Agricultural water use and management in arid and semiarid areas: Current situation and measures for improvement

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cg.coverage.countryEgypt
cg.coverage.countryIran
cg.coverage.countryIndia
cg.coverage.countryChina
cg.coverage.countryPakistan
cg.coverage.iso3166-alpha2EG
cg.coverage.iso3166-alpha2IR
cg.coverage.iso3166-alpha2IN
cg.coverage.iso3166-alpha2CN
cg.coverage.iso3166-alpha2PK
cg.coverage.regionNorthern Africa
cg.coverage.regionSouthern Asia
cg.coverage.regionEastern Asia
cg.coverage.subregionArab Countries
cg.issue2en
cg.volume45en
dc.contributor.authorDehghanisanij, H.en
dc.contributor.authorOweis, Theib Y.en
dc.contributor.authorQureshi, Asad Sarwaren
dc.date.accessioned2014-06-13T14:48:44Zen
dc.date.available2014-06-13T14:48:44Zen
dc.identifier.urihttps://hdl.handle.net/10568/40921
dc.titleAgricultural water use and management in arid and semiarid areas: Current situation and measures for improvementen
dcterms.abstractWater is rapidly becoming scarcer especially in arid and semiarid areas such as Central West Asia and North Africa Region (CWANA), while irrigated agriculture is critical for national and world food security in these regions. Due to huge gaps between crop demands and rainfall, most countries of these regions cannot have productive form of agriculture without assured irrigation supplies. Continues decrease in the surface water resources has put enormous pressure on groundwater resources and as a results; throughout the regions groundwater tables are declining. Since water is the most limited factor in these regions, improving the productivity of existing water resources is an attractive alternative to sustain irrigated agriculture. There is a strong need to educate farmers to shift their thinking from "maximizing crop yields? to " optimizing crop yields? . The results show that substantial and sustainable improvements in water productivity can be achieved through integrated farm-resources management. On-farm irrigation water management techniques such as deficit irrigation if coupled with better cropping patterns together with appropriate cultural practices, and improved genetic make-up will help to achieve this objective. Conventional water-management and cropping pattern guidelines, designed to maximize yield per unit area, need to be revised for achieving maximum water productivity. The wide ranges in recorded crop water productivities suggest that agricultural production can be maintained to its current level by using 20 to 40% less water if new water management practices are adopted. This paper reviews the current situation of water scarcity, agricultural water productivity, and suggests options for sustainable management of land and water resources in these regions.en
dcterms.accessRightsLimited Access
dcterms.bibliographicCitationDehghanisanij, H.; Oweis, T.; Qureshi, Asad Sarwar. 2006. Agricultural water use and management in arid and semiarid areas: Current situation and measures for improvement. Annals of Arid Zone, 45(2):1-24.en
dcterms.extentp. 1-24en
dcterms.issued2006
dcterms.languageen
dcterms.subjectwater deficiten
dcterms.subjectirrigated farmingen
dcterms.subjectwater use efficiencyen
dcterms.subjectirrigation efficiencyen
dcterms.subjectwater conservationen
dcterms.subjectprecipitationen
dcterms.subjectgroundwateren
dcterms.subjectevapotranspirationen
dcterms.subjectdrip irrigationen
dcterms.subjectfurