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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agricultura Digital. Para informações adicionais entre em contato com cnptia.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
16/02/2009 |
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Data da última atualização: |
15/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIGHI, E. Z.; ANGELOCCI, L. R.; MARIN, F. R. |
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Afiliação: |
EVANDRO ZANINI RIGHI, PUC-PR; LUIZ ROBERTO ANGELOCCI, Esalq/USP; FABIO RICARDO MARIN, CNPTIA. |
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Título: |
Energy balance of a young drip-irrigated coffee crop in southeast Brazil: an analysis of errors and reliability of measurements by the Bowen ratio method. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Revista Brasileira de Agrometeorologia, Piracicaba, v. 15, n. 3, p. 267-279, 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
The energy balance of a young (one to two year-old), drip irrigated coffee crop in hedgerows configuration was determined using the energy balance-Bowen ratio (EBBR) method, during two periods in the wet season [October?Dezember/2002 (P1) and February?March/2003 (P2)] and two in the dry season [May?July/2003 (P3) and August?September/2003 (P4)], in Piracicaba, São Paulo State, Brazil. An analysis of errors affecting the estimates of latent and sensible heat fluxes was performed. Emphasis was given on determining the reliability of the assumption that Kh=Kw in the EBBR method, in view of the possibility of occurrence of sensible heat advection (regional and or within-row) and on the effect of errors of measurements of the air temperature and vapor pressure through the use of thermocouple psychrometers. The psychrometric errors had a more prevalent effect in the dry periods when the humidity gradients were lower than during the humid periods, leading to a larger discarding of measurement during P3 and P4. In the wet periods, it was deduced that the assumption of Kh=Kw did not introduce a large effect on the estimates of the heat fluxes, but during the dry periods this similarity could not be assumed as a function of advective fluxes. The soil surface water conditions were the main factor that determined the energy partitioning. The latent heat flux represented more than 80% of the available energy (Rn?G) in the wet season, decreasing to 78% in P3 and 64% in P4, the dry periods. However, values obtained during P4 were affected by problems on management of the coffee crop. Weeds growing in the inter-rows affected the energy partitioning mostly during periods with low rainfall. The effect of coffee growth and the weeds on the latent heat flux was masked by the soil humidity inside each studied period. In the early dry period, the effect of inter-row weeds on the latent heat flux was important, because they could have extracted water from deep depths in the soil. MenosThe energy balance of a young (one to two year-old), drip irrigated coffee crop in hedgerows configuration was determined using the energy balance-Bowen ratio (EBBR) method, during two periods in the wet season [October?Dezember/2002 (P1) and February?March/2003 (P2)] and two in the dry season [May?July/2003 (P3) and August?September/2003 (P4)], in Piracicaba, São Paulo State, Brazil. An analysis of errors affecting the estimates of latent and sensible heat fluxes was performed. Emphasis was given on determining the reliability of the assumption that Kh=Kw in the EBBR method, in view of the possibility of occurrence of sensible heat advection (regional and or within-row) and on the effect of errors of measurements of the air temperature and vapor pressure through the use of thermocouple psychrometers. The psychrometric errors had a more prevalent effect in the dry periods when the humidity gradients were lower than during the humid periods, leading to a larger discarding of measurement during P3 and P4. In the wet periods, it was deduced that the assumption of Kh=Kw did not introduce a large effect on the estimates of the heat fluxes, but during the dry periods this similarity could not be assumed as a function of advective fluxes. The soil surface water conditions were the main factor that determined the energy partitioning. The latent heat flux represented more than 80% of the available energy (Rn?G) in the wet season, decreasing to 78% in P3 and 64% in P4, the dry periods... Mostrar Tudo |
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Palavras-Chave: |
Advecção; Calor sensível; Erros de medidas; Fluxo de energia latente; Psicrometria; Psychrometry. |
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Thesagro: |
Balanço de energia; Café; Clima; Irrigação. |
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Thesaurus Nal: |
advection. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02861naa a2200277 a 4500
001 1024586
005 2020-01-15
008 2007 bl uuuu u00u1 u #d
100 1 $aRIGHI, E. Z.
245 $aEnergy balance of a young drip-irrigated coffee crop in southeast Brazil$ban analysis of errors and reliability of measurements by the Bowen ratio method.$h[electronic resource]
260 $c2007
520 $aThe energy balance of a young (one to two year-old), drip irrigated coffee crop in hedgerows configuration was determined using the energy balance-Bowen ratio (EBBR) method, during two periods in the wet season [October?Dezember/2002 (P1) and February?March/2003 (P2)] and two in the dry season [May?July/2003 (P3) and August?September/2003 (P4)], in Piracicaba, São Paulo State, Brazil. An analysis of errors affecting the estimates of latent and sensible heat fluxes was performed. Emphasis was given on determining the reliability of the assumption that Kh=Kw in the EBBR method, in view of the possibility of occurrence of sensible heat advection (regional and or within-row) and on the effect of errors of measurements of the air temperature and vapor pressure through the use of thermocouple psychrometers. The psychrometric errors had a more prevalent effect in the dry periods when the humidity gradients were lower than during the humid periods, leading to a larger discarding of measurement during P3 and P4. In the wet periods, it was deduced that the assumption of Kh=Kw did not introduce a large effect on the estimates of the heat fluxes, but during the dry periods this similarity could not be assumed as a function of advective fluxes. The soil surface water conditions were the main factor that determined the energy partitioning. The latent heat flux represented more than 80% of the available energy (Rn?G) in the wet season, decreasing to 78% in P3 and 64% in P4, the dry periods. However, values obtained during P4 were affected by problems on management of the coffee crop. Weeds growing in the inter-rows affected the energy partitioning mostly during periods with low rainfall. The effect of coffee growth and the weeds on the latent heat flux was masked by the soil humidity inside each studied period. In the early dry period, the effect of inter-row weeds on the latent heat flux was important, because they could have extracted water from deep depths in the soil.
