• Title/Summary/Keyword: Amblyseius swirskii

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Biological Control of Frankliniella occidentalis(Thysanoptera: Thripidae) on Cucumber, using Amblyseius swirskii(Acari: Phytoseiidae) (오이에서 꽃노랑총채벌레(Frankliniella occidentalis)의 생물적 방제를 위한 지중해이리응애(Amblyseius swirskii) 적용 효과)

  • Kim, Hwang-Yong;Kim, Jeong-Hwan;Kang, Seung-Ho;Lee, Yong-Hwi;Choi, Man-Young
    • Korean journal of applied entomology
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    • v.48 no.3
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    • pp.355-359
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    • 2009
  • By releasing predatory mite, Amblyseius swirskii Athias-Henriot, with 25 individuals per cucumber plant in a commercial greenhouse (1,600 $m^2$), the population of western flower thrips, Frankliniella occidentalis (Pergande), was kept under the economic threshold level. The initial thrips population of 18.3 individuals per leaf decreased to 2.1 individuals per leaf after four weeks, while the number of A. swirskii reached to 16.6 individuals per leaf. It was also observed that at a point where the thrips occurred in high density of about 34.3 individuals per leaf, A. swirskii population built up on the lower part of cucumber plant first, but as time passed the predatory mites moved upward to the top of the plant and aggregated.

해외농업 - 지중해 이리응애(Amblyseius swirskii) 현지속보

  • 전국농업기술자협회
    • 농업기술회보
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    • v.47 no.5
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    • pp.31-37
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    • 2010
  • 작년 새로운 천적 지중해 이리응애가 발매 되었다. 가루이류와 총채벌레류는 이것으로 방제가 가능하고, 정착성도 좋은 슈퍼 천적이다. 현장에서의 실제효과는 어떠한지 첫 사용지역부터 살펴보자.

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Comparison on the Capability of Four Predatory Mites to Prey on the Eggs of Bemisia tabaci (Hemiptera: Aleyrodidae) (포식성 이리응애 4종의 담배가루이 알 포식능력 비교 평가)

  • Kim, Hwang-Yong;Lee, Yong-Hwi;Kim, Jeong-Hwan;Kim, Yong-Heon
    • Korean journal of applied entomology
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    • v.47 no.4
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    • pp.429-433
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    • 2008
  • On the leaf disc of fruit vegetables (cucumber, sweet pepper, tomato, egg plant, oriental melon), it has been evaluated that the capability of four predatory mites (Amblyseius swirskii Athias-Henriot, Neoseiulus barkeri (Hughes), N. cucumeris (Oudemans), N. californicus (McGregor)) to prey on the eggs of Bemisia tabaci (Gennadius) and to lay own eggs. The most aggressive mite was A. swirskii which had consumed about $9{\sim}12$ eggs in a day. The quantity of eggs consumed by N. barkeri, N. cucumeris and N. californicus was about $6{\sim}9,\;4{\sim}6$ and $1{\sim}4$, respectively. The most productive mite was also A. swirskii which had laid about $1.2{\sim}1.9$ eggs in a day. The others could not lay more than 0.5 eggs in a day.

Control Efficacy of Natural Enemies on Four Arthropod Pests found in Greenhouse Hot Pepper (시설재배 고추에 발생하는 4종의 주요 해충에 대한 천적이용 효과)

  • Kim, Jeong-Hwan;Byeon, Young-Woong;Choi, Man-Young;Ji, Chang-Woo;Heo, Su-Yeong;Park, Eun-Mi;Kang, Eun-Jin
    • Korean journal of applied entomology
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    • v.51 no.2
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    • pp.83-90
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    • 2012
  • The effect of natural enemies on four major pests of hot pepper was tested in greenhouses. The aphids were successfully controlled by introducing three Aphidius colemani-banker plants, and releasing 23.3 wasps per $m^2$ on April 16 and 23 wasps per $m^2$ in a greenhouse of 660 $m^2$. To control thrips, Orius laevigatus was released twice, 3.0 bugs per $m^2$ at a time(May $11^{th}$ and June $12^{th}$). The thrips population was controlled within 0.3 thrips per flower during the growing season. To control two species of mites, Tetranychus kanzawai and Polyphagotarsonemus latus, and the silverleaf whitefly, Bemisia tabaci, a total of 113.7 individuals of Amblyseius swirskii were released twice(May $11^{th}$ and $30^{th}$). The densities of B. tabaci and T. kanzawai were kept within 171.0 individuals/trap and 0.8 individual/leaf, respectively. P. latus was suppressed completely twelve days after release. The cost of the released natural enemies to control the four arthropod pests in this study was 420,000 Won per 660 $m^2$.

