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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
11/02/2011 |
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Data da última atualização: |
18/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VELAME, L. de M; COELHO FILHO, M. A.; PAZ, V. P. S.; COELHO, E. F. |
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Afiliação: |
Lucas de Mello Velame, ESALQ; MAURICIO ANTONIO COELHO FILHO, CNPMF; Vital Pedro Silva Paz, UFRB; EUGENIO FERREIRA COELHO, CNPMF. |
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Título: |
Stem heat balance method to estimate transpiration of young orange and mango plants. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 14, n. 6, p. 594-599, 2010. |
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ISSN: |
1415-4366 |
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Idioma: |
Inglês |
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Conteúdo: |
The present study had as its main objective the evaluation of the heat balance method in young orange and mango plants under protected environment. The work was carried out at Embrapa Cassava and Tropical Fruits, Cruz das Almas, BA. Later on, estimates of sap flow were conducted for two mango plants cultivated in pots of 15 and 50 L installed on weighting platforms of 45 and 140 kg; sap flow was determined in three orange plants, two of which were also installed on weighing platforms. The values of sap flow were compared to the transpiration measured by lysimeters at integrated intervals of 1, 2, 4 and 24 h. The heat balance method showed good precision for estimating daily transpiration (R2 = 0.95 and R2 = 0.90), accompaning the availability of energy in the system, underestimating on average 4.6% of the daily transpiration in orange plants and overestimating in about 0.3% the daily transpiration of mango plants under conditions of good water supply. The heat balance method underestimated by 16% the transpiration in orange under conditions of water deficit. |
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Palavras-Chave: |
Estresse hidrico. |
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Thesagro: |
Irrigação. |
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Thesaurus Nal: |
lysimeters; sap flow; water stress. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01773naa a2200229 a 4500
001 1876912
005 2022-08-18
008 2010 bl uuuu u00u1 u #d
022 $a1415-4366
100 1 $aVELAME, L. de M
245 $aStem heat balance method to estimate transpiration of young orange and mango plants.$h[electronic resource]
260 $c2010
520 $aThe present study had as its main objective the evaluation of the heat balance method in young orange and mango plants under protected environment. The work was carried out at Embrapa Cassava and Tropical Fruits, Cruz das Almas, BA. Later on, estimates of sap flow were conducted for two mango plants cultivated in pots of 15 and 50 L installed on weighting platforms of 45 and 140 kg; sap flow was determined in three orange plants, two of which were also installed on weighing platforms. The values of sap flow were compared to the transpiration measured by lysimeters at integrated intervals of 1, 2, 4 and 24 h. The heat balance method showed good precision for estimating daily transpiration (R2 = 0.95 and R2 = 0.90), accompaning the availability of energy in the system, underestimating on average 4.6% of the daily transpiration in orange plants and overestimating in about 0.3% the daily transpiration of mango plants under conditions of good water supply. The heat balance method underestimated by 16% the transpiration in orange under conditions of water deficit.
650 $alysimeters
650 $asap flow
650 $awater stress
650 $aIrrigação
653 $aEstresse hidrico
700 1 $aCOELHO FILHO, M. A.
700 1 $aPAZ, V. P. S.
700 1 $aCOELHO, E. F.
773 $tRevista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande$gv. 14, n. 6, p. 594-599, 2010.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Classificação |
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Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria Tropical. |
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Data corrente: |
20/09/2011 |
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Data da última atualização: |
02/05/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
MARTINS, M. V. V.; SILVEIRA, S. F.; MAFFIA, L. A.; ROCABADO, J. M. A.; MUSSI-DIAS, V. |
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Afiliação: |
MARLON VAGNER VALENTIM MARTINS, CNPAT; UENF; UFV. |
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Título: |
Chemical control of guava rust (Puccinia psidii) in the Northern Region of Rio de Janeiro State, Brazil. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Australasian Plant Pathology, v. 40, n. 1, p. 48-54, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Fungicides were evaluated under field conditions for their efficacy in the control of guava rust (Puccinia psidii); five systemic fungicides (azoxystrobin, pyraclostrobin, cyproconazole, tebuconazole, triadimenol) and the protectant mancozeb. In a first trial, the fungicides were applied at two-week intervals intercalated with bi-weekly sprays of copper oxychloride. The initial incidence of rust on flower buds before treatment was 47%. Triadimenol and azoxystrobin were most effective in reducing the incidence of rust on fruit. The minimum rust incidence achieved with triadimenol was 12% compared to 84% in the control treatment (water). The initial level of rust on flower buds was particularly high for the tebuconazole treatment, which may have contributed to the ineffective control by this fungicide in the first trial. In the second trial, copper oxychloride sprays were applied when disease incidence on flower buds was low (7%). Azoxystrobin, tebuconazole, triadimenol and mancozeb treatments were started nine days after a second application of copper oxychloride. The fungicides were then applied at bi-weekly intervals and at the same concentrations as in the first trial. Triadimenol was again most effective in controlling rust, although its effect did not greatly differ from that of tebuconazole. The maximum disease incidence in all fungicide treatments was significantly lower than that observed in the control treatment. |
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Palavras-Chave: |
Yield losses. |
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Thesagro: |
Psidium Guajava. |
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Thesaurus NAL: |
fungicides. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/42152/1/AB111003.pdf
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Marc: |
LEADER 02050naa a2200205 a 4500
001 1900972
005 2017-05-02
008 2011 bl uuuu u00u1 u #d
100 1 $aMARTINS, M. V. V.
245 $aChemical control of guava rust (Puccinia psidii) in the Northern Region of Rio de Janeiro State, Brazil.
260 $c2011
520 $aFungicides were evaluated under field conditions for their efficacy in the control of guava rust (Puccinia psidii); five systemic fungicides (azoxystrobin, pyraclostrobin, cyproconazole, tebuconazole, triadimenol) and the protectant mancozeb. In a first trial, the fungicides were applied at two-week intervals intercalated with bi-weekly sprays of copper oxychloride. The initial incidence of rust on flower buds before treatment was 47%. Triadimenol and azoxystrobin were most effective in reducing the incidence of rust on fruit. The minimum rust incidence achieved with triadimenol was 12% compared to 84% in the control treatment (water). The initial level of rust on flower buds was particularly high for the tebuconazole treatment, which may have contributed to the ineffective control by this fungicide in the first trial. In the second trial, copper oxychloride sprays were applied when disease incidence on flower buds was low (7%). Azoxystrobin, tebuconazole, triadimenol and mancozeb treatments were started nine days after a second application of copper oxychloride. The fungicides were then applied at bi-weekly intervals and at the same concentrations as in the first trial. Triadimenol was again most effective in controlling rust, although its effect did not greatly differ from that of tebuconazole. The maximum disease incidence in all fungicide treatments was significantly lower than that observed in the control treatment.
650 $afungicides
650 $aPsidium Guajava
653 $aYield losses
700 1 $aSILVEIRA, S. F.
700 1 $aMAFFIA, L. A.
700 1 $aROCABADO, J. M. A.
700 1 $aMUSSI-DIAS, V.
773 $tAustralasian Plant Pathology$gv. 40, n. 1, p. 48-54, 2011.
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Embrapa Agroindústria Tropical (CNPAT) |
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