Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/21449
Tipo: Artigo
Título: Economic damage levels and treatment thresholds for leafminer insects in Solanum tuberosum crops
Autor(es): Alves, Flávia Maria
Gonring, Alfredo Henrique Rocha
Zanuncio, José Cola
Fernandes, Maria Elisa de Sena
Plata-Rueda, Angelica
Fernandes, Flávio Lemes
Abstract: Integrated Pest Management (IPM) can only result in reduced insecticide use when treatments are applied when infestations reach economic thresholds (ET) determined from economic injury levels (EIL). The objective of this study was to determine the EIL and ET for Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae) and Liriomyza huidobrensis (Burgess) (Diptera: Agromyzidae) in 8 and 11 fields of the potato cultivar 'Ágata', respectively. The EILs were calculated based on control costs, production values, control efficacy and injuries of each insect and the ETs were calculated by subtracting 20% from the EIL value, given that control measures must be undertaken before the pest populations reach the former level. The EIL for L. huidobrensis at 50 and 70 days after planting (DAP) ranged from 0.07 to 0.24 and from 0.09 to 0.32 mines per plant, respectively, and those of P. operculella at 50 DAP ranged from 0.07 to 0.24 mines per plant. The ET for L. huidobrensis at 50 and 70 DAP were 0.05–0.19 mines per plant, respectively, and those of P. operculella, 0.05 to 0.19 mines per plant at 50 DAP. These results suggest that management of these pests in potato crops should use the ET of 0.07 and 0.05 mines per plant for control decisions regarding L. huidobrensis and P. operculella, respectively.
Palavras-chave: Conventional pest control
Integrated pest management
Leaf-mining fly (Diptera)
Potato
Potato tuber moth
Editor: Crop Protection
Tipo de Acesso: Elsevier Ltd.
URI: https://doi.org/10.1016/j.cropro.2017.06.008
http://www.locus.ufv.br/handle/123456789/21449
Data do documento: Out-2017
Aparece nas coleções:Fitotecnia - Artigos

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