• Title/Summary/Keyword: 아세타미프리드

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Seasonal Occurrences and Timing for Chemical Control of Rhopalosipnum rufiabdominalis (Sasaki) (Homoptera: Aphididae) in Japanese Apricot (붉은테두리진딧물(Rhopalosipnum rufiabdominalis (Sasaki))에 의한 매실나무 신초 피해 및 방제적기)

  • Chung, Bu-Keun
    • Korean journal of applied entomology
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    • v.49 no.3
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    • pp.261-264
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    • 2010
  • Occurrences of Rhopalosipnum rufiabdominalis damage in the leaves of Japanese apricots were observed in Hadong, Gyeongnam Province, a major producing area. R. rufiabdominalis occurred from early May to mid October, with the peak occurrence of damaged leaves in mid May. To find proper timing of chemical control against R. rufiabdominalis, acetamiprid WP was sprayed weekly from 3 April, before budbreak, to 8 May in 2007. The best time for control R. rufiabdominalis was on 17 April 2007, at which the leaves were still tender and developing up to 3 to 5 leaves.

Susceptibility of Pine Wood Nematode Vectors to ULV Insecticides Sprayed from an Unmanned Helicopter (무인항공기를 활용한 유인항공기용 작물보호제에 대한 소나무재선충 매개충의 약제 감수성)

  • Kim, Junheon;Nam, Sangjune;Song, Jinyoung
    • Korean journal of applied entomology
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    • v.59 no.2
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    • pp.83-91
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    • 2020
  • We assessed efficacy of spraying pesticides from an unmanned helicopter to control two insect species, Monochamus alternatus and M. saltuarius, which are vectors of pine wood nematodes. Control efficacy of thiacloprid FL (33×), acetamiprid ME (33×), and flupyradifurone SL (33×) was determined by placing caged insects in the canopy of pine trees (Pinus sp). Water-sensitive paper was used to record the spray pattern of pesticide droplets and the degree of coverage; furthermore, we investigated peripheral scattering due to spraying. The three pesticides showed > 96% control efficacy against the targeted vectors, and pesticide droplet spray patterns were similar. Peripheral scattering was observed up to 20 m in front and 10 m to the left, right, and behind the targeted area. The coverage index of all the directions at 5 and 10 m distance was 6-7 and 2, respectively.

Seasonal Development and Control of Parthenolecanium corni in Blueberry Shrubs (블루베리에 발생하는 말채나무공깍지벌레의 계절적 발육과 방제)

  • Lee, Seok-Min;Chung, Bu-Keun;Kang, Dong-Wan;Park, Kyung-Mi;Han, In-Young;Kwon, Jin-Hyeuk;Lee, Heung-Su
    • Korean journal of applied entomology
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    • v.60 no.4
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    • pp.403-415
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    • 2021
  • Seasonal development of Parthenolecanium corni was observed from 4 Jun. 2019 (nymph) - 25 Jun. 2020 (1st Gen. nymph) in blueberry shrub in Sacheon city, Gyeongsangnam-do. To investigate their development, more than 5 twigs sprouted in 2018 were taken from the farm nearly weekly basis. The development of each scale were examined under the stereomicroscope and chemical control was conducted in the blueberry shrub with available three insecticides. The results on the development period and Centigrade Degree-Days accumulation (DDC) obtained are as follows: egg-laying period (peak): 12 -26 May 2020 (24 May)(DDC, 110.0-188.5 (173.6)); egg-hatching period (peak): 9 - 23 June 2020 (19 June)(DDC, 325.2-480.8(435.6); egg period: 26 days; nymph movement from overwintered adult to new leaves 16-25 June 2020 (DDC, 410,5-500.4); nymph movement from leaf to twig (peak) to become adult: 4-18 Feb. 2020 (8 Feb.). Eggs no. /adult (range): 956.8 ± 73.4 (13 - 3497). Size (mm) of egg, 0.29 ± 0.020(L), 0.15 ± 0.013(W); of egg-hatched nymph, 0.35 ± 0.018(L), 0.18 ± 0.007(W), 0.09 ± 0.007(eye distance); and of adult, 4.30 ± 0.893(L), 2.64 ± 0.520(W). The egg-hatched nymphs from the overwintered adult moved to the backside leaf of new shoot in which they found about 95% until leaf is falling by early February in next year. They overwintered as 2nd instar and occurred univoltine. For the control of the 1st instar crawler, three insecticides treated on 16 and 30 July at the registered dose for Ceroplastes japonicus. Acetamiprid 8WP showed 96.9% mortality at 21 days after 1st treatment.

