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Biblioteca(s): |
Embrapa Solos / UEP-Recife; Embrapa Unidades Centrais. |
Data corrente: |
29/03/2011 |
Data da última atualização: |
09/05/2018 |
Autoria: |
BERGAMASCHI, H.; DALMAGO, G. A.; BERGONCI, J. I.; KRUGER, C. A. M. B.; HECKLER, B. M. M.; COMIRAM, F. |
Afiliação: |
Homero Bergamaschi, Universidade Federal do Rio Grande do Sul (UFRGS); GENEI ANTONIO DALMAGO, CNPT; João Ito Bergonci, UFRGS, Departamento de Botânica; Cleusa Adriane Menegassi Bianchi Krüger, Universidade Regional do Noroeste do Estado do Rio Grande do Sul (UNIJUI); Bruna Maria Machado Heckler, Empresa de Assistência Técnica e Extensão Rural; Flavia Comiran, Instituto Agronômico do Paraná. |
Título: |
Intercepted solar radiation by maize crops subjected to different tillage systems and water availability levels. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 12, p. 1331-1341, dez. 2010 |
Idioma: |
Inglês |
Notas: |
Título em português: Radiação solar interceptada pela cultura do milho sob diferentes níveis de preparo do solo e disponibilidade hídrica. |
Conteúdo: |
Abstract - The objective of this work was to evaluate changes in the photosynthetic photon flux density (PPFD) interception efficiency and PPFD extinction coefficient for maize crop subjected to different soil tillage systems and water availability levels. Crops were subjected to no-tillage and conventional tillage systems combined with full irrigation and non-irrigation treatments. Continuous measurements of transmitted PPFD on the soil surface and incoming PPFD over the canopy were taken throughout the crop cycle. Leaf area index and soil water potential were also measured during the whole period. Considering a mean value over the maize cycle, intercepted PPFD was higher in the conventional tillage than in the no-tillage system. During the initial stages of plants, intercepted PPFD in the conventional tillage was double the PPFD interception in the no-tillage treatment. However, those differences were reduced up to the maximum leaf area index, close to tasseling stage. The lowest interception of PPFD occurred in the conventional tillage during the reproductive period, as leaf senescence progressed. Over the entire crop cycle, the interception of PPFD by the non-irrigated plants was about 20% lower than by the irrigated plants. The no-tillage system reduced the extinction coefficient for PPFD, which may have allowed a higher penetration of solar radiation into the canopy. |
Palavras-Chave: |
Photosynthetic photon flux density; Water deficit. |
Thesagro: |
Zea Mays. |
Thesaurus Nal: |
leaf area; no-tillage. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/105584/1/Intercepted-solar.pdf
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Marc: |
LEADER 02301naa a2200253 a 4500 001 1883598 005 2018-05-09 008 2010 bl uuuu u00u1 u #d 100 1 $aBERGAMASCHI, H. 245 $aIntercepted solar radiation by maize crops subjected to different tillage systems and water availability levels. 260 $c2010 500 $aTítulo em português: Radiação solar interceptada pela cultura do milho sob diferentes níveis de preparo do solo e disponibilidade hídrica. 520 $aAbstract - The objective of this work was to evaluate changes in the photosynthetic photon flux density (PPFD) interception efficiency and PPFD extinction coefficient for maize crop subjected to different soil tillage systems and water availability levels. Crops were subjected to no-tillage and conventional tillage systems combined with full irrigation and non-irrigation treatments. Continuous measurements of transmitted PPFD on the soil surface and incoming PPFD over the canopy were taken throughout the crop cycle. Leaf area index and soil water potential were also measured during the whole period. Considering