Residual Activity of lmidacloprid Controlling Colorado Potato Beetle (Coleoptera: Chrysomelidae) and Three Species of Potato Colonizing Aphids (Homoptera: Aphidae)

Boiteau, Gilles; Osborn, W.P.L.; Drew, Margaret E.

doi:10.1093/jee/90.2.309

Cited by 23 publications

(11 citation statements)

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“…Foliar imidacloprid caused low mortality initially, followed by increasing levels of control. Similar trends in mortality were recorded when foliar imidacloprid was applied to 5 aphid species (Boiteau et al 1997). They initially recorded Ͻ35% mortality before increasing to 50 Ð75% over a 5-d period.…”

Section: Discussionsupporting

confidence: 68%

Laboratory and Field Evaluations of Imidacloprid AgainstMelanoplus sanguinipes(Orthoptera: Acrididae) on Small Grains

2000

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The toxicity of imidaloprid to the migratory grasshopper, Melanoplus sanguinipes (F.), was measured in bioassays, greenhouse trials, and field trials. An LD50 of 53 and 86 ppm for the oral/topical applications of imidacloprid confirmed a low toxicity for this chemical when compared with carbofuran as a standard. However, 100% debilitation was observed at concentrations of > or = 1 ppm. Grasshoppers exhibited leg flexing, abdominal quivering, and tremors before becoming motionless and appearing dead. Knockdown was temporary with a high percentage of recovery within 1 h. Efficacy and feeding damage were determined from artificial infestations of M. sanguinipes at the 2nd, 4th, and early tillering growth stages of winter and spring wheat treated with foliar and seed treatments of imidacloprid. All rates of imidacloprid tested resulted in < 45% mortality to 4th instar and adult M. sanguinipes in the greenhouse and field. Although efficacy was low, high rates of debilitation in bioassays suggest that improved control may be gained by combining imidacloprid with insect pathogens or additional chemicals.

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Section: Discussionsupporting

confidence: 68%

Laboratory and Field Evaluations of Imidacloprid AgainstMelanoplus sanguinipes(Orthoptera: Acrididae) on Small Grains

2000

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“…Imidacloprid was registered for use against CPB on potatoes in 1995 and soon became the primary means of controlling them in many potato‐growing areas in the USA 21. Initially, the incorporation of imidacloprid in the soil provided long control of overwintered adults and larvae of CPB,22 and foliar applications controlled summer generations when used at intervals of 7 days or more. In Long Island, high mortality was observed in the first year in borders around potato fields treated with imidacloprid, and no recovery of affected beetles was observed (Moyer DD, unpublished results).…”

Section: Introductionmentioning

confidence: 99%

Resistance and cross‐resistance to neonicotinoid insecticides and spinosad in the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae)

Mota-Sánchez

Hollingworth

Grafius

et al. 2005

Pest Management Science

232

182

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The Colorado potato beetle, Leptinotarsa decemlineata (Say), has developed resistance to many insecticides used for its control, recently including imidacloprid, a neonicotinoid compound. Other neonicotinoids are now being deployed to control this pest. A key point in the strategies of resistance management is the monitoring of resistance and cross-resistance. In the summer of 2003, imidacloprid-resistant adult Colorado potato beetles collected from Long Island, New York, USA were bioassayed using topical applications of imidacloprid and nine other neonicotinoids. Compared to a standard susceptible strain, the Long Island beetles showed 309-fold resistance to imidacloprid, and lower levels of cross-resistance to all other neonicotinoids, despite these never having been used in the field, i.e., 59-fold to dinotefuran, 33-fold to clothianidin, 29-fold to acetamiprid, 28-fold to N-methylimidacloprid, 25-fold to thiacloprid, 15-fold to thiamethoxam, 10-fold to nitenpyram, but less than 2-fold to nicotine. In injection bioassays, high resistance to imidacloprid was also found (116-fold). Piperonyl butoxide partially suppressed resistance to imidacloprid, but the resistance level was still over 100-fold, indicating that other mechanisms were primarily responsible for resistance. Low levels of resistance (8- to 10-fold) were found to the nicotinic activator, spinosad, in an imidacloprid-resistant strain collected from the same field in 2004. The cross-resistance seen with all the neonicotinoids tested suggests that the rotation of imidacloprid with other neonicotinoids may not be an effective long-term resistance management strategy. Rotation with spinosad also carries some risk, but it is unlikely that spinosad resistance in this case is mechanistically related to that for the neonicotinoids.