Chemical control of Sycamore Lace Bug, Corythucha ciliata(Say) (버즘나무방페벌레의 약제방제(藥劑防除)에 관(關)한 연구(硏究))

  • Kim, Chul-Su;Park, Ji-Doo;Byun, Byung-Ho;Park, Il-Kwon;Chae, Chung-Suck
    • Journal of Korean Society of Forest Science
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    • v.89 no.3
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    • pp.384-388
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    • 2000
  • For the control of Corythucha ciliata, the insecticidal activity of five commercial pesticides (Monocrotophos 25%SL, Phosphamidon 50%SL, Imidacloprid 20%DC, Thiamethoxam 15%DC and Acetamiprid 20%SL) were examined with trunk injection method in Seoul, Sanbon and Chungju. The insecticidal activity of five commercial pesticides was >88%. The insecticidal activity of Monocrotophos maintained 31 days later after trunk injection when treated leaves were supplied to this pest. This result indicates that one application of trunk injection is enough to control this pest, and this method can save the control cost compared with ground application which should be applied two or three times per year to control this pest. To make the model of treatment dosage at each D.B.H class (cm), $1.0m{\ell}/DBH$, $1.5m{\ell}/DBH$ and $2.0m{\ell}/DBH$ pesticide dosage was used. At <20cm, the insecticidal activity of $1.0m{\ell}$ dosage was >95%, and $1.5-2.5m{\ell}$ dosage was needed for the effective control at 30~50cm. More than $2.5m{\ell}$ dosage was effective at >50cm. Spray method was used in laboratory to select pesticides for ground application. Three commercial pesticides (Ethofenprox 20%EC, Ethofenprox 10%WP and Cyfluthrin 1%EC) were used, and all pesticides showed >95% insecticidal activity.

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Chemical and toxicological properties of controlled release granular formulations of acetamiprid using wax matrix (왁스매트릭스를 이용한 방출조절헝 acetamiprid 입제의 화학적, 독성학적 특성)

  • Lee, Weon-Kee;Yang, Kyung-Hyung;Lee, Chang-Hyuk;Lee, Seung-Il;Hwang, In-Cheon
    • The Korean Journal of Pesticide Science
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    • v.9 no.3
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    • pp.243-249
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    • 2005
  • The chemical and toxicological studies were conducted with acetamiprid 2% granules including different controlling agents for development of controlled-release acetamiprid 2% granule. The fundamental formulation recipe of acetamiprid 2% granule was prepared by the insoluble matrix using polyethylene wax. Starch, cellulose and mineral (calcium carbonate) were used as controlling agents. As a result of studies, release rate of active ingredient from granules into water static condition at $25^{\circ}C$ was increased by addition of starch and cellulose, but was decreased by addition of calcium carbonate. We could select calcium carbonate as controlling agent and make three granules which there were difference in release profiles of active ingredient according to contents of polyethylene wax. 24 hours-release rates of acetamiprid from three granules into water static condition at $25^{\circ}C$ were respectively 75, 50 and 25% when contents of wax were 2, 10 and 20%. The granule which 24 hours-release rate was 25% showed lower acute toxicity against mice and rats.

Enhancement of Insecticidal Activity of the Acetamiprid Soluble Concentrate using a Photostabilizer (광안정제를 이용한 acetamiprid 액제의 살충효과 증진)

  • Kim, Hyeong-Min;Lee, Weon-Kee;Kim, Jong-Kwan;Seok, Chang-Su;Lee, Chang-Hyuk;Yu, Yong-Man;Hwang, In-Cheon
    • The Korean Journal of Pesticide Science
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    • v.10 no.3
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    • pp.210-217
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    • 2006
  • The study was carried out to select the effective adjuvant as a photostabilizer for acetamiprid 5% SL(soluble concentrate) and to find its optimum content by using chemical and biological methods. Adjuvants used for the study were KS1 and KS2. Photodegradation test, insecticidal efficacies and residual analysis for the study were investigated. Although photodegradation rate of acetamiprid SL was decreased by addition of KS1 and KS2, the difference between KS1 and KS2 was not significant. As KS2 showed better efficacies against the cotton aphid (Aphis gossypii) and higher amount of residue on pepper than KS1, KS2 was selected as a photostabilizer for acetamiprid SL. Acetamipid SL with KS2 showed lower photodegradation rate, better efficacies against the cotton aphid (Aphis gossypii) and higher amount of residue on pepper as content of KS2 in acetamiprid SL was decreased. Therefore, it was concluded that the optimum content of KS2 was 0.1%. These results have demonstrated that the selected adjuvant could be used to enhance insecticidal activity and reduce spay dose of insecticide by protecting its photodegradation.