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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
13/08/2014 |
Data da última atualização: |
14/08/2014 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
SILVA, P. P. G. da; ANDRADE, C. de L. T. de; AMARAL, T. A.; CASTRO, A. A. de; TEIXEIRA, T. C.; PAIXAO, J. S. |
Afiliação: |
PRISCILA PONCIANA GOMES DA SILVA, UFSJ, Sete Lagoas, MG.; CAMILO DE LELIS TEIXEIRA DE ANDRADE, CNPMS; TALES ANTONIO AMARAL, UFPEL, Pelotas, RS.; ALINE APARECIDA DE CASTRO, UNIFEMM, Sete Lagoas, MG.; JESSICA SOUSA PAIXAO, UFSJ, Sete Lagoas, MG. |
Título: |
Análise da sensibilidade da cultura do milho às mudanças climáticas empregando modelos de simulação: 1 - resposta às alterações na temperatura do ar. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE MILHO E SORGO, 30.; SIMPÓSIO SOBRE LEPDÓPTEROS COMUNS A MILHO, SOJA E ALGODÃO, 1., 2014, Salvador. Eficiência nas cadeias produtivas e o abastecimento global: resumos expandidos. Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2014. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Palavras-Chave: |
DSSAT. |
Thesagro: |
Mudança Climática; Zea Mays. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/106563/1/Analise-sensibilidade-1.pdf
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Marc: |
LEADER 00914nam a2200205 a 4500 001 1992455 005 2014-08-14 008 2014 bl uuuu u00u1 u #d 100 1 $aSILVA, P. P. G. da 245 $aAnálise da sensibilidade da cultura do milho às mudanças climáticas empregando modelos de simulação$b1 - resposta às alterações na temperatura do ar.$h[electronic resource] 260 $aIn: CONGRESSO NACIONAL DE MILHO E SORGO, 30.; SIMPÓSIO SOBRE LEPDÓPTEROS COMUNS A MILHO, SOJA E ALGODÃO, 1., 2014, Salvador. Eficiência nas cadeias produtivas e o abastecimento global: resumos expandidos. Sete Lagoas: Associação Brasileira de Milho e Sorgo$c2014 300 $c1 CD-ROM. 650 $aMudança Climática 650 $aZea Mays 653 $aDSSAT 700 1 $aANDRADE, C. de L. T. de 700 1 $aAMARAL, T. A. 700 1 $aCASTRO, A. A. de 700 1 $aTEIXEIRA, T. C. 700 1 $aPAIXAO, J. S.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
10/12/2019 |
Data da última atualização: |
10/12/2019 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
RAKOCEVIC, M.; BATISTA, E. R.; MATSUNAGA, F. T.; MUNIZ, G. |
Afiliação: |
M. RAKOCEVIC, Unicamp; EUNICE REIS BATISTA, CNPMA; F. T. MATSUNAGA, UNESPAR; G. MUNIZ, Unicamp. |
Título: |
Estimations of leaf CO2 assimilation, stomatal conductance and transpiration in adult Arabic coffee plants after long-term FACE cultivation. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
In: AGRICULTURE AND CLIMATE CHANGE CONFERENCE, 3., 2019, Budapest. [Abstracts...] Budapest: Elsevier Ltd., 2019. Ref. P074. |
Idioma: |
Português |
Conteúdo: |
The air [CO2] can reach 600 ?L CO2 L-1 in the middle or the end of this century, depending on scenario. The first plant response to elevated CO2 (e[CO2]) is the increased leaf photosynthetic rate (A) occurring parallelly by mainly non-sensitive or decreased stomatal conductance (gs) and decreased transpiration (E). In Arabic coffee, A increases under e[CO2], especially during the dry growing season, while gs responses vary during years under free-air-CO2-enrichment (FACE). The aim of this study was to estimate A, gs and E over a coffee vertical profile after five years cultivation under FACE, including the responses to water availability. Coffee was cultivated under two CO2 conditions, actual (a[CO2], ~390?L CO2 L-1) and e[CO2] (~590?L CO2 L-1). The irrigation started at the end of the 4th year of experiment. The measurements were conducted in rainy season, in February 2016 (grain expansion). Values of photosynthetic active radiation (PAR) varied from 1131 to 0 ?mol photons m?2 s?1 to construct curves of A, gs and E dependence on PAR in four 50 cm-thick layers. Simultaneously, PAR was measured in the morning, midday and afternoon. Punctual values were estimated from nonrectangular hyperbola (A) and polynomial (gs and E) models. PAR reached ~1400 ?mol m?2 s ?1 at the highest plant layer at midday, while the transmitted PAR at soil level was about 4 ?mol m?2 s?1. The A diminished gradually from plant top to bottom, from 7.2 to -1 ?mol m?2 s?1. The A was positively impacted by e[CO2] in the highest and low layers. The gs and E showed similar trends in daily variation and in responses to CO2 and water availability treatments, showing lower values under e[CO2] than a[CO2] over the plant