• Title/Summary/Keyword: 농약 독성

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농업기술 - 단삼 재배기술

  • Kim, Yeong-Guk
    • 농업기술회보
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    • v.46 no.4
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    • pp.42-43
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    • 2009
  • 단삼(Salvia miltiorrhiza Bunge)은 꿀풀과의 여러해살이풀로 줄기는 높이가 30$\sim$100cm이고 가지가 많으며, 전체에 털이 나 있다. 한약재로 이용되는 단삼뿌리는 관상동맥 확장, 혈압강하 작용이 있고, 혈액순환을 증진시키며 심혈관 질환치료에 도움이 되는 것으로 알려져 있다. 한약재의 농약잔류독성, 중금속 등에 대한 안전한 힌약재 선호추세에 따라 전량 수입에 의존하는 약용잔물인 단삼의 재배기술을 소개하고자 한다.

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복분자, 수확기 장마철 겹쳐 품질저하 우려 - 배수로 정비하고 비 갠틈타 따내야

  • 한국생약협회
    • The Hankook-Saengyark Bo
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    • no.260
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    • pp.5-5
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    • 2004
  • '황기 다년재배 비료 안쓰면 유리'(4년근 생존율 33$\%$로 높아지고 수량 늘어) - 도열병 워크숍 7월13$\~$14일 - 천적에 피해 안주는 농약 선발(농과원, 저독성 살충제$\cdot$살균제 밝혀 - '장뇌 품질기준$\cdot$규격 제정등 시급'(산양산삼 학술대회서 제기)

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Evaluation of Acute and Residual Toxicity of Insecticides Registered on Strawberry against Honeybee (Apis mellifera) (딸기에 등록된 살충제의 꿀벌에 대한 급성 및 엽상잔류독성)

  • Ahn, Ki-Su;Yoon, Changmann;Kim, Ki-Hyun;Nam, Sang-Young;Oh, Man-Gyun;Kim, Gil-Hah
    • The Korean Journal of Pesticide Science
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    • v.17 no.3
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    • pp.185-192
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    • 2013
  • This study was performed to evaluate the spray toxicity and leaf residual toxicity of 52 kinds of insecticides registered for strawberry against adult honeybee Apis mellifera. According to the IOBC standard, the acute toxicity by spraying showed below 30% was classified as non-toxic. Among tested insecticides, 32 insecticides (flonicamid, lufenuron, novaluron, three kinds of acetamiprid, thiacloprid, milbemectin, acequinocyl, TBI-1, two kinds of chlorfenapyr, chlorfluazuron, cyenopyrafen, cyfumetofen, etoxazole, fenpyroximate, flubendiamide, flufenoxuron, hexythiazox, metaflumizone, two kinds of methoxyfenozide, DBB-2032, pyridalyl, spiromesifen, tebufenpyrad, teflubenzuron, acetamiprid + methoxyfenozide, acrinathrin + spiromesifen, bifenazate + spiromesifen, cyenopyrafen + flufenoxuron) did not show any toxic effect, it is thought to be safe. And the others (20 insecticides) showed higher toxicity to honeybee. Insecticides which showed acute toxicity higher than 90% was selected and tested the residual toxicity. All insecticides except emamectin benzoate EC, and indoxacarb SC showed 100% mortality at one day after treatment (DAT). However, the toxicities of emamectin benzoate, indoxacarb SC, and abamectin did not show until 3, 7, 14 DAT, respectively. Nine insecticides such as indoxacarb WP, thiamethoxam WG, abamectin + chlorantraniliprole SC, acetamiprid + etofenprox WP, acetamiprid + indoxacarb WP, bifenthrin + clothianidin SC, bifenthrin + imidacloprid WP, bifenazate + pyridaben SC, chlorfenapyr + clothianidin SC showed over 90% residual toxicity until 31 Day. In pouring treatment, thiamethoxam WG showed 76.9% mortality at 28 DAT and 50.0% mortality at 31 DAT. After 35 days, thiamethoxam WG showed no effect to honeybee. Bifenthrin + clothianidin SC and tefluthrin + thiamethoxam GR showed 57.1 and 80.0% mortality at 24 DAT, respectively. In spraying treatment, thiamethoxam WG and bifenthrin+clothianidin SC showed very high residual toxicity with 100% mortality in thirty-five DAT. After spraying treatment with thiamethoxam WG, bifenthrin+clothianidin SC, bifenthrin + imidacloprid WP, thiamethoxam WG showed 100% residual toxicity until 21 DAT and there was no activity after 28 DAT. Bifenthrin+clothianidin SC and bifenthrin+imidacloprid WP showed very high residual toxicity until 49 DAT.

