 있어 큰 지침이 된다. 또한 방제 효과를 저하시키는 원인이 되고있는 해충의 살충제에 대한 저항성 발달은 살충제의 작용 기구와는 어떤 상관이 있으며 그 방제대책은 무엇인지 이번호부터 2회에 걸쳐 소개한다.

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기고 - 살충제 저항성관리를 위한 원칙 - 연속세대에 걸친 연용살포 저항성발현 가능성 높여 -

  • Park, Ung
    • Life and Agrochemicals
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    • pp.38-40
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    • 2010
  • 서로 다른 계통의 살충제 교호살포를 추천한다. 그 이유로는 한 개체군내에서 저항성이 일반적으로 일정하게 발현되는 것이 아니기 때문에 다른 계통의 살충제를 교호살포하여 예견된 저항성을 사전에 효과적으로 지연 또는 방지하는데 그 목적이 있다.

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Effects of Sublethal Concentration of Insecticides On the Pupal Duration, Emergence, Adult Longevity and Oviposition of Tobacco Cutworm, Spodoptera litura (Fab.) (Lepidoptera : Noctuidae) (담배거세미나방의 유충에 처리된 살충제 아치사농도가 용기간, 우화율, 성충수명 및 산란에 미치는 영향)

  • 배순도;김현주;홍연규;조현제
    • Korean journal of applied entomology
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    • v.43 no.2
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    • pp.175-180
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    • 2004
  • This study was conducted to determine the effect of sublethal concentrations ($LC_{10}$ and $LC_{30}$) of insecticides on pupal duration, emergence, adult longevity and oviposition of tobacco cutworm, Spodoptera litura Fabricius, when 3rd instar larva of tobacco cutworm was treated with insecticides of chlorpyrifos, ethofenprox, chlorfenapyr-bifenthrin and hexaflumuron-chlorpyrifos . Pupal duration of female and male were 6.9 days and 8.0 days at untreatment, and were 7.2 to 7.6 days and 8.3 to 8.6 days at insecticide treatment, respectively. Thus pupal duration at the insecticide treatment was slightly longer than that at the untreatment, and that of the males was slightly longer than that of the females even though significant difference between sublethal concentrations and among insecticides was not observed. Percent mergence was 88% at untreatment and ranged from 79% to 95%, in particular which showed above 91% treated with chlorfenapyr-bifenthrin and ethofenprox, at insecticide treatment. Adult longevity was 7.7 days and 7.9 days for female and male at untreatment respectively, and 7.1 to 8.4 days for female and 7.7 days to 9.0 days for male at treatment. There was a significant difference between insecticides and sublethal concentrations of insecticides except showed the longest adult longevity at hexaflumuron-chlolfyrifos treatment. Total number of eggs laid were less at treatment (778-948) than that (1,010) at untreatment regardless of sublethal concentrations of insecticides. Accordingly the pupal duration and oviposition of tobacco cutworm were affected at the insecticide treatment of sublethal concentration.

Differentiation in Feeding Behaviour of Biotypes B and Q of Bemisia tabaci (Homoptera: Aleyrodidae) against Three Insecticides (3종의 살충제에 대한 담배가루이 Biotype B와 Q의 섭식행동 비교)

  • Seo, Mi-Ja;Yang, Jeong-Oh;Yoon, Chang-Mann;Youn, Young-Nam;Kim, Gil-Hah
    • Korean journal of applied entomology
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    • v.46 no.3
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    • pp.401-408
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    • 2007
  • The feeding behaviors of 2 biotypes (type B and Q) of tobacco whitefly, Bemisia tobaci, were monitored using EPG technique on tomato and pepper plants treated 3 insecticides for controlling whiteflies, for examples, acetamiprid, spinosad and thiamethoxam. After treatment of three insecticides with recommended concentrations to tomato and pepper plants, EPG waveforms were recorded during 6 hours. The characteristic patterns of feeding behaviors investigated were as follows; time consumed by withdrawal of proboscis, total non-penetration time, total stylet pathway pattern time and total phloem feeding time. There was somewhat difference among 3 insecticides tested. As a result of investigation of total duration showed the stylet pathway activity due to the reaction against all tested insecticides, the Q biotype showed fewer time than those from the B biotype. The B biotype showed more frequent stylet pathway activity patterns during whole recording time and a shorter phloem ingestion time than those from the Q biotype. In result of prior up (non-penetration) time representing the reaction against the insecticide treated, the time of B biotype was more faster than that of the Q biotype, so it was considered that the B biotype was more sensitive to the tested insecticides. Therefore, our results revealed a clear difference in feeding behaviour between the B and Q biotypes of B. tabaci. Also, it was investigated that B biotype was susceptible to the 3 insecticides.

Biological Monitoring of the Exposure Level of Organophosphorus and Pyrethroid Pesticides in Floriculture Workers and Florists (화훼작업 종사자의 유기인계 및 피레스로이드 살충제 노출에 대한 생물학적 모니터링)

  • Song, Jae Seok;Kwon, Ki Doo;Choi, Hong Soon;Yu, Ho Young
    • The Korean Journal of Pesticide Science
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    • v.18 no.1
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    • pp.41-47
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    • 2014
  • This study was performed to evaluate the exposure level of organophosphorus and pyrethroid pesticide to floriculture workers and florists. The urinary dialkylphosphates, metabolites of organophosphorus insecticides, including dimethylphosphate (DMP), diethylphosphate (DEP), dimethylthiophosphate (DMTP), diethylthiophosphate(DETP) and pyrethroids of metabolites, cis/trans DCCA, DBCA, and 3-PBA were analysed to evaluate the exposure of organophosphorus and pyrethroid pesticide to floriculture workers and florists. The concentration of DMP is highest in floriculture workers. but the concentration of DETP is highest in retail florist. The concentration of 3-PBA is highest in floriculture workers. The amount of organophosphorus and pyrethroid pesticide expusure is highest in flower workers, wholesale florist and retail florists are followed. The management for reducing pesticide exposure to floriculture workers and wholesale florist is required.

Selection of Low Toxic Chemicals among 47 Pesticides Used in Cucumber for Aphid Predator, Aphidoletes aphidimyza Rondani (Diptera: Cecidomyiidae) (진디혹파리에 대한 오이에 등록된 47종 살충제의 저독성 농약 선발)

  • Choi, YongSeok;Nam, YunGyu;Hwang, InSoo;Han, IkSu;Park, DeokGi
    • Korean journal of applied entomology
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    • v.52 no.3
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    • pp.161-169
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    • 2013
  • From the results achieved by the evaluation of toxicities to an aphid predator, Aphidoletes aphidimyza Rondani eggs with 47 pesticides used for cucumber farming, 22 pesticides including emamectin benzoate showed low toxicity. 12 pesticides with flonicamid among 22 pesticides tested on eggs showed low toxicity (mortality, 0~2.7%) to A. aphidimyza lavae and indoxacarb + teflubenzuron and chlorantraniliprole showed toxicity of 35.4% and 64.6%, respectively. 14 pesticides including indoxacarb + teflubenzuron and chlorantraniliprole demontrating low toxicity against A. aphidimyza lavae showed low toxicity to A. aphidimyza pupae and adults as well.