a mean value over the maize cycle, intercepted PPFD was higher in the conventional tillage than in the no-tillage system. During the initial stages of plants, intercepted PPFD in the conventional tillage was double the PPFD interception in the no-tillage treatment. However, those differences were reduced up to the maximum leaf area index, close to tasseling stage. The lowest interception of PPFD occurred in the conventional tillage during the reproductive period, as leaf senescence progressed. Over the entire crop cycle, the interception of PPFD by the non-irrigated plants was about 20% lower than by the irrigated plants. The no-tillage system reduced the extinction coefficient for PPFD, which may have allowed a higher penetration of solar radiation into the canopy. 650 $aleaf area 650 $ano-tillage 650 $aZea Mays 653 $aPhotosynthetic photon flux density 653 $aWater deficit 700 1 $aDALMAGO, G. A. 700 1 $aBERGONCI, J. I. 700 1 $aKRUGER, C. A. M. B. 700 1 $aHECKLER, B. M. M. 700 1 $aCOMIRAM, F. 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 45, n. 12, p. 1331-1341, dez. 2010
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Embrapa Unidades Centrais (AI-SEDE) |
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Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
12/08/1996 |
Data da última atualização: |
20/11/2023 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SIVIERO, A.; ASSIS, L. A. G.; NODA, H. |
Afiliação: |
AMAURI SIVIERO, CPAF-AC; L . A. G. Assis, Inpa; H. Noda, Inpa. |
Título: |
Reação de genótipos à mancha alvo do tomateiro (Corynespora cassiicola). |
Ano de publicação: |
1995 |
Fonte/Imprenta: |
Fitopatologia Brasileira, Brasília, DF, v. 20, p. 313, ago. 1995. Suplemento. R 213. |
ISSN: |
0100-4158 |
Idioma: |
Português |
Notas: |
Edição do XXVIII Congresso Brasileiro de Fitopalogia. |
Conteúdo: |
Corynespora cassiicola, causador da mancha lavo do tomateiro, é um dos principais patógenos desta cultura na região Amazônica. Um estudo sobre a reação de resistência à Corynespora cassiicola foi realizado utilizando-se dez genótipos de tomate. |
Palavras-Chave: |
Amazonas; Amazonia occidental; Amazônia Ocidental; Enfermedades y desórdenes de las plantas; Manaus (AM); Resistencia a la enfermedad; Western amazon. |
Thesagro: |
Corynespora cassiicola; Doença de planta; Fungo; Genótipo; Mancha Alvo; Tomate; Variedade resistente. |
Thesaurus NAL: |
Disease resistance; Genotype; Plant diseases and disorders; Solanum lycopersicum; Tomatoes. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/154599/1/833.pdf
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Marc: |
LEADER 01433nam a2200385 a 4500 001 1492070 005 2023-11-20 008 1995 bl uuuu u00u1 u #d 022 $a0100-4158 100 1 $aSIVIERO, A. 245 $aReação de genótipos à mancha alvo do tomateiro (Corynespora cassiicola).$h[electronic resource] 260 $aFitopatologia Brasileira, Brasília, DF, v. 20, p. 313, ago. 1995. Suplemento. R 213.$c1995 500 $aEdição do XXVIII Congresso Brasileiro de Fitopalogia. 520 $aCorynespora cassiicola, causador da mancha lavo do tomateiro, é um dos principais patógenos desta cultura na região Amazônica. Um estudo sobre a reação de resistência à Corynespora cassiicola foi realizado utilizando-se dez genótipos de tomate. 650 $aDisease resistance 650 $aGenotype 650 $aPlant diseases and disorders 650 $aSolanum lycopersicum 650 $aTomatoes 650 $aCorynespora cassiicola 650 $aDoença de planta 650 $aFungo 650 $aGenótipo 650 $aMancha Alvo 650 $aTomate 650 $aVariedade resistente 653 $aAmazonas 653 $aAmazonia occidental 653 $aAmazônia Ocidental 653 $aEnfermedades y desórdenes de las plantas 653 $aManaus (AM) 653 $aResistencia a la enfermedad 653 $aWestern amazon 700 1 $aASSIS, L. A. G. 700 1 $aNODA, H.
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