Reactive Intermediates and Reaction Mechanisms in the Oxidative Metabolism of Organophosphorus Compounds (유기인계 화합물의 산화대사중 반응성 중간체와 반응기작에 관한 고찰)

  • Kim, Jeong-Han;Toia, Robert F.;Park, Chang-Kyu
    • Korean Journal of Environmental Agriculture
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    • v.15 no.2
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    • pp.246-261
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    • 1996
  • Organophosphorus pesticides, which are an important part of synthetic pesticides in current use contain sulfur atom in their molecules and can be activated or detoxified by environmental and/or biological metabolism. Among the related metabolic reactions, oxidative processes are particularly important with their final products and the study on the reactive intermediates formed in those reactions is essential to elucidate the metabolic pathways and mechanisms and to understand the toxicological properties. This review dealt with the reactive intermediates formed in various reactions from the structural and mechanistic point of view for organophosphorus pesticides and related compounds.

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Toxicological effects of pesticides on loach in rice paddy (벼 재배 논 서식 미꾸리에 대한 농약의 영향)

  • Park, Yeon-Ki;Park, Kyeong-Hoon;Joo, Jin-Bok;Kyung, Kee-Sung;Kim, Byung-Seok;Shin, Jin-Sup;Ryu, Gap-Hee;Bae, Chul-Han;Lee, Kyu-Seung
    • The Korean Journal of Pesticide Science
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    • v.7 no.2
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    • pp.131-138
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    • 2003
  • A toxicological study of the pesticides for rice paddy to loach was conducted with iprobenfos 17% GR, diazinon 3 % GR, and butachlor 5 % GR to establish the field test method and their toxicological effects on loach under the actual field conditions. The type C of cage was more effective in the sense of a little stress from the cage. The nets for shading and for preventing the birds were necessary to maintain the water temperature and to prevent the predators. The cumulative mortality of loach exposed to iprobenfos 17% GR, diazinon 3% GR and butachlor 5% GR were 10, 55 and 22%, respectively, during 7 days of exposure. The averaged concentration of the pesticides in paddy water 2 days after application were 1.67, 0.22 and 0.26 mg/L, and mortalities were 7, 50 and 17%, respectively, representing the similar results with acute toxicity $(48h-LC_{50})$.

Effect on antioxidant function of onion to reduce pesticides toxicity (양파의 항산화기능을 이용한 농약 독성경감 효과)

  • You, Are-Sun;Jeong, Mi-Hye;Park, Kyung-Hun;Kim, Byung-Seok;Lee, Je-Bong;Choi, Ju-Hyeon;Kwon, Oh-Kyung;Kim, Jin-Hwa
    • The Korean Journal of Pesticide Science
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    • v.11 no.4
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    • pp.222-229
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    • 2007
  • It is well known the functional foods are very useful to prevent serious diseases and promote health. Therefore, they are often called as nutraceuticals, designer foods, and pharmafoods, etc. Most of foods have diverse functions because they provide nutrients, energies and fibrinoid materials. When foods are taken in the body, they promote the biological defense system against diseases through the supply of the essential or healthy materials to human being's organs. The mode of action and functional foods in human body have not been clarified yet. Antioxidant is known as one of the therapeutic aids which can be reduced pesticide poisoning. Onion has a strong antioxidant effect. This study was carried out to elucidate an antioxidant function of onion by determination of superoxide dismutase in liver, lung, serum of male rat administered by intraperitonial injection of 0, 2, $4\;mg\;kg^{-1}$ cblorpyrifos after administrated orally with onion for 6 weeks. Damage of liver and kidney was also investigated by biochemical analysis of serum(AST, ALT, BUN/Creatine ratio). SOD(superoxide dismutase) activity of onion-administrated group is higher than control group. In liver and lung, SOD activity of onion+cblorpyrifos administrated group is higher than only chlorpyrifos administrated group. BUN/Creatinine ratio of onion+chlorpyrifos administrated group was decreased compared with only chlorpyrifos-administrated group.