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“…Na cultura da batata, a utilização de imidacloprid, aplicado no solo, mostrou alta eficiência de controle nas espécies de pulgão Macrosiphum euphorbiae, M. persicae e Aphis nasturtii, por no mínimo 62-65 dias após a emergência. Contudo, a aplicação foliar do produto requereu no mínimo cinco dias de alimentação dessas espécies para uma porcentagem de controle de 50-75% (Boiteau et al, 1997). Nos percevejos-da-soja, Piezodorus guildinii, Nezara viridula e Euschistus heros, uma mistura de thiamethoxan, cipermetrina e sal de cozinha permitiu o controle dessas espécies por até 15 dias (Ramiro et al, 2005).…”

Section: Resultsunclassified

“…Nos percevejos-da-soja, Piezodorus guildinii, Nezara viridula e Euschistus heros, uma mistura de thiamethoxan, cipermetrina e sal de cozinha permitiu o controle dessas espécies por até 15 dias (Ramiro et al, 2005). A eficiência de controle dos inseticidas thiamethoxan e imidacloprid, de acordo com seu efeito residual, é variável em diferentes espécies-praga e com a dose do produto (Boiteau et al, 1997). Apenas plantas submetidas a cigarrinhas infectantes apresentaram sintomas de enfezamentos (Tabela 2).…”

Section: Resultsunclassified

“…Esses inseticidas diminuem seu efeito à medida que as plantas crescem. Tem sido demonstrado experimentalmente que o uso de inseticidas é capaz de controlar a população de insetos vetores por períodos relativamente longos, sem que, no entanto, haja redução significativa das doenças por eles disseminadas (Broadbent, 1957;Boiteau et al, 1997). A ação lenta dos inseticidas para levar à morte os insetos vetores, conforme relatado para imidacloprid, pode ser uma das causas da ineficiência na prevenção de disseminação de doenças em plantas (Boiteau et al, 1997).…”

Section: Resultsunclassified

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Controle químico da cigarrinha-do-milho e incidência dos enfezamentos causados por molicutes

Oliveira

Canuto

et al. 2007

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi verificar a eficiência do tratamento inseticida de sementes de milho no controle de Dalbulus maidis e na redução da incidência de enfezamentos em viveiro telado e em campo. Foram realizados dois experimentos; no experimento 1, em viveiro telado, sementes de milho foram tratadas com imidacloprid e thiamethoxan e, nessas plantas, cigarrinhas sadias, cigarrinhas infectantes com fitoplasma ou com espiroplasma foram confinadas. Avaliaram-se eficiência de controle, incidência de plantas com enfezamentos, altura das plantas e produção de grãos. No experimento 2, em campo, imidacloprid e thiamethoxan foram utilizados em tratamento de sementes e pulverizações aos 10 e 20 dias após a semeadura. A incidência de enfezamentos e a produção de grãos foram avaliadas. Em viveiro telado, os produtos imidacloprid e thiamethoxan proporcionaram controle de adultos de D. maidis acima de 50%, até o trigésimo dia, e reduziram a incidência de doenças e danos no crescimento e produção das plantas infectadas expostas às cigarrinhas infectantes aos dois dias após a emergência. Em campo, não foi constatada redução na incidência de enfezamentos ou ganho em produção, possivelmente devido ao fluxo migratório de cigarrinhas infectantes.Termos para indexação: Zea mays, Dalbulus maidis, Spiroplasma kunkelii, neonicotinóides, fitoplasma. Chemical control of corn leafhopper and incidence of corn stunting diseases caused by mollicutesAbstract -The objective of this work was to verify the efficiency of maize seed treatment on Dalbulus maidis control, and its effect on corn stunting diseases incidence, at screenhouse and at field. Two experiments were carried out. In the experiment 1 ( screenhouse), maize seeds were treated with imidacloprid or with thiamethoxan. Healthy leafhoppers, phytoplasma infective leafhoppers, and spiroplasma infective leafhoppers were confined in plants. Efficiency of control, incidence of plants with corn stunting diseases, plant height, and grain production were evaluated. In the experiment 2 (field) imidacloprid and thiamethoxan were used for seed treatment and sprayed at 10 and 20 days after sowing. Corn stunting diseases incidence and grain production were evaluated. At screenhouse, the use of imidacloprid and thiamethoxan controlled the adults of D. maidis up to 50%, until the 30 th day, and reduced disease incidence and damage on growth and grain production of the infected plants exposed to the infective leafhoppers, two days after emergency. In field, redution on corn stunting diseases or increasing production due to seed treatments was not observed possibly because of the migratory flux of infective leaf hoppers.Index terms: Zea mays, Dalbulus maidis, Spiroplasma kunkelii, neonicotinoids, phytoplasma. IntroduçãoNo manejo integrado de pragas (MIP), as decisões quanto às medidas de controle devem-se fundamentar em diversos fatores relacionadas à praga, à cultura e ao ambiente. Neste sentido, é importante determinar o nível do dano econômico (NDE), que possibilita a utilização dessa...

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Residual Activity of lmidacloprid Controlling Colorado Potato Beetle (Coleoptera: Chrysomelidae) and Three Species of Potato Colonizing Aphids (Homoptera: Aphidae)

Cited by 23 publications

References 0 publications

Laboratory and Field Evaluations of Imidacloprid AgainstMelanoplus sanguinipes(Orthoptera: Acrididae) on Small Grains

Laboratory and Field Evaluations of Imidacloprid AgainstMelanoplus sanguinipes(Orthoptera: Acrididae) on Small Grains

Resistance and cross‐resistance to neonicotinoid insecticides and spinosad in the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae)

Controle químico da cigarrinha-do-milho e incidência dos enfezamentos causados por molicutes

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