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dc.contributorPala, Mustafaen_US
dc.contributorBenli, Bogachanen_US
dc.contributorTavakoli, Ali Rezaen_US
dc.contributorIlbeyi, Ademen_US
dc.creatorOweis, Theiben_US
dc.identifier.citationTheib Oweis, Mustafa Pala, Bogachan Benli, Ali Reza Tavakoli, Adem Ilbeyi. (6/9/2005). The Role of Early Sowing with Supplemental Irrigation in Cool Highland Environments. Bari, Italy.en_US
dc.description.abstractThe per capita wheat consumption in the Central and West Asia and North Africa (CWANA) region is the highest in the world. Therefore, the crop occupies a major share of arable land annually in the region-as much as 70% of the land in Turkey and Iran. However, wheat yields are low and variable mainly as a result of inadequate and erratic seasonal rainfall and associated management factors, such as late sowing. ICARDA has conducted two experiments in the highlands of Iran and Turkey, in order to determine the impact of early sowing and supplementary irrigation (51) on rainfed wheat production. Treatments included early sowing with 50 mm irrigation and normal sowing with no irrigation and four spring (51) levels (rainfed, 1/3, 2/3 and full 51). Results indicate that, when early rain was inadequate for crop germination, 51, given at sowing substantially increased wheat yields. Early sowing with 51 allowed early crop emergence and development of good stand before being subjected to the winter frost. Additional supplemental irrigation in the spring also increased yield significantly but involved a lower rate of water productivity. The reduction in grain yield with deficit irrigation of 2/3 and 1/3 of full irrigation was 3% and 5% below maximum levels respectively for Turkish highlands. Also maximum WUE has achieved with 1/3 of full 51 for Iranian highlands. Thus, when limited 51 is combined with appropriate management, wheat production can be substantially and consistently increased in cool highlands.en_US
dc.publisherCentre International de Hautes Etudes Agronomiques Méditerranéennes, Istituto Agronomico Mediterraneo Bari (CIHEAM-IAMB)en_US
dc.subjectrainfed agricultureen_US
dc.subjectearly sowingen_US
dc.titleThe Role of Early Sowing with Supplemental Irrigation in Cool Highland Environmentsen_US
dc.typeConference Paperen_US
cg.creator.idOweis, Theib: 0000-0002-2003-4852en_US
cg.subject.agrovocsupplemental irrigationen_US
cg.subject.agrovocdeficit irrigationen_US
cg.subject.agrovocwater productivityen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerAgricultural Research Center of Semnan Province - ARC Iranen_US
cg.contributor.centerAnkara Research Institute of Rural Services**en_US
cg.contributor.crpCGIAR Research Program on Water, Land and Ecosystems - WLEen_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.coverage.regionWestern Asiaen_US
dc.identifier.statusOpen accessen_US

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