• 한국환경보건학회지
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• 제6권1호
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• pp.10-21
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• 1979

In preventing the infection of Clonorchis sinensis, there is one way in which life cycle of Clonorchis sinensis is cut off by eradicating the first intermediate host viz Parafossarulus manchuoricus, with molluscicides or insecticides. This survey was carried out in order to evaluating the molluscicidal effect of several insecticides upon P. manchauricus. In this survey, diazinon, heptachlor, E.P.N., E.M., and malathion was applied as molluscidies. Those insecticides had been generaly used in farming area. The results are summarized as follows. 1) In molluscicidal effect, E.M. showed the higher molluscicidal effect than any other insecticides in all experiment parts, and the order of insecticides upon molluscicidal effect was that of E.M., E.P.N., heptachlor and malathion. 2) $LD_{50}$ values are varied according to the exposure time in insecticide solution, and the longer the exposure time is, the lower the values of $LD_{50}$ is. 3) To take the exposure time in low concentration of insecticide solution for the long time would obtain the more molluscicidal effect. 4) The mortality rate increases in proportion as the concentration of insecticides increases.

• 농약과학회지
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• 제20권1호
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• pp.66-71
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• 2016

포식성 천적 칠레이리응애에 대하여 8종 살충제들의 감수성을 검정하였다. 칠레이리응애 암컷성충은 실험약제들의 처리 168시간 후에 78-92%의 개체들이 생존하였으며, 무처리 암컷성충에 비해 62.6-93.4%의 산란수를 보였으며, 산란된 난들의 부화에 영향이 없었다. 실험약제들은 칠레이리응애 난의 부화와 약충의 생존율에 큰 영향이 없었다. 칠레이리응애의 발육태들은 실험약제들이 처리된 잎 절편에서 생존율에 큰 영향을 받지 않아, 98-100%의 개체들이 성충태에 도달하였다. 이상의 결과로 보아, 실험약제들은 해충종합관리 체계에서 칠레이리응애와 함께 활용할 수 있을 것으로 생각된다.

• 한국식품위생안전성학회지
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• 제9권4호
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• pp.185-189
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• 1994

This study was to investigate time-dependent degradation process under various pH condition for organophosphorus(org-p) insecticides, namely Demeton-s-methyl, diazinon, Parathion, Phenthoate, and EPN in several waters. They were analysed by GC-FTD according to standard methods for the examination of water and wastewater. In pH=4, diazinon showed disappearance after 14 days in chromatogram. In pH=11, org-p insecticides were almost degradable after 7 days. In this condition, effect of pH on degradation process was greater than of light. In pH=7, org-p insecticides persisted residues after 112 days except Demeton-s-methyl. In BOD5 120, 250 ppm and domestic water, org-p insecticides showed also rapid degradation process.

• 한국작물학회지
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• 제46권5호
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• pp.345-347
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• 2001

This study was conducted to evaluate the effect of insecticides on control of Spodoptera exigua, growth characteristics, and dry root yield in the cultivation of Alisma plantago after early maturing rice cropping. All pesticides treated had no effect on growth and flowering rate of Alisma plantago. The major insecticides were teflubenzuron Wp, 5%, tebufenozide Wp, 8%, iufenuron Ec, 5%, and tebufenozide Wp, 5%. Dry root yield were increased largely with tebufenozide Wp, 5%(20 g/20 l), insecticide than the other insecticides and no control. All insecticides had no injury with standard dosage. On the other hand, all insecticides had slight injury in the double dosage level for the Alisma plantago.

• International Journal of Industrial Entomology and Biomaterials
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• 제38권1호
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• pp.1-5
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• 2019

Bee's population is declining and disappearing at alarming rate. There are many factors responsible for declining the population of bees including diseases, natural enemies, environmental conditions and pesticides. Insecticides play its role dramatically for their population decline and neonicotinoid insecticides are critically important due to their wide application for pest control. Keeping in view of above problem, effect of neonicotinoid insecticides on olfactory learning behavior in Apis mellifera was observed using Proboscis Extension Reflex (PER) method. In this method, bees were harnessed in centrifuges tubes and feed on insecticides mixed sugar solution after three hours hunger. Bees were checked by feeding on non-treated sugar solution to observe PER response. Minimum proboscis extension was observed for acetamiprid and imidacloprid with 26% and 20% respectively at their recommend field doses while it was maximum for dinotefuran and thiamethoxam with 73% and 60% respectively. Only 40% bees showed response when exposed at 1/10 concentration of field dose for imidacloprid and the least at 1/100 of field dose. At control (Sugar solution) about 90% bees showed PER response. Among these neonicotinoid insecticides tested, imidacloprid and acetamiprid were the most damaging which impaired the olfactory learning performance in Apis mellifera.