Biological Control of Insect Pests with Arthropod Natural Enemies on Greenhouse Sweet Pepper in Winter Cropping System (파프리카의 겨울작형 시설재배에서 천적을 이용한 해충 밀도억제 효과)

  • Kim, Jeong-Hwan;Byeon, Young-Woong;Kim, Hwang-Yong;Park, Chang-Gyu;Choi, Man-Young;Han, Man-Jong
    • Korean journal of applied entomology
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    • v.49 no.4
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    • pp.385-391
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    • 2010
  • This study reports the results of natural enemy application against four insect pests on greenhouse sweet pepper in winter cropping system. Orius laevigatus ($3.3/m^2$) was released at two different times (Nov. 2005 & Feb. 2006) to control Frankliniella occidentalis, western flower thrips (WFT). Throughout the cropping season, the lowest level recorded of WFT was less than 2.0 individuals per yellow sticky trap. Amblyseius swirskii ($232.3/m^2$) was released four times (Nov. 2007 ~ Aug. 2008) to control Bemisia tabaci, tobacco whitefly (TWF). Until July 2008, TWF population had been suppressed lower than 6.6/trap. Phytoseiulus persimilis ($44.5/m^2$) was released seven times (Apr. 2008 ~ Aug. 2008) to control Tetranychus kanzawai, tea red spider mite (TRSM). As a result, TRSM population was suppressed lower than 1.7/1eaf. To control aphids, Aphidius colemani ($9.5/m^2$) was released seven times (Oct. 2004 ~ Jan. 2005), with the transplantation of banker plants ($5.5pot/660m^2$). As a whole, aphid's population has been successfully reduced to less than 2.0/leaf.

Toxicity Evaluation of 'Bt-Plus' on Parasitoid and Predatory Natural Enemies (기생성 및 포식성 천적에 대한 작물보호제 '비티플러스'의 독성 평가)

  • Seo, Sam-Yeol;Srikanth, Koigoora;Kwon, Gi-Myon;Jang, Sin-Ae;Kim, Yong-Gyun
    • Korean journal of applied entomology
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    • v.51 no.1
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    • pp.47-58
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    • 2012
  • Effect of a new crop protectant 'Bt-Plus' on natural enemies was analyzed in this study. Tested natural enemies included two parasitic species of $Aphidius$ $colemani$ and $Eretmocerus$ $eremicus$, and four predatory species of $Harmonia$ $axyridis$, $Orius$ $laevigatus$, $Amblyseius$ $swirskii$, and $Phytoseiulus$ $persimilis$. 'Bt-Plus' was formulated by combination of three entomopathogenic bacteria ($Xenorhabdus$ $nematophila$ (Xn), $Photorhabdus$ $temperata$ subsp. $temperata$ (Ptt), $Bacillus$ $thuringiensis$ (Bt)) and bacterial metabolite (BM). All three types of 'Bt-Plus' showed significantly higher toxicities against fourth instar $Plutella$ $xylostella$ larvae than Bt single treatment. Two types of bacterial mixtures ('Xn+Bt' and 'Ptt+Bt') showed little toxicity to all natural enemies in both contact and oral feeding assays. However, 'BM+Bt' showed significant toxicities especially to two predatory mites of $A.$ $swirskii$ and $P.$ $persimilis$. The acaricidal effects of different bacterial metabolites were evaluated against two spotted spider mite, $Tetranychus$ $urticae$. All six BM chemicals showed significant acaricidal effects. The BM mixture used to prepare 'Bt-Plus' showed a high acaricidal activity with a median lethal concentration at 218.7 ppm (95% confidence interval: 163.2 - 262.3). These toxic effects of bacterial metabolites were also proved by cytotoxicity test against Sf9 cells. Especially, benzylideneacetone, which was used as a main ingredient of 'BM+Bt', showed high cytotoxicity at its low micromolar concentration.

Biological Control Based IPM of Insect Pests on Sweet Pepper in Greenhouse in the Summer (여름작형 시설재배 파프리카의 주요 해충에 대한 생물적방제 기반 종합관리)

