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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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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
25/08/1997 |
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Data da última atualização: |
04/09/2015 |
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Autoria: |
DIAZ ACUNA, R. L.; MANTOVANI, E. C.; BERTAUX, S.; MARTYN, P. J.; QUEIROZ, D. M. de. |
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Afiliação: |
EVANDRO CHARTUNI MANTOVANI, CNPMS. |
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Título: |
Avaliação de desempenho de um trator agrícola por análise dimensional e por ensaios de campo num Latossolo Vermelho-Escuro. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
In: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1988-1991. Sete Lagoas, 1992. p. 199. |
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Idioma: |
Português |
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Palavras-Chave: |
Agricultural mechanization; Compactacao; Compactation. |
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Thesagro: |
Mecanização Agrícola; Solo. |
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Thesaurus NAL: |
soil. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/80122/1/Avaliacao-desempenho.pdf
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Marc: |
LEADER 00841naa a2200229 a 4500
001 1475874
005 2015-09-04
008 1992 bl uuuu u00u1 u #d
100 1 $aDIAZ ACUNA, R. L.
245 $aAvaliação de desempenho de um trator agrícola por análise dimensional e por ensaios de campo num Latossolo Vermelho-Escuro.$h[electronic resource]
260 $c1992
650 $asoil
650 $aMecanização Agrícola
650 $aSolo
653 $aAgricultural mechanization
653 $aCompactacao
653 $aCompactation
700 1 $aMANTOVANI, E. C.
700 1 $aBERTAUX, S.
700 1 $aMARTYN, P. J.
700 1 $aQUEIROZ, D. M. de
773 $tIn: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1988-1991. Sete Lagoas, 1992. p. 199.
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Embrapa Milho e Sorgo (CNPMS) |
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