• Applied Biological Chemistry
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• 제29권3호
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• pp.294-303
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• 1986

유기인계(有機燐系) 및 carbamate계(系) 살충제(殺蟲劑)의 처리(處理)로 뇨소(尿素)가 시용(施用)된 토양내(土壞內)의 효소활성(酵素活性) 및 잔류량(殘留量)의 변화(變化), 총세균수(總細菌數)에 미치는 영향(影響)을 규명(糾明)한 결과(結果)는 다음과 같았다. 살충제(殺蟲劑)가 urease와 phosphatase의 활성(活性)에는 dithioposphoric acid, thiophosphoric acid, phosphoric acid, carbamate계(系)의 순(順)으로 저해율(沮害率)이 높았으며, L-glutaminase와 protease의 활성(活性)에는 thiophosphoric acid, dithiophosphoric acid, phosphoric acid, carbamate계(系)의 순(順)으로 저해율(沮害率)이 높았다. 대체적으로 유기인계(有機燐系) 살충제(殺蟲劑)는 처리(處理) 후(後) 56일(日)째까지 약하게나마 저해현상(沮害現象)을 나타낸 반면 carbamate계(系)는 28일(日)째 이후에는 영향(影響)이 거의 없었다. Carbamate계(系) 살충제(殺蟲劑)는 protease와 L-glutaminase의 활성(活性)을 56일(日)째에 약간 증가(增加)시켰다. 뇨소(尿素)의 시용(旅用)으로 인(因)해 살충제(殺蟲劑)의 분해(分解)는 무시용구(無施用區)에 비해서 약간 촉진(促進)되었다. 토양내(土壞內)의 총세균수(總細菌數)는 살충제(殺蟲劑)의 처리(處理)로 초기(初期)에는 대조구(對照區)보다 감소(減少)되었으나 후기(後期)에는 phosphoric acid형(形)과 carbamater계(系)에서는 균수(菌數)가 약간 증가(增加)되었으나 thiophoric, dithiophosphosphoric acid형(形)에서는 계속 저해(沮害)를 받는 것으로 나타났다.

• 한국응용곤충학회지
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• 제22권2호
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• pp.67-73
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• 1983

Despite the great importance of chemical insecticides, with the ever increasing resistance of pest insects to chemical insecticides and the growing concern over environmental pollution, it becomes evident that the problem of pest attack on crops cannot be solved by anyone system. Under these circumstances, main pathogens of insects, i.e., viruses, bacteria, fungi and protozoa, have been studied to control many insect pests. Some of these pathogens are now being produced as microbial insecticides at the rate of hundreds of tons per year in the world. Some microbial insecticides are very effective against numerous or target insects under suitable environmental condition, and microbial control has been played an important role in integrated control program. They have many unique properties such as selectivity, multiplication and harmless to higher animals. However, we must be aware also that there are many problems to be solved, such as safety, persistence and difficulty of efficacy, etc_ on the microbial insecticides.

• 환경위생공학
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• 제20권3호
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• pp.44-50
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• 2005

Studies on the insecticides susceptibility of adults females Culex pipiens pallens were carried out in 2003. The pupae were emerged originated wild-caught larvae in Ansan city, Korea. The test methods employed, using 7 organophosphorous insecticides, four synthetic pyrethroides, and fipronil penyrazole were evaluated. The following results were obtained 1. Fipronil has showed the most strong value in $LD_{50}\;0.00075{\mu}g/female$, out of 12 kind of insecticides, and followed by deltamethrin 0.0071, $\delta-cyhalothrin\;0.008$, profenofos 0.0082 and $\beta-cyfluthrin$ 0.0088, respectively 2. The killing effect of lambdacyhalothrin and profenophos against adult females Culex pipiens pallens was examined using thermal fogging. The mortality rate were lambdacyhalothrin $41.1\%$ and profenophos $50.7\%$, respectively. The killing effect of thermal fogging was highly effectiveness to distance 6m from nozzle

• 한국응용곤충학회지
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• 제43권2호
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• pp.169-173
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• 2004

몇가지 살충제에 대한 파굴파리 충태별 약제 방제효과를 조사한 결과, 알 상태에서 엽면 살포시 spinosad, dimethoate, emamectin benzoate, cartap 등의 방제가가 83% 이상으로 효과적이었다. 유충에 대해서는 dimethoate와 cartap이 87% 이상의 살충활성을 나타내었다. Dimethoate와 cartap을 엽면살포 후 잔효력을 조사한 결과 dimethoate는 약제처리 후 3일까지 93.3%의 높은 활성을 유지하였다. 번데기에 대해서는 terbufos GR, cartap GR이 88.2% 이상의 살충활성을 보였으며, 성충에 대해서는 dimethoate와 cartap이 95%이상 살충활성을 나타내었다. 이상의 결과에서 알, 유충, 성충방제에는 dimethoate EC와 cartap SP, 번데기 방제에는 terbufos GR, cartap GR가 효과적이었다.

• 한국환경보건학회지
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• 제10권1호
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• pp.47-54
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• 1984

The toxicity value of 13 kinds of public health insecticides against the adult female cockroach, Periplaneta fuliginosa, Setville in Korea were evaluated by the topical application method of insecticides. The results obtained were summarized as follows 1. S-biolline showed the most strong susceptibility with LD$_{50}$ of 1.9${\mu}g$ per cockroach (1,100 mg) out of 13 kinds of insecticides and other synthetic pyrethroides insecticides (bio-resmethrin 2.8${\mu}g$/cockroach, permethrin 4.3 ${\mu}g$/cockroach) showed some degree of susceptibility to the smoky brown cockroach. 2. Fenitrothion showed 2.5 $\mu$g per cockroach which was the most strong susceptibility out of 8 kinds of organophosphorus and most of them were good susceptibile but there was clear evidence for developed resistance against malathion with LD$_{50}$ of 80.5 {$\mu}g$ per cockroach (1,100 mg). 3. Lindane showed some degree of susceptibility with LD$_{50}$ of 13.9 {$\mu}g$ per cockroach (1,100 mg) but DDT showed the most strong resistance to the smoky brown cockroach out of 13 kinds of insecticides tested.