  • Choi, Man-Young;Kim, Jeong-Hwan;Kim, Hwang-Yong;Byeon, Young-Woong;Lee, Yong-Hwi
    • Korean journal of applied entomology
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    • v.48 no.4
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    • pp.503-508
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    • 2009
  • Biological-control-based-integrated-pest-management of major pests occurring on sweet pepper in greenhouse during summer season was tried. As many as 2.1 Orius laevigatus per $m^2$ were released in two times on June 6 and 19, and the population of thrips was kept under control and accordingly the damage was negligible throughout the season. To control aphids, a total of 0.8 Aphidius colemani per $m^2$ were released in four times, 0.2 of them at a time, flonicamid on May 14 and July 18 and pymetrozine on June 14 and September 4 were sprayed on the spots of high aphid occurrence to reduce the release of the wasp, and the density of aphids was kept under control. Whitefly was controlled successfully by releasing a total of 343.4 Amblyseius swirski per $m^2$ in nine times, 38.1 of them at a time, from May 9 until November 12 and dinotefuran was sprayed on November 12 when the density of whitefly increased up to 200 per trap. Tetranichus kanzawai was controlled by both Phytoseiulus persimilis which was released a total of 44.4 per $m^2$ in five times 8.9 of them at a time from May 23 to September 10, and the A. swirski which was released for the control of whitefly.

Studies on the Eco-friendly Management of Whiteflies on Organic Tomatoes with Oleic Acid (토마토 유기농 시설재배에서 올레산을 이용한 친환경적인 가루이류 방제 효과)

  • Lee, Mun-Haeng;Kim, Sung-Eun;Kim, Young-Shik;Lee, Hee-Keyng;Lee, Hwan-Gu;Jee, Hyung-Jin;Kim, Yong-Ki;Shim, Chang-Ki;Kim, Min-Jeong;Hong, Sung-Jun;Lee, Youn-Su
    • Korean Journal of Organic Agriculture
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    • v.21 no.1
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    • pp.95-104
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    • 2013
  • This research was performed to test the effects of oleic acid for the management of greenhouse whiteflies and tobacco whiteflies. Tobacco whiteflies, especially, are the vectors of tomato yellow leaf curl virus on tomato plants. Whiteflies are not only the vectors of various viruses but also the major insect pests that cause direct damages through sucking and induce sooty mold with their sweet dew on tomato plants. There are many eco-friendly management measures including the use of yellow sticky trap and natural enemies such as Eretmocerus eremicus and Amblyseius swirskii. However, these management measures have difficulties to implement in the greenhouse. Therefore, in this research, oleic acid was tested for its effect on the management of whiteflies at various concentrations of 1,000ppm, 2,000ppm, or 4,000ppm. As a result, treatments of 1,000ppm, 2,000ppm and 4,000ppm oleic acid showed the control value of 70%, 76% and 84%, respectively. In another test, treatments of 2,000ppm oleic acid, and control treatment of 1,5000ppm neem oil and 50ppm dinotefuran showed the control value of 82%, 75%, and 75%, respectively. Cost for one application of oleic acid and neem oil for 10a area would be 3,180 Won and 20,150 Won, respectively. As a result, it was assumed that the use of oleic acid would be a appropriate management measure.

Toxicology Study of Plant Extract made by Chrysanthemum Cinerariaefolium and Melia Azedarach against Natural Enemies and Plutella Xylostella on Chinese Cabbage (제충국, 멀구슬 추출물의 천적에 대한 독성 및 배추좀나방 방제 효과)

  • Kim, Do-Ik;Kim, Seon-Gon;Ko, Suk-Ju;Kang, Beom-Ryong;Choi, Duck-Soo;Kim, Sang-Soo;Hwang, In-Cheon
    • Korean Journal of Organic Agriculture
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    • v.18 no.4
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    • pp.559-571
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    • 2010
  • This study carried out to evaluate toxicology of Chrysanthemum cinerariaefolium and Melia azedarach against natural enemies in the laboratory, and the diamond backmoth, Plutella xylostella, on chinese cabbage. In the evaluation of the toxicity on predatory mite of phytoseiid Phytoseiulus persimilis, Hypoaspis aculeifer, Amblyseius cucumeris, A. wormersleyi, A. swirskii, the two plant extracts were classified into moderate selective toxicity as recommended by international organization of biocontrol (IOBC). The mummies parasitic natural enemies, Trichogramma evanescens, Aphidius ervi, Aphidius colemani, Eretmocerus eremicus, Encarsia formosa were found to be relatively safe to the plant extracts except Eretemocerus eremicus. In the field study for the control of diamondback moth, Plutella xylostella, single spray of C. cinerariefolium indicated that the control effect dropped from 21th days after the spraying. In the 3 times of spray with 7 says intervals, the mortality effect low at the beginning, but increased to 91.1 at 21 days after spraying. Single spray of M. azedarach showed a 96.7% mortality on P. xylostella at 14 days after spraying, and thereafter decreased. In the three times of spray with 7 days intervals of M. azedarach, the mortality of P. xylostella was 100% at 14 days and its effect was maintained to 28 days after treatment. Consequently, it was suggested that M. azedarach be sprayed before C. cinerariaefolium application.