650 $aadvection
650 $aBalanço de energia
650 $aCafé
650 $aClima
650 $aIrrigação
653 $aAdvecção
653 $aCalor sensível
653 $aErros de medidas
653 $aFluxo de energia latente
653 $aPsicrometria
653 $aPsychrometry
700 1 $aANGELOCCI, L. R.
700 1 $aMARIN, F. R.
773 $tRevista Brasileira de Agrometeorologia, Piracicaba$gv. 15, n. 3, p. 267-279, 2007.
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Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
06/03/2014 |
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Data da última atualização: |
05/07/2017 |
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Autoria: |
FIGUEIREDO, C. S.; MARUCCI, S. C.; TEZZA, R. I. D.; LEMOS, M. V. F.; DESIDÉRIO, J. A. |
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Afiliação: |
Camila Soares Figueiredo, Universidade Estadual Paulista Júlio de Mesquita Filho; Suzana Cristina Marucci, Universidade Estadual Paulista Júlio de Mesquita Filho; Renata Izabel Dozzi Tezza, Universidade Estadual Paulista Júlio de Mesquita Filho; Manoel Victor Franco Lemos, Universidade Estadual Paulista Júlio de Mesquita Filho; Janete Apparecida Desidério, Universidade Estadual Paulista Júlio de Mesquita Filho. |
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Título: |
Caracterização do gene vip3A e toxidade da proteína Vip3Aa50 à lagarta-do-cartucho e à lagarta-da-soja. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 48, n. 9, p. 1220-1227, set. 2013. |
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Idioma: |
Português |
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Notas: |
Título em inglês: Characterization of the vip3A gene and toxicity of Vip3Aa50 protein to fall armyworm and velvetbean caterpillar. |
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Conteúdo: |
O objetivo deste trabalho foi caracterizar o gene vip3A de Bacillus thuringiensis e verificar a toxicidade da proteína Vip3Aa50 a larvas da lagarta‑do‑cartucho (Spodoptera frugiperda) e da lagarta‑da‑soja (Anticarsia gemmatalis). O gene vip3A foi amplificado por PCR, com iniciadores específicos, e gerou um fragmento de 2.370 pb. Esse fragmento foi clonado em vetor pGEM‑T Easy e, em seguida, sequenciado, subclonado em vetor de expressão pET‑28a (+) e inserido em células de Escherichia coli BL21 (DE3). A expressão da proteína Vip3Aa50 foi induzida por isopropil‑β‑D‑1-tiogalactopiranosídeo (IPTG), visualizada em SDS‑PAGE e detectada por "Western blot". Os ensaios de toxicidade revelaram alta atividade da proteína Vip3Aa50 contra as larvas neonatas da lagarta‑da‑soja e da lagarta‑do‑cartucho, com CL50 de 20,3 e 79,6 ng cm‑2, respectivamente. O gene vip3Aa50 é um novo gene da classe vip3A. |
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Palavras-Chave: |
Expressão heteróloga; Heterologous expression; Proteína inseticida vegetativa; Vegetative insecticidal protein. |
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Thesagro: |
Anticarsia gemmatalis; Controle biológico; Lagarta; Spodoptera Frugiperda. |
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Thesaurus NAL: |
Biological control. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/98596/1/Caracterizacao-do-gene-vip3A.pdf
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Marc: |
LEADER 02049naa a2200289 a 4500
001 1981633
005 2017-07-05
008 2013 bl uuuu u00u1 u #d
100 1 $aFIGUEIREDO, C. S.
245 $aCaracterização do gene vip3A e toxidade da proteína Vip3Aa50 à lagarta-do-cartucho e à lagarta-da-soja.
260 $c2013
500 $aTítulo em inglês: Characterization of the vip3A gene and toxicity of Vip3Aa50 protein to fall armyworm and velvetbean caterpillar.
520 $aO objetivo deste trabalho foi caracterizar o gene vip3A de Bacillus thuringiensis e verificar a toxicidade da proteína Vip3Aa50 a larvas da lagarta‑do‑cartucho (Spodoptera frugiperda) e da lagarta‑da‑soja (Anticarsia gemmatalis). O gene vip3A foi amplificado por PCR, com iniciadores específicos, e gerou um fragmento de 2.370 pb. Esse fragmento foi clonado em vetor pGEM‑T Easy e, em seguida, sequenciado, subclonado em vetor de expressão pET‑28a (+) e inserido em células de Escherichia coli BL21 (DE3). A expressão da proteína Vip3Aa50 foi induzida por isopropil‑β‑D‑1-tiogalactopiranosídeo (IPTG), visualizada em SDS‑PAGE e detectada por "Western blot". Os ensaios de toxicidade revelaram alta atividade da proteína Vip3Aa50 contra as larvas neonatas da lagarta‑da‑soja e da lagarta‑do‑cartucho, com CL50 de 20,3 e 79,6 ng cm‑2, respectivamente. O gene vip3Aa50 é um novo gene da classe vip3A.
650 $aBiological control
650 $aAnticarsia gemmatalis
650 $aControle biológico
650 $aLagarta
650 $aSpodoptera Frugiperda
653 $aExpressão heteróloga
653 $aHeterologous expression
653 $aProteína inseticida vegetativa
653 $aVegetative insecticidal protein
700 1 $aMARUCCI, S. C.
700 1 $aTEZZA, R. I. D.
700 1 $aLEMOS, M. V. F.
700 1 $aDESIDÉRIO, J. A.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 48, n. 9, p. 1220-1227, set. 2013.
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