African Mahogany transpiration with Granier method and water table lysimeter
ABSTRACT The thermal dissipation probe (Granier method) is useful in the water deficit monitoring and irrigation management of African Mahogany, but its model needs proper adjustment. This paper aimed to adjust and validate the Granier sap flux model to estimate African Mahogany transpiration, measu...
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Universidade Federal de Campina Grande
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| Series: | Revista Brasileira de Engenharia Agrícola e Ambiental |
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| author | Ana C. O. Sérvulo Lucas M. Vellame Derblai Casaroli José Alves Júnior Pedro H. de Souza |
| author_facet | Ana C. O. Sérvulo Lucas M. Vellame Derblai Casaroli José Alves Júnior Pedro H. de Souza |
| author_sort | Ana C. O. Sérvulo |
| collection | DOAJ |
| description | ABSTRACT The thermal dissipation probe (Granier method) is useful in the water deficit monitoring and irrigation management of African Mahogany, but its model needs proper adjustment. This paper aimed to adjust and validate the Granier sap flux model to estimate African Mahogany transpiration, measure transpiration using lysimeter and relate it to atmospheric water demand. Weather conditions, transpiration and sap flux were monitored in three units of 2.5-year-old African Mahogany trees in constant water table lysimeter, in Goiânia, GO. Sapwood area (SA), leaf area (LA), transpiration measured by lysimeter (TLYS) and estimated by sap flux (TSF) were evaluated. The SA comprised 55.24% of the trunk’s transversal section. The LA varied from 11.95 to 10.66 m2. TLYS and TSF varied from 2.94 to 29.31 and from 0.94 to 15.45 L d-1, respectively. The original model underestimated transpiration by 44.4%, being the adjusted equation F = 268.25 . k1.231. SA was significant (F < 0.05). Due the root confinement, the transpiration showed low correlation, but positive, with the atmospheric water demand. |
| format | Article |
| id | doaj-art-ed3233471b5d44bdae0ac8a22e89adcd |
| institution | DOAJ |
| issn | 1807-1929 |
| language | English |
| publisher | Universidade Federal de Campina Grande |
| record_format | Article |
| series | Revista Brasileira de Engenharia Agrícola e Ambiental |
| spelling | doaj-art-ed3233471b5d44bdae0ac8a22e89adcd2025-08-20T03:21:12ZengUniversidade Federal de Campina GrandeRevista Brasileira de Engenharia Agrícola e Ambiental1807-192921532232610.1590/1807-1929/agriambi.v21n5p322-326S1415-43662017000500322African Mahogany transpiration with Granier method and water table lysimeterAna C. O. SérvuloLucas M. VellameDerblai CasaroliJosé Alves JúniorPedro H. de SouzaABSTRACT The thermal dissipation probe (Granier method) is useful in the water deficit monitoring and irrigation management of African Mahogany, but its model needs proper adjustment. This paper aimed to adjust and validate the Granier sap flux model to estimate African Mahogany transpiration, measure transpiration using lysimeter and relate it to atmospheric water demand. Weather conditions, transpiration and sap flux were monitored in three units of 2.5-year-old African Mahogany trees in constant water table lysimeter, in Goiânia, GO. Sapwood area (SA), leaf area (LA), transpiration measured by lysimeter (TLYS) and estimated by sap flux (TSF) were evaluated. The SA comprised 55.24% of the trunk’s transversal section. The LA varied from 11.95 to 10.66 m2. TLYS and TSF varied from 2.94 to 29.31 and from 0.94 to 15.45 L d-1, respectively. The original model underestimated transpiration by 44.4%, being the adjusted equation F = 268.25 . k1.231. SA was significant (F < 0.05). Due the root confinement, the transpiration showed low correlation, but positive, with the atmospheric water demand.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000500322&lng=en&tlng=enKhaya ivorensisfluxo de seivatranspiraçãolisimetriaárea do xilema |
| spellingShingle | Ana C. O. Sérvulo Lucas M. Vellame Derblai Casaroli José Alves Júnior Pedro H. de Souza African Mahogany transpiration with Granier method and water table lysimeter Revista Brasileira de Engenharia Agrícola e Ambiental Khaya ivorensis fluxo de seiva transpiração lisimetria área do xilema |
| title | African Mahogany transpiration with Granier method and water table lysimeter |
| title_full | African Mahogany transpiration with Granier method and water table lysimeter |
| title_fullStr | African Mahogany transpiration with Granier method and water table lysimeter |
| title_full_unstemmed | African Mahogany transpiration with Granier method and water table lysimeter |
| title_short | African Mahogany transpiration with Granier method and water table lysimeter |
| title_sort | african mahogany transpiration with granier method and water table lysimeter |
| topic | Khaya ivorensis fluxo de seiva transpiração lisimetria área do xilema |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000500322&lng=en&tlng=en |
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