THE IMPORTANCE OF SAP FLOW MEASUREMENTS TO ESTIMATE ACTUAL WATER USE OF MESKI OLIVE TREES UNDER DIFFERENT IRRIGATION REGIMES IN TUNISIA
Identifieur interne : 000322 ( Main/Merge ); précédent : 000321; suivant : 000323THE IMPORTANCE OF SAP FLOW MEASUREMENTS TO ESTIMATE ACTUAL WATER USE OF MESKI OLIVE TREES UNDER DIFFERENT IRRIGATION REGIMES IN TUNISIA
Auteurs : Maurits W. Vandegehuchte [Belgique] ; Mohamed Braham [Tunisie] ; Raoul Lemeur [Belgique] ; Kathy Steppe [Belgique]Source :
- Irrigation and Drainage [ 1531-0353 ] ; 2012-12.
Abstract
Improvement in irrigation techniques has led to an expansion of the irrigated olive area in Tunisia and consequently a rise in agricultural water consumption. Here, the actual water use of Olea europaea L. ‘Meski’ as estimated by thermal dissipation probe measurements was compared for different irrigation regimes: three plots with irrigation doses based on Penman–Monteith crop evapotranspiration (ETc), 0.33 × ETc and the local grower's experience (about 0.6 × ETc), respectively. The scaling up of sap flux densities proved to be difficult given the azimuthal and radial sap flux density variability and the conductive surface area asymmetry. Moreover, natural thermal gradients may lead to inaccurate use of standard sap flow formulas. Depending on the manner of upscaling, differences in water use of more than 50 l day‐1 per tree were obtained (up to 0.7 × ETc irrigation dose). Despite these difficulties, sap flow calculations seem crucial to accurately determine the water needs of the orchard under investigation, as they corresponded closely to the lowest irrigation dose which was considered sufficiently high as no significant differences in drought stress variables were detected between the plots. Therefore, irrigation based solely on ETc leads to wasting of water; hence, careful application of both meteorological and sap flow methods is desirable in irrigation scheduling. Copyright © 2012 John Wiley & Sons, Ltd.
Url:
DOI: 10.1002/ird.1670
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000C49
- to stream Istex, to step Curation: 000C44
- to stream Istex, to step Checkpoint: 000093
Links to Exploration step
ISTEX:FC4AC0A2D5CB6060B068A09E55F15914C354E550Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">THE IMPORTANCE OF SAP FLOW MEASUREMENTS TO ESTIMATE ACTUAL WATER USE OF MESKI OLIVE TREES UNDER DIFFERENT IRRIGATION REGIMES IN TUNISIA</title><author><name sortKey="Vandegehuchte, Maurits W" sort="Vandegehuchte, Maurits W" uniqKey="Vandegehuchte M" first="Maurits W." last="Vandegehuchte">Maurits W. Vandegehuchte</name></author><author><name sortKey="Braham, Mohamed" sort="Braham, Mohamed" uniqKey="Braham M" first="Mohamed" last="Braham">Mohamed Braham</name></author><author><name sortKey="Lemeur, Raoul" sort="Lemeur, Raoul" uniqKey="Lemeur R" first="Raoul" last="Lemeur">Raoul Lemeur</name></author><author><name sortKey="Steppe, Kathy" sort="Steppe, Kathy" uniqKey="Steppe K" first="Kathy" last="Steppe">Kathy Steppe</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:FC4AC0A2D5CB6060B068A09E55F15914C354E550</idno><date when="2012" year="2012">2012</date><idno type="doi">10.1002/ird.1670</idno><idno type="url">https://api.istex.fr/document/FC4AC0A2D5CB6060B068A09E55F15914C354E550/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000C49</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000C49</idno><idno type="wicri:Area/Istex/Curation">000C44</idno><idno type="wicri:Area/Istex/Checkpoint">000093</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000093</idno><idno type="wicri:doubleKey">1531-0353:2012:Vandegehuchte M:the:importance:of</idno><idno type="wicri:Area/Main/Merge">000322</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">THE IMPORTANCE OF SAP FLOW MEASUREMENTS TO ESTIMATE ACTUAL WATER USE OF MESKI OLIVE TREES UNDER DIFFERENT IRRIGATION REGIMES IN TUNISIA</title><author><name sortKey="Vandegehuchte, Maurits W" sort="Vandegehuchte, Maurits W" uniqKey="Vandegehuchte M" first="Maurits W." last="Vandegehuchte">Maurits W. Vandegehuchte</name><affiliation wicri:level="4"><country xml:lang="fr">Belgique</country><wicri:regionArea>Laboratory of Plant Ecology, Department of Applied Ecology and Environmental Biology, Faculty of Bioscience Engineering, Ghent University, Ghent</wicri:regionArea><orgName type="university">Université de Gand</orgName><placeName><settlement type="city">Gand</settlement><region>Région flamande</region><region type="district" nuts="2">Province