Comparison of toxicity and detoxifying enzyme activity in carp (Cyprinus carpio) treated with some synergistic pesticides (농약 상호간의 협력작용에 의한 잉어의 독성과 해독효소 활성의 비교)

  • Yang, Kwang-Rok;Shim, Jae-Han;Suh, Yong-Tack
    • Applied Biological Chemistry
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    • v.35 no.5
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    • pp.367-374
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    • 1992
  • This study was performed to investigate effects of probable detoxifying enzyme activity and toxicity by pesticides and their combinations in the fresh water fish. Seven pesticides including IBP, isoprothiolane, cartap, ridomil, chlorothalonil, captafol and endosulfan were subjected to investigate for their acute toxicites and synergism possibilities. The $LC_{50}$ value of endosulfan was the lowest at showing 0.0079 ppm and that of metalaxyl was the highest as showing 40 ppm over. The synergism effects of relative pesticides were observed in the combinations of isoprothiolane+IBP and isoprothiolane+cartap. The changes of glycogen contents in fish liver were assayed for 5 pesticides and its highest inhibition effect of glycogen showed in IBP treated fish. The activity of probable detoxifying enzymes including carboxylesterase (CE), glutathion S-transferase (GST) and lactate dehydrogenase (LDH) were assayed in carp liver at dose of sublethal concentrations. Effects of pesticides on changes in each enzyme activities were as follows: carboxylesterase (CE) activities were the highest in IBP and gtutathion S-transferase (GST) activities were the highest in iosoprothiolane+IBP. Both activities of carboxylesterase (CE) and glutahtion S-transferase (GST) were increased by 5 chemicals. The highest LDH activity showed in isoprothiolane treated fish, while the lowest activity was observed in isoprothiolane+cartap. Sublethal exposure to cartap and isoprothiolane+cartap in carp exerted various effects on LDH activity.

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Fumigant Toxicity of Essentail Oils and Agricultural Materials against Moechotypa diphysis Pascoe (Coleoptera: Cerambycidae) (털두꺼비하늘소에 대한 식물정유와 농자재의 훈증독성)

  • Ahn, Hee-Geun;Noh, Doo-Jin;Yang, Jeong-Oh;Yoon, Chang-Mann;Kim, Gil-Hah
    • The Korean Journal of Pesticide Science
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    • v.12 no.3
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    • pp.302-306
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    • 2008
  • This study was performed to investigate the contact toxicity, fumigant toxicity, and synergistic effect using agricultural materials (AM) when mixed with selected essential oils against oak longicorn beetle, Moechotypa diphysis. Four kinds of AM, namely, chungkiller, ungsalta, jinap, purunjunsa showed 100% contact toxicity at one day after treatment. Subsequently, four AM was tested the fumigant toxicity during 24 hours. At concentration of 1 mL, jinap and chungkiller showed 100% mortality at 3 hr after treatment, prunjunsa and ungsalta showed 100% mortality at 6 hr after treatment. When applicate to the small vinyl bag (15 L), all AM (50 mL/15 L) was showed 100% mortality. Jinap showed the mortality 100% when mixed pennyroyal oil with the ratio of 5+1. It was higher than single treatment.