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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
04/10/2022 |
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Data da última atualização: |
04/10/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RIBEIRO, L. P.; DEDONATTI, E.; BALZAN, F.; NESI, C. N. |
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Título: |
Management of southern corn rootworm and leafhoppers by treating seeds: field assessments in maize second crop in southern Brazil. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
In: ENCONTRO SUL-BRASILEIRO DE FITOSSANIDADE, 1., 2022, Chapecó, SC. Anais... Florianópolis: Epagri, 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
Maize productivity is highly affected by Diabrotica speciosa and Dalbulus maidis in the second crop seasons in southern Brazil. Thus, this study evaluated the effects of different systemic insecticides tested at recommended doses by seed treatment on the management of these two pest species and assessed the influence of these treatments on maize yield. We conducted a 2-year field experiments (2015/2016 and 2016/2017) at two locations (Chapecó and Guatambú) in Santa Catarina State, Brazil. The experiments were conducted under natural infestation of both pest species, with eight treatments [(imidacloprid, thiamethoxam, imidacloprid+thiodicarb, fipronil, imidacloprid+bifenthrin, chlorantraniliprole, chlorantraniliprole+clothidian (standard used in industrial seed treatment), and a negative control (without insecticides)]. The results showed that seed treatment do not reduce population density of D. maidis after 21 days of plant emergence and injuries in the maize root system caused by D. speciosa larvae. In addition, insecticides via seed treatment do not affect productivity and crop yield components. Regardless of the location and year, root damage was positively correlated with diameter of the first internode and inversely correlated with grain yield. In this framework, this research suggests that maize seed treatments not always provide economic benefits to farmers, such as pest reductions or yield improvements. |
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Thesagro: |
Dalbulus maidis; Diabrotica speciosa; neonicotinoids; pyrazoles; Zea mays. |
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Categoria do assunto: |
O Insetos e Entomologia |
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Marc: |
LEADER 02158naa a2200217 a 4500
001 1132483
005 2022-10-04
008 2022 bl uuuu u00u1 u #d
100 1 $aRIBEIRO, L. P.
245 $aManagement of southern corn rootworm and leafhoppers by treating seeds$bfield assessments in maize second crop in southern Brazil.$h[electronic resource]
260 $c2022
520 $aMaize productivity is highly affected by Diabrotica speciosa and Dalbulus maidis in the second crop seasons in southern Brazil. Thus, this study evaluated the effects of different systemic insecticides tested at recommended doses by seed treatment on the management of these two pest species and assessed the influence of these treatments on maize yield. We conducted a 2-year field experiments (2015/2016 and 2016/2017) at two locations (Chapecó and Guatambú) in Santa Catarina State, Brazil. The experiments were conducted under natural infestation of both pest species, with eight treatments [(imidacloprid, thiamethoxam, imidacloprid+thiodicarb, fipronil, imidacloprid+bifenthrin, chlorantraniliprole, chlorantraniliprole+clothidian (standard used in industrial seed treatment), and a negative control (without insecticides)]. The results showed that seed treatment do not reduce population density of D. maidis after 21 days of plant emergence and injuries in the maize root system caused by D. speciosa larvae. In addition, insecticides via seed treatment do not affect productivity and crop yield components. Regardless of the location and year, root damage was positively correlated with diameter of the first internode and inversely correlated with grain yield. In this framework, this research suggests that maize seed treatments not always provide economic benefits to farmers, such as pest reductions or yield improvements.
650 $aDalbulus maidis
650 $aDiabrotica speciosa
650 $aneonicotinoids
650 $apyrazoles
650 $aZea mays
700 1 $aDEDONATTI, E.
700 1 $aBALZAN, F.
700 1 $aNESI, C. N.
773 $tIn: ENCONTRO SUL-BRASILEIRO DE FITOSSANIDADE, 1., 2022, Chapecó, SC. Anais... Florianópolis: Epagri, 2022.
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