de Flandre-Orientale</region></placeName></affiliation><affiliation wicri:level="1"><country wicri:rule="url">Belgique</country></affiliation></author><author><name sortKey="Braham, Mohamed" sort="Braham, Mohamed" uniqKey="Braham M" first="Mohamed" last="Braham">Mohamed Braham</name><affiliation wicri:level="1"><country xml:lang="fr">Tunisie</country><wicri:regionArea>Institute of the Olive Tree Station of Sousse, Sousse</wicri:regionArea><wicri:noRegion>Sousse</wicri:noRegion></affiliation></author><author><name sortKey="Lemeur, Raoul" sort="Lemeur, Raoul" uniqKey="Lemeur R" first="Raoul" last="Lemeur">Raoul Lemeur</name><affiliation wicri:level="4"><country xml:lang="fr">Belgique</country><wicri:regionArea>Laboratory of Plant Ecology, Department of Applied Ecology and Environmental Biology, Faculty of Bioscience Engineering, Ghent University, Ghent</wicri:regionArea><orgName type="university">Université de Gand</orgName><placeName><settlement type="city">Gand</settlement><region>Région flamande</region><region type="district" nuts="2">Province de Flandre-Orientale</region></placeName></affiliation></author><author><name sortKey="Steppe, Kathy" sort="Steppe, Kathy" uniqKey="Steppe K" first="Kathy" last="Steppe">Kathy Steppe</name><affiliation wicri:level="4"><country xml:lang="fr">Belgique</country><wicri:regionArea>Laboratory of Plant Ecology, Department of Applied Ecology and Environmental Biology, Faculty of Bioscience Engineering, Ghent University, Ghent</wicri:regionArea><orgName type="university">Université de Gand</orgName><placeName><settlement type="city">Gand</settlement><region>Région flamande</region><region type="district" nuts="2">Province de Flandre-Orientale</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Irrigation and Drainage</title><title level="j" type="abbrev">Irrig. and Drain.</title><idno type="ISSN">1531-0353</idno><idno type="eISSN">1531-0361</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2012-12">2012-12</date><biblScope unit="volume">61</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="645">645</biblScope><biblScope unit="page" to="656">656</biblScope></imprint><idno type="ISSN">1531-0353</idno></series><idno type="istex">FC4AC0A2D5CB6060B068A09E55F15914C354E550</idno><idno type="DOI">10.1002/ird.1670</idno><idno type="ArticleID">IRD1670</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1531-0353</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Improvement in irrigation techniques has led to an expansion of the irrigated olive area in Tunisia and consequently a rise in agricultural water consumption. Here, the actual water use of Olea europaea L. ‘Meski’ as estimated by thermal dissipation probe measurements was compared for different irrigation regimes: three plots with irrigation doses based on Penman–Monteith crop evapotranspiration (ETc), 0.33 × ETc and the local grower's experience (about 0.6 × ETc), respectively. The scaling up of sap flux densities proved to be difficult given the azimuthal and radial sap flux density variability and the conductive surface area asymmetry. Moreover, natural thermal gradients may lead to inaccurate use of standard sap flow formulas. Depending on the manner of upscaling, differences in water use of more than 50 l day‐1 per tree were obtained (up to 0.7 × ETc irrigation dose). Despite these difficulties, sap flow calculations seem crucial to accurately determine the water needs of the orchard under investigation, as they corresponded closely to the lowest irrigation dose which was considered sufficiently high as no significant differences in drought stress variables were detected between the plots. Therefore, irrigation based solely on ETc leads to wasting of water; hence, careful application of both meteorological and sap flow methods is desirable in irrigation scheduling. Copyright © 2012 John Wiley & Sons, Ltd.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Bois/explor/CheneBelgiqueV2/Data/Main/Merge
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000322 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Merge/biblio.hfd -nk 000322 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Bois
|area= CheneBelgiqueV2
|flux= Main
|étape= Merge
|type= RBID
|clé= ISTEX:FC4AC0A2D5CB6060B068A09E55F15914C354E550
|texte= THE IMPORTANCE OF SAP FLOW MEASUREMENTS TO ESTIMATE ACTUAL WATER USE OF MESKI OLIVE TREES UNDER DIFFERENT IRRIGATION REGIMES IN TUNISIA
}}
| This area was generated with Dilib version V0.6.27. |  |