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Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
23/08/2007 |
Data da última atualização: |
27/02/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Nacional - A |
Autoria: |
SILVA, A. de A. e.; VARANDA. E. M.; RASSINI, J. B. |
Afiliação: |
ALEXANDRE DE A. E SILVA, IPEPATRO; ELENICE MOURO VARANDA, FFCLRP; JOAQUIM BARTOLOMEU RASSINI, CPPSE. |
Título: |
Weather, cultivar and density-dependent processes influence on aphid in alfafa. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
Bragantia, Campinas, v. 66, n. 2, p. 255-262, 2007. |
DOI: |
10.1590/S0006-87052007000200012 |
Idioma: |
Inglês |
Conteúdo: |
It is important to understand the effects of weather, insect density and plant cultivar on insect abundance to predict and prevent crop production loss. The present work investigated the influence of such factors on aphid in alfalfa during one year (short term). Data was collected from September/1997 to August/1998 at Canchin Farm (CCPSE-EMBRAPA), São Carlos, State of São Paulo, Brazil. Weather conditions had, in general, little effect on the variation of aphid populations, but Therioaphis maculata abundance was negatively correlated to humidity. Moreover, high maximum temperatures and low levels of rainfall possible favored T. maculata high abundance on Crioula and P3 cultivars. Therefore, appropriate management of this species is required during hot and dry periods. Population variation of Acyrthosiphon spp., T. maculata and Aphis craccivora seems to be regulated by density dependent processes. Resistant cultivar CUF 101 had a lower abundance of T. maculata and A. craccivora and a narrower population variation than the other cultivars and may reduce their abundance on field. Long-term studies on population dynamics including the effect of climatic conditions and density-dependent factors on plant quality will contribute to pest management in alfalfa fields. |
Palavras-Chave: |
Herbivory; Resistance. |
Thesagro: |
Dinâmica Populacional; Hemíptera; Medicago Sativa; Resistência. |
Thesaurus NAL: |
Population dynamics. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/40018/1/PROCIJBR2007.00135.pdf
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Marc: |
LEADER 01994naa a2200241 a 4500 001 1047960 005 2023-02-27 008 2007 bl uuuu u00u1 u #d 024 7 $a10.1590/S0006-87052007000200012$2DOI 100 1 $aSILVA, A. de A. e. 245 $aWeather, cultivar and density-dependent processes influence on aphid in alfafa.$h[electronic resource] 260 $c2007 520 $aIt is important to understand the effects of weather, insect density and plant cultivar on insect abundance to predict and prevent crop production loss. The present work investigated the influence of such factors on aphid in alfalfa during one year (short term). Data was collected from September/1997 to August/1998 at Canchin Farm (CCPSE-EMBRAPA), São Carlos, State of São Paulo, Brazil. Weather conditions had, in general, little effect on the variation of aphid populations, but Therioaphis maculata abundance was negatively correlated to humidity. Moreover, high maximum temperatures and low levels of rainfall possible favored T. maculata high abundance on Crioula and P3 cultivars. Therefore, appropriate management of this species is required during hot and dry periods. Population variation of Acyrthosiphon spp., T. maculata and Aphis craccivora seems to be regulated by density dependent processes. Resistant cultivar CUF 101 had a lower abundance of T. maculata and A. craccivora and a narrower population variation than the other cultivars and may reduce their abundance on field. Long-term studies on population dynamics including the effect of climatic conditions and density-dependent factors on plant quality will contribute to pest management in alfalfa fields. 650 $aPopulation dynamics 650 $aDinâmica Populacional 650 $aHemíptera 650 $aMedicago Sativa 650 $aResistência 653 $aHerbivory 653 $aResistance 700 1 $aVARANDA. E. M. 700 1 $aRASSINI, J. B. 773 $tBragantia, Campinas$gv. 66, n. 2, p. 255-262, 2007.
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Embrapa Pecuária Sudeste (CPPSE) |
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