Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere system
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Meteorologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862011000200002 |
Resumo: | The uptake of water from the roots of crops comes to being a physiological response of the plant to the water loss process through its stomata. Getting to know the daily transpiration rates throughout the phenological cycle allows for the application of the ideal amount of irrigation water at the right moment to maximize production with environmental protection. Since transpiration direct measurements at the field, mainly for trees in general, are to be of operational difficulty and relatively high cost we came up with a methodology that allows one to calculate the daily transpiration rates of apple trees and citrus orchards from variables of both the physical environment and the crop. The input data of the proposed model are air temperature, air relative humidity, photoperiod duration, and leaf area. Estimated transpiration rates based on the water potential gradient between the air and leaf approach were comparable in apple trees and citrus orchards. Sap flow daily values were obtained by means of the heat balance method at Bordeaux, France, and Piracicaba, SP, Brazil. All the coefficients of determination of the regression equations obtained herein were higher than 0.93. This allows one to calculate the amount of irrigation water to be applied throughout the crop growing seasons with a high precision as a function of meteorological data and crop covering density at the sites in the study. |
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Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere systemmodelingwater consumptionchemical potentialdiffusive resistancewoody cropsweathermeteorological datairrigation planningThe uptake of water from the roots of crops comes to being a physiological response of the plant to the water loss process through its stomata. Getting to know the daily transpiration rates throughout the phenological cycle allows for the application of the ideal amount of irrigation water at the right moment to maximize production with environmental protection. Since transpiration direct measurements at the field, mainly for trees in general, are to be of operational difficulty and relatively high cost we came up with a methodology that allows one to calculate the daily transpiration rates of apple trees and citrus orchards from variables of both the physical environment and the crop. The input data of the proposed model are air temperature, air relative humidity, photoperiod duration, and leaf area. Estimated transpiration rates based on the water potential gradient between the air and leaf approach were comparable in apple trees and citrus orchards. Sap flow daily values were obtained by means of the heat balance method at Bordeaux, France, and Piracicaba, SP, Brazil. All the coefficients of determination of the regression equations obtained herein were higher than 0.93. This allows one to calculate the amount of irrigation water to be applied throughout the crop growing seasons with a high precision as a function of meteorological data and crop covering density at the sites in the study.Sociedade Brasileira de Meteorologia2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862011000200002Revista Brasileira de Meteorologia v.26 n.2 2011reponame:Revista Brasileira de Meteorologia (Online)instname:Sociedade Brasileira de Meteorologia (SBMET)instacron:SBMET10.1590/S0102-77862011000200002info:eu-repo/semantics/openAccessPereira,André BelmontVilla Nova,Nilson AugustoPires,Luiz FernandoAlfaro,Adriane Theodoroeng2011-08-05T00:00:00Zoai:scielo:S0102-77862011000200002Revistahttp://www.rbmet.org.br/port/index.phpONGhttps://old.scielo.br/oai/scielo-oai.php||rbmet@rbmet.org.br1982-43510102-7786opendoar:2011-08-05T00:00Revista Brasileira de Meteorologia (Online) - Sociedade Brasileira de Meteorologia (SBMET)false |
dc.title.none.fl_str_mv |
Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere system |
title |
Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere system |
spellingShingle |
Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere system Pereira,André Belmont modeling water consumption chemical potential diffusive resistance woody crops weather meteorological data irrigation planning |
title_short |
Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere system |
title_full |
Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere system |
title_fullStr |
Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere system |
title_full_unstemmed |
Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere system |
title_sort |
Transpiration of irrigated apple trees and citrus from a water potential gradient approach in the leaf-atmosphere system |
author |
Pereira,André Belmont |
author_facet |
Pereira,André Belmont Villa Nova,Nilson Augusto Pires,Luiz Fernando Alfaro,Adriane Theodoro |
author_role |
author |
author2 |
Villa Nova,Nilson Augusto Pires,Luiz Fernando Alfaro,Adriane Theodoro |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Pereira,André Belmont Villa Nova,Nilson Augusto Pires,Luiz Fernando Alfaro,Adriane Theodoro |
dc.subject.por.fl_str_mv |
modeling water consumption chemical potential diffusive resistance woody crops weather meteorological data irrigation planning |
topic |
modeling water consumption chemical potential diffusive resistance woody crops weather meteorological data irrigation planning |
description |
The uptake of water from the roots of crops comes to being a physiological response of the plant to the water loss process through its stomata. Getting to know the daily transpiration rates throughout the phenological cycle allows for the application of the ideal amount of irrigation water at the right moment to maximize production with environmental protection. Since transpiration direct measurements at the field, mainly for trees in general, are to be of operational difficulty and relatively high cost we came up with a methodology that allows one to calculate the daily transpiration rates of apple trees and citrus orchards from variables of both the physical environment and the crop. The input data of the proposed model are air temperature, air relative humidity, photoperiod duration, and leaf area. Estimated transpiration rates based on the water potential gradient between the air and leaf approach were comparable in apple trees and citrus orchards. Sap flow daily values were obtained by means of the heat balance method at Bordeaux, France, and Piracicaba, SP, Brazil. All the coefficients of determination of the regression equations obtained herein were higher than 0.93. This allows one to calculate the amount of irrigation water to be applied throughout the crop growing seasons with a high precision as a function of meteorological data and crop covering density at the sites in the study. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862011000200002 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862011000200002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0102-77862011000200002 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Meteorologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Meteorologia |
dc.source.none.fl_str_mv |
Revista Brasileira de Meteorologia v.26 n.2 2011 reponame:Revista Brasileira de Meteorologia (Online) instname:Sociedade Brasileira de Meteorologia (SBMET) instacron:SBMET |
instname_str |
Sociedade Brasileira de Meteorologia (SBMET) |
instacron_str |
SBMET |
institution |
SBMET |
reponame_str |
Revista Brasileira de Meteorologia (Online) |
collection |
Revista Brasileira de Meteorologia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Meteorologia (Online) - Sociedade Brasileira de Meteorologia (SBMET) |
repository.mail.fl_str_mv |
||rbmet@rbmet.org.br |
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1752122084027269120 |