GRADIENTES TÉRMICOS NATURAIS NA ESTIMATIVA DO FLUXO DE SEIVA PELO MÉTODO GRANIER
The effects of thermal gradients on stem add one methodological constraint for estimating sap flow through the Granier method (thermal dissipation probe). The present work studied the effect of natural thermal gradients on estimates of sap flow by using thermal dissipation probe in mango plants. The...
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| Format: | Article |
| Language: | English |
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Universidade Federal Rural do Semi-Árido
2011-01-01
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| Series: | Revista Caatinga |
| Online Access: | http://www.redalyc.org/articulo.oa?id=237116340016 |
| _version_ | 1818325863894089728 |
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| author | LUCAS MELO VELLAME MAURICIO ANTONIO COELHO FILHO VITAL PEDRO DA SILVA PAZ EUGÊNIO FERREIRA COELHO |
| author_facet | LUCAS MELO VELLAME MAURICIO ANTONIO COELHO FILHO VITAL PEDRO DA SILVA PAZ EUGÊNIO FERREIRA COELHO |
| author_sort | LUCAS MELO VELLAME |
| collection | DOAJ |
| description | The effects of thermal gradients on stem add one methodological constraint for estimating sap flow through the Granier method (thermal dissipation probe). The present work studied the effect of natural thermal gradients on estimates of sap flow by using thermal dissipation probe in mango plants. The study was carried by using mango plants of the cultivar Tommy Atkins during two development stages: (a) during the initial development phase of plants with leaf area of 0.66, 0.73, 1.78 m2 , planted in 15 and 50 liters pots. The study was carried in a greenhouse environment and in the field. Different thermal shields were used around the stem of plants in pots in order to minimize the effects of thermal natural gradients. The measurements of thermal differences were obtained from an adult plant with high leaf density and small exposition of branches to solar radiation. Sensors placed in stems of adult plant with high leaf density provided smaller thermal gradients compared to those inserted in young plant stems. It is necessary to cover the whole branch with neoprene and a shield (skirt type) of aluminum paper above and below the location of probe insertion for exposed branches. The air temperature at 2 m height may be used efficiently to correct thermal gradients. It is indispensable the correction of natural thermal gradients in the stem for adequate estimating sap flow density by the Granier method. |
| first_indexed | 2024-12-13T11:51:15Z |
| format | Article |
| id | doaj.art-555db06ef8704c67afa0f858ccff85c1 |
| institution | Directory Open Access Journal |
| issn | 0100-316X 1983-2125 |
| language | English |
| last_indexed | 2024-12-13T11:51:15Z |
| publishDate | 2011-01-01 |
| publisher | Universidade Federal Rural do Semi-Árido |
| record_format | Article |
| series | Revista Caatinga |
| spelling | doaj.art-555db06ef8704c67afa0f858ccff85c12022-12-21T23:47:21ZengUniversidade Federal Rural do Semi-ÁridoRevista Caatinga0100-316X1983-21252011-01-01241116122GRADIENTES TÉRMICOS NATURAIS NA ESTIMATIVA DO FLUXO DE SEIVA PELO MÉTODO GRANIERLUCAS MELO VELLAMEMAURICIO ANTONIO COELHO FILHOVITAL PEDRO DA SILVA PAZEUGÊNIO FERREIRA COELHOThe effects of thermal gradients on stem add one methodological constraint for estimating sap flow through the Granier method (thermal dissipation probe). The present work studied the effect of natural thermal gradients on estimates of sap flow by using thermal dissipation probe in mango plants. The study was carried by using mango plants of the cultivar Tommy Atkins during two development stages: (a) during the initial development phase of plants with leaf area of 0.66, 0.73, 1.78 m2 , planted in 15 and 50 liters pots. The study was carried in a greenhouse environment and in the field. Different thermal shields were used around the stem of plants in pots in order to minimize the effects of thermal natural gradients. The measurements of thermal differences were obtained from an adult plant with high leaf density and small exposition of branches to solar radiation. Sensors placed in stems of adult plant with high leaf density provided smaller thermal gradients compared to those inserted in young plant stems. It is necessary to cover the whole branch with neoprene and a shield (skirt type) of aluminum paper above and below the location of probe insertion for exposed branches. The air temperature at 2 m height may be used efficiently to correct thermal gradients. It is indispensable the correction of natural thermal gradients in the stem for adequate estimating sap flow density by the Granier method.http://www.redalyc.org/articulo.oa?id=237116340016 |
| spellingShingle | LUCAS MELO VELLAME MAURICIO ANTONIO COELHO FILHO VITAL PEDRO DA SILVA PAZ EUGÊNIO FERREIRA COELHO GRADIENTES TÉRMICOS NATURAIS NA ESTIMATIVA DO FLUXO DE SEIVA PELO MÉTODO GRANIER Revista Caatinga |
| title | GRADIENTES TÉRMICOS NATURAIS NA ESTIMATIVA DO FLUXO DE SEIVA PELO MÉTODO GRANIER |
| title_full | GRADIENTES TÉRMICOS NATURAIS NA ESTIMATIVA DO FLUXO DE SEIVA PELO MÉTODO GRANIER |
| title_fullStr | GRADIENTES TÉRMICOS NATURAIS NA ESTIMATIVA DO FLUXO DE SEIVA PELO MÉTODO GRANIER |
| title_full_unstemmed | GRADIENTES TÉRMICOS NATURAIS NA ESTIMATIVA DO FLUXO DE SEIVA PELO MÉTODO GRANIER |
| title_short | GRADIENTES TÉRMICOS NATURAIS NA ESTIMATIVA DO FLUXO DE SEIVA PELO MÉTODO GRANIER |
| title_sort | gradientes termicos naturais na estimativa do fluxo de seiva pelo metodo granier |
| url | http://www.redalyc.org/articulo.oa?id=237116340016 |
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