profile, with exception of the most shaded leaves. Results suggest better water economy under e[CO2] than a[CO2] under high light conditions. MenosThe air [CO2] can reach 600 ?L CO2 L-1 in the middle or the end of this century, depending on scenario. The first plant response to elevated CO2 (e[CO2]) is the increased leaf photosynthetic rate (A) occurring parallelly by mainly non-sensitive or decreased stomatal conductance (gs) and decreased transpiration (E). In Arabic coffee, A increases under e[CO2], especially during the dry growing season, while gs responses vary during years under free-air-CO2-enrichment (FACE). The aim of this study was to estimate A, gs and E over a coffee vertical profile after five years cultivation under FACE, including the responses to water availability. Coffee was cultivated under two CO2 conditions, actual (a[CO2], ~390?L CO2 L-1) and e[CO2] (~590?L CO2 L-1). The irrigation started at the end of the 4th year of experiment. The measurements were conducted in rainy season, in February 2016 (grain expansion). Values of photosynthetic active radiation (PAR) varied from 1131 to 0 ?mol photons m?2 s?1 to construct curves of A, gs and E dependence on PAR in four 50 cm-thick layers. Simultaneously, PAR was measured in the morning, midday and afternoon. Punctual values were estimated from nonrectangular hyperbola (A) and polynomial (gs and E) models. PAR reached ~1400 ?mol m?2 s ?1 at the highest plant layer at midday, while the transmitted PAR at soil level was about 4 ?mol m?2 s?1. The A diminished gradually from plant top to bottom, from 7.2 to -1 ?mol m?2 s?1. The A was positively impacted by ... Mostrar Tudo |
Palavras-Chave: |
Dought; Elevated CO2; Light microclimate; Plant vertical profile. |
Thesagro: |
Seca. |
Categoria do assunto: |
H Saúde e Patologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/206681/1/RA-BatistaER-3rdAgricultureClimate...-2019-RefP074.pdf
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Marc: |
LEADER 02584nam a2200205 a 4500 001 2116559 005 2019-12-10 008 2019 bl uuuu u00u1 u #d 100 1 $aRAKOCEVIC, M. 245 $aEstimations of leaf CO2 assimilation, stomatal conductance and transpiration in adult Arabic coffee plants after long-term FACE cultivation.$h[electronic resource] 260 $aIn: AGRICULTURE AND CLIMATE CHANGE CONFERENCE, 3., 2019, Budapest. [Abstracts...] Budapest: Elsevier Ltd., 2019. Ref. P074.$c2019 520 $aThe air [CO2] can reach 600 ?L CO2 L-1 in the middle or the end of this century, depending on scenario. The first plant response to elevated CO2 (e[CO2]) is the increased leaf photosynthetic rate (A) occurring parallelly by mainly non-sensitive or decreased stomatal conductance (gs) and decreased transpiration (E). In Arabic coffee, A increases under e[CO2], especially during the dry growing season, while gs responses vary during years under free-air-CO2-enrichment (FACE). The aim of this study was to estimate A, gs and E over a coffee vertical profile after five years cultivation under FACE, including the responses to water availability. Coffee was cultivated under two CO2 conditions, actual (a[CO2], ~390?L CO2 L-1) and e[CO2] (~590?L CO2 L-1). The irrigation started at the end of the 4th year of experiment. The measurements were conducted in rainy season, in February 2016 (grain expansion). Values of photosynthetic active radiation (PAR) varied from 1131 to 0 ?mol photons m?2 s?1 to construct curves of A, gs and E dependence on PAR in four 50 cm-thick layers. Simultaneously, PAR was measured in the morning, midday and afternoon. Punctual values were estimated from nonrectangular hyperbola (A) and polynomial (gs and E) models. PAR reached ~1400 ?mol m?2 s ?1 at the highest plant layer at midday, while the transmitted PAR at soil level was about 4 ?mol m?2 s?1. The A diminished gradually from plant top to bottom, from 7.2 to -1 ?mol m?2 s?1. The A was positively impacted by e[CO2] in the highest and low layers. The gs and E showed similar trends in daily variation and in responses to CO2 and water availability treatments, showing lower values under e[CO2] than a[CO2] over the plant profile, with exception of the most shaded leaves. Results suggest better water economy under e[CO2] than a[CO2] under high light conditions. 650 $aSeca 653 $aDought 653 $aElevated CO2 653 $aLight microclimate 653 $aPlant vertical profile 700 1 $aBATISTA, E. R. 700 1 $aMATSUNAGA, F. T. 700 1 $aMUNIZ, G.
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