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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
23/07/2012 |
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Data da última atualização: |
23/07/2012 |
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Autoria: |
PAULA-MORAES, S. V. de. |
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Afiliação: |
SILVANA VIEIRA DE PAULA MORAES, CPAC. |
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Título: |
Ecology and integrated pest management of western bean cutworm Striacosta albicosta (Smith) (Lepidoptera: Noctuidae) in field crop. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
2012 |
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Páginas: |
127 f. |
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Idioma: |
Inglês |
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Notas: |
Tese (Doctor of Philosophy) - Faculty of The Graduate College, University of Nebraska. Orientador: Thomas E. Hunt; Robert J Wright. |
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Conteúdo: |
Western bean cutworm, Striacosta albicosta (Smith) (Lepidoptera: Noctuidae), is a native pest of dry beans (Phaseolus vulgaris L.) and corn (Zea mays L.), and historically distributed in the western United States. The insect's recent expansion eastward is documented since 1999. The species is univoltine, the adults typically emerge in the middle of July, lay eggs on corn leaves, and the larvae feed on different corn tissues. In the fourth instar, larvae start colonization of the ear where they feed on kernels. There is a narrow window for management and early detection of the pest in the field is essential. Larval feeding and dispersal of early larval instar studies of western bean cutworm are necessary to immprove the understanding about how feeding requirements affect larval survival and establishment on the corn plant. A refinement of economic injury levels (EIL) and economic thresholds (ET) are also required for management decision-making. Studies during 2008-2011, across three ecoregions of Nebraska, had the following objectives: (1) developing a binomial sequential sampling plans for egg masses, (2) determine the feeding behavior and dispersal of the early instars on corn, and (3) development of EILs and the ETs that incorporate the dynamics of corn price, management cost, and pest survival. The results from the present study demonstrated that the binomial sequential sampling plans developed significantly reduce the effort required for effective management of this pest, reducing sampling effort from 100 plants sampled to an average of 38 to 41 plants sampled per field. The results indicate low larval survival of this species and that the early instars of western bean cutworm are the critical stage for establishment in corn. A behavior of initial larval movement toward the tassel was observed. The overall mean yield loss one western bean cutworm larva per plant was 945.52 kg/ha (15.08 bu/acre), based on 74,100 plants/ha. The ETs are expressed in percentage of plants with at least one egg mass, incorporate larval survival that was observed across three locations in Nebraska. MenosWestern bean cutworm, Striacosta albicosta (Smith) (Lepidoptera: Noctuidae), is a native pest of dry beans (Phaseolus vulgaris L.) and corn (Zea mays L.), and historically distributed in the western United States. The insect's recent expansion eastward is documented since 1999. The species is univoltine, the adults typically emerge in the middle of July, lay eggs on corn leaves, and the larvae feed on different corn tissues. In the fourth instar, larvae start colonization of the ear where they feed on kernels. There is a narrow window for management and early detection of the pest in the field is essential. Larval feeding and dispersal of early larval instar studies of western bean cutworm are necessary to immprove the understanding about how feeding requirements affect larval survival and establishment on the corn plant. A refinement of economic injury levels (EIL) and economic thresholds (ET) are also required for management decision-making. Studies during 2008-2011, across three ecoregions of Nebraska, had the following objectives: (1) developing a binomial sequential sampling plans for egg masses, (2) determine the feeding behavior and dispersal of the early instars on corn, and (3) development of EILs and the ETs that incorporate the dynamics of corn price, management cost, and pest survival. The results from the present study demonstrated that the binomial sequential sampling plans developed significantly reduce the effort required for effective management of this pest... Mostrar Tudo |
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Palavras-Chave: |
Striacosta albicosta. |
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Thesagro: |
Agricultura; Entomologia; Praga. |
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Thesaurus Nal: |
Lepidoptera. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02782nam a2200193 a 4500
001 1928871
005 2012-07-23
008 2012 bl uuuu m 00u1 u #d
100 1 $aPAULA-MORAES, S. V. de
245 $aEcology and integrated pest management of western bean cutworm Striacosta albicosta (Smith) (Lepidoptera$bNoctuidae) in field crop.
260 $a2012$c2012
300 $a127 f.
500 $aTese (Doctor of Philosophy) - Faculty of The Graduate College, University of Nebraska. Orientador: Thomas E. Hunt; Robert J Wright.
520 $aWestern bean cutworm, Striacosta albicosta (Smith) (Lepidoptera: Noctuidae), is a native pest of dry beans (Phaseolus vulgaris L.) and corn (Zea mays L.), and historically distributed in the western United States. The insect's recent expansion eastward is documented since 1999. The species is univoltine, the adults typically emerge in the middle of July, lay eggs on corn leaves, and the larvae feed on different corn tissues. In the fourth instar, larvae start colonization of the ear where they feed on kernels. There is a narrow window for management and early detection of the pest in the field is essential. Larval feeding and dispersal of early larval instar studies of western bean cutworm are necessary to immprove the understanding about how feeding requirements affect larval survival and establishment on the corn plant. A refinement of economic injury levels (EIL) and economic thresholds (ET) are also required for management decision-making. Studies during 2008-2011, across three ecoregions of Nebraska, had the following objectives: (1) developing a binomial sequential sampling plans for egg masses, (2) determine the feeding behavior and dispersal of the early instars on corn, and (3) development of EILs and the ETs that incorporate the dynamics of corn price, management cost, and pest survival. The results from the present study demonstrated that the binomial sequential sampling plans developed significantly reduce the effort required for effective management of this pest, reducing sampling effort from 100 plants sampled to an average of 38 to 41 plants sampled per field. The results indicate low larval survival of this species and that the early instars of western bean cutworm are the critical stage for establishment in corn. A behavior of initial larval movement toward the tassel was observed. The overall mean yield loss one western bean cutworm larva per plant was 945.52 kg/ha (15.08 bu/acre), based on 74,100 plants/ha. The ETs are expressed in percentage of plants with at least one egg mass, incorporate larval survival that was observed across three locations in Nebraska.
650 $aLepidoptera
650 $aAgricultura
650 $aEntomologia
650 $aPraga
653 $aStriacosta albicosta
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 425 | |
| 21. |  | MORAES, S. da S. Importância da suplementação mineral para bovinos de corte. In: CURSO DE MANEJO SANITÁRIO, REPRODUTIVO E NUTRICIONAL EM BOVINOS, Programa Repasto - Seprotur, turma 6 - 2. etapa, 2003, Dourados, MS. Palestras apresentadas. Campo Grande, MS: Embrapa Gado de Corte, 2003. Data de realização: 15 e 16 de setembro de 2003. p. 45-56| Biblioteca(s): Embrapa Gado de Corte. |
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| 22. | | MORAES, S. da S. Importância da suplementação mineral. In: CURSO DE MANEJO NUTRICIONAL EM BOVINOS DE CORTE, 2004, Campo Grande. Adoção de boas práticas na produção animal. Campo Grande: Embrapa Gado de Corte, 2004. p. 18-29. CNPGC.| Biblioteca(s): Embrapa Gado de Corte. |
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| 38. | | OLIVEIRA, M. R. V. de; PAULA-MORAES, S. V. Lepidópteras quarentenárias: importância para o Brasil. In: OLIVEIRA, M. R. V. de; PAULA MORAES, S. V. de (Ed.). Lepidópteras quarentenárias para o Brasil: subsídios para identificação e análise de risco de pragas. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia; Planaltina, DF: Embrapa Cerrados, 2007. 295 p. p. 10-16.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 425 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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