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Economic injury levels and economic thresholds for Leptoglossus zonatus (Dallas) (Hemiptera: Coreidae) infesting seed maize.
Foresti, Josemar; Bastos, Cristina S; Fernandes, Flávio L; Silva, Paulo R da.
Afiliação
  • Foresti J; DuPont do Brasil S.A. Divisão Pioneer Sementes, Unidade de Pesquisa e Beneficiamento de Brasília, Planaltina, DF, Brazil.
  • Bastos CS; Universidade de Brasília (UnB), Faculdade de Agronomia e Medicina Veterinária (FAV), Campus Darcy Ribeiro, Brasília, DF, Brazil.
  • Fernandes FL; Universidade Federal de Viçosa (UFV), Instituto de Ciências Agrárias, Campus Rio Paranaíba, Rio Paranaíba, MG, Brazil.
  • Silva PRD; DuPont do Brasil S.A. Divisão Pioneer Sementes, Unidade de Pesquisa e Beneficiamento de Brasília, Planaltina, DF, Brazil.
Pest Manag Sci ; 74(1): 149-158, 2018 Jan.
Article em En | MEDLINE | ID: mdl-28731614
BACKGROUND: Although Leptoglossus zonatus is considered a secondary pest of maize grown for grain, when grown for seed, this pest can cause significant economic damage. There are no records of management recommendations for this pest. The objectives of this work were to quantify losses caused by L. zonatus to different genotypes used for seed maize production and to estimate the acute toxicity of selected insecticides to L. zonatus using different application technologies. The ultimate goal was to calculate economic injury levels (EILs) and develop economic thresholds (ETs) for L. zonatus infesting seed maize. RESULTS: EILs and ETs varied, respectively, from 3 to 8 and from 2 to 6 adults per 1000 plants, depending on the genotype, insecticide and application technology. Effective control was obtained by using aerial or ground application of λ-cyhalothrin (10.6%) + thiametoxan (14.1%) or permethrin (38.4%) at the rates of 1.48 mL ha-1 and 27.10 mL ha-1 , respectively, or ground application of methomyl (21.5%) at the rate of 244.06 mL ha-1 . CONCLUSION: Maize grown for seed is susceptible to L. zonatus damage during reproductive stages, and the pest densities requiring management vary with genotype, insecticide, and application technology. These results contribute significantly to integrated pest management (IPM) for seed maize. © 2017 Society of Chemical Industry.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Controle de Insetos / Zea mays / Heterópteros / Inseticidas Tipo de estudo: Health_economic_evaluation Limite: Animals Idioma: En Revista: Pest Manag Sci Assunto da revista: TOXICOLOGIA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
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Imprimir
XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Controle de Insetos / Zea mays / Heterópteros / Inseticidas Tipo de estudo: Health_economic_evaluation Limite: Animals Idioma: En Revista: Pest Manag Sci Assunto da revista: TOXICOLOGIA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido