Water-use efficiency and transpiration efficiency of wheat under rain-fed conditions and supplemental irrigation in a Mediterranean-type environment

cg.contactheping.zhang@per.clw.csiro.auen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.creator.idOweis, Theib: 0000-0002-2003-4852en_US
cg.date.embargo-end-dateTimelessen_US
cg.identifier.doihttps://dx.doi.org/10.1023/A:1004328004860en_US
cg.isijournalISI Journalen_US
cg.issn0032-079Xen_US
cg.issn1573-5036en_US
cg.journalPlant and Soilen_US
cg.subject.agrovocnitrogenen_US
cg.subject.agrovocwater useen_US
cg.subject.agrovoctranspirationen_US
cg.volume201en_US
dc.contributorOweis, Theiben_US
dc.contributorGarabet, S.en_US
dc.creatorZhang, Hepingen_US
dc.date.accessioned2021-07-16T21:35:30Z
dc.date.available2021-07-16T21:35:30Z
dc.description.abstractGrowth and water use were measured in wheat (Triticum aestivum L.) grown in northern Syria in a typical Mediterranean climate over five seasons 1991/92-1995/96. Water use was partitioned into transpiration (T) and soil evaporation (E-s) using Ritchie's model, and water-use efficiency (WUE) and transpiration efficiency (TE) were calculated. The aim of the study was to examine the influence of irrigation and nitrogen on water use, WUE and TE. By addition of 100 kg N ha(-1), E-s was reduced from 120 mm to 101 mm under rain-fed conditions and from 143 mm to 110 mm under irrigated conditions, and T was increased from 153 mm to 193 mm under rain-fed conditions and from 215 mm to 310 mm under irrigated conditions. Under rain-fed conditions, about 35% of evapotranspiration (ET) may be lost from the soil surface for the fertilized crops and 44% of ET for the unfertilized crops. Transpiration accounted for 65% of ET for the fertilized crops and 56% for the unfertilized crops under rain-fed. As a result of this, WUE was increased by 44% for dry matter and 29% for grain yield under rain-fed conditions, and by 60% for dry matter and 57% for grain yield under irrigated conditions. Transpiration efficiency for the fertilized crops was 43.8 kg ha(-1) mm(-1) for dry matter and 15 kg ha(-1) mm(-1) for grain yield, while TE for the unfertilized crops was 33.6 kg ha(-1) mm(-1) and 12.2 kg ha(-1) mm(-1) for dry matter and grain yield, respectively. Supplemental irrigation significantly increased post-anthesis water use, transpiration, dry matter and grain yield. Water-use efficiency for grain yield was increased from 9.7 to 11.0 kg ha(-1) mm(-1) by supplemental irrigation, although WUE for dry matter was not affected by it. Irrigation did not affect transpiration efficiency for grain yield, but decreased transpiration efficiency for dry matter by 16%. This was associated with higher harvest index as a result of good water supply in the post-anthesis period and increased transpiration under irrigated conditions.en_US
dc.formatPDFen_US
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationHeping Zhang, Theib Oweis, S. Garabet. (1/4/1998). Water-use efficiency and transpiration efficiency of wheat under rain-fed conditions and supplemental irrigation in a Mediterranean-type environment. Plant and Soil, 201, pp. 295-305.en_US
dc.identifier.statusTimeless limited accessen_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/13444
dc.languageenen_US
dc.publisherSpringer (part of Springer Nature)en_US
dc.sourcePlant and Soil;201,Pagination 295-305en_US
dc.subjectsoil evaporationen_US
dc.titleWater-use efficiency and transpiration efficiency of wheat under rain-fed conditions and supplemental irrigation in a Mediterranean-type environmenten_US
dc.typeJournal Articleen_US
dcterms.available1998-04-01en_US
dcterms.extent295-305en_US
dcterms.issued1998-04-01en_US
mel.impact-factor4.192en_US

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