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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
05/05/1994 |
Data da última atualização: |
30/03/2023 |
Autoria: |
VELHO, L. M. L. S. |
Afiliação: |
UNICAMP-IG, Campinas, SP. |
Título: |
Como medir a ciência? |
Ano de publicação: |
1985 |
Fonte/Imprenta: |
Revista Brasileira de Tecnologia, Brasilia, v.16, n.1, p.35-41, jan./fev. 1985. |
Idioma: |
Português |
Palavras-Chave: |
Ciencia; Desempenho cientifico; Indicador; Medida; Periferia; Producao cientifica; Publicacao. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00513naa a2200193 a 4500 001 1011849 005 2023-03-30 008 1985 bl --- 0-- u #d 100 1 $aVELHO, L. M. L. S. 245 $aComo medir a ciência? 260 $c1985 653 $aCiencia 653 $aDesempenho cientifico 653 $aIndicador 653 $aMedida 653 $aPeriferia 653 $aProducao cientifica 653 $aPublicacao 773 $tRevista Brasileira de Tecnologia, Brasilia$gv.16, n.1, p.35-41, jan./fev. 1985.
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Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
Data corrente: |
08/02/2012 |
Data da última atualização: |
08/02/2012 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
TEODORO, A. V.; REGO, A. S.; SILVA, A. C. B. da. |
Afiliação: |
ADENIR VIEIRA TEODORO, CPATC; ADRIANO SOARES REGO, UEMA; AMANDA CAROLINA BORGES DA SILVA, UEMA. |
Título: |
Relative contribution of environmental factors to the population dynamics of the dassava Green Mite. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
In: TROPENTAG 2011: CONFERENCE ON INTERNATIONAL RESEARCH ON FOOD SECURITY, NATURAL RESOURCE MANAGEMENT AND RURAL DEVELOPMENT, Bonn, 2011. Development on the margin: book of abstracts. Bonn: University of Bonn, 2011. |
Idioma: |
Português |
Conteúdo: |
The producing landscape of Northeast Brazil is dominated by smallholder agriculture. Slash and burn management practices are still used by local farmers to cultivate staple crops such as cassava (Manihot esculenta), which is attacked by a variety of pests, including the cassava green mite Mononychellus tanajoa (Acari: Tetranychidae). This pest is responsible for high yield losses in Brazil and may be kept in check by naturally occurring predatory mites of family Phytoseiidae. In addition to predatory mites, environmental factors may also contribute to regulate pest populations in the field. We evaluated the population dynamics of M. tanajoa and the most abundant predatory mite found in the study region, the generalist phytoseiid Euseius ho (Acari: Phytoseiidae), over the cultivation cycle (11 months) of cassava in four farms. In each farm, 10 cassava plants were randomly selected and 6 leaves taken monthly, totaling 60 leaves per farm per month. The number of mites per leaf was recorded and subsequently converted into number of mites per cm2. Moreover, we determined the relative contribution of biotic (abundance of E. ho) and abiotic (rainfall, temperature and relative humidity) environmental factors to the abundance of M. tanajoa. The abundance of M. tanajoa was high and increased whereas the abundance of E. ho was low and remained constant throughout the cultivation cycle of cassava. Hierarchical partitioning analyses revealed that most of the variance for the abundance of M. tanajoa was explained by rainfall and relative humidity followed by E. ho abundance and temperature. In conclusion, although the generalist predatory mite E. ho contributed to regulate populations of the cassava green mite the main mechanisms explaining the abundance of M. tanajoa were abiotic environmental factors. MenosThe producing landscape of Northeast Brazil is dominated by smallholder agriculture. Slash and burn management practices are still used by local farmers to cultivate staple crops such as cassava (Manihot esculenta), which is attacked by a variety of pests, including the cassava green mite Mononychellus tanajoa (Acari: Tetranychidae). This pest is responsible for high yield losses in Brazil and may be kept in check by naturally occurring predatory mites of family Phytoseiidae. In addition to predatory mites, environmental factors may also contribute to regulate pest populations in the field. We evaluated the population dynamics of M. tanajoa and the most abundant predatory mite found in the study region, the generalist phytoseiid Euseius ho (Acari: Phytoseiidae), over the cultivation cycle (11 months) of cassava in four farms. In each farm, 10 cassava plants were randomly selected and 6 leaves taken monthly, totaling 60 leaves per farm per month. The number of mites per leaf was recorded and subsequently converted into number of mites per cm2. Moreover, we determined the relative contribution of biotic (abundance of E. ho) and abiotic (rainfall, temperature and relative humidity) environmental factors to the abundance of M. tanajoa. The abundance of M. tanajoa was high and increased whereas the abundance of E. ho was low and remained constant throughout the cultivation cycle of cassava. Hierarchical partitioning analyses revealed that most of the variance for the abundance of... Mostrar Tudo |
Thesagro: |
Controle Biológico. |
Thesaurus NAL: |
biological control. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02495nam a2200157 a 4500 001 1914639 005 2012-02-08 008 2011 bl uuuu u00u1 u #d 100 1 $aTEODORO, A. V. 245 $aRelative contribution of environmental factors to the population dynamics of the dassava Green Mite.$h[electronic resource] 260 $aIn: TROPENTAG 2011: CONFERENCE ON INTERNATIONAL RESEARCH ON FOOD SECURITY, NATURAL RESOURCE MANAGEMENT AND RURAL DEVELOPMENT, Bonn, 2011. Development on the margin: book of abstracts. Bonn: University of Bonn$c2011 520 $aThe producing landscape of Northeast Brazil is dominated by smallholder agriculture. Slash and burn management practices are still used by local farmers to cultivate staple crops such as cassava (Manihot esculenta), which is attacked by a variety of pests, including the cassava green mite Mononychellus tanajoa (Acari: Tetranychidae). This pest is responsible for high yield losses in Brazil and may be kept in check by naturally occurring predatory mites of family Phytoseiidae. In addition to predatory mites, environmental factors may also contribute to regulate pest populations in the field. We evaluated the population dynamics of M. tanajoa and the most abundant predatory mite found in the study region, the generalist phytoseiid Euseius ho (Acari: Phytoseiidae), over the cultivation cycle (11 months) of cassava in four farms. In each farm, 10 cassava plants were randomly selected and 6 leaves taken monthly, totaling 60 leaves per farm per month. The number of mites per leaf was recorded and subsequently converted into number of mites per cm2. Moreover, we determined the relative contribution of biotic (abundance of E. ho) and abiotic (rainfall, temperature and relative humidity) environmental factors to the abundance of M. tanajoa. The abundance of M. tanajoa was high and increased whereas the abundance of E. ho was low and remained constant throughout the cultivation cycle of cassava. Hierarchical partitioning analyses revealed that most of the variance for the abundance of M. tanajoa was explained by rainfall and relative humidity followed by E. ho abundance and temperature. In conclusion, although the generalist predatory mite E. ho contributed to regulate populations of the cassava green mite the main mechanisms explaining the abundance of M. tanajoa were abiotic environmental factors. 650 $abiological control 650 $aControle Biológico 700 1 $aREGO, A. S. 700 1 $aSILVA, A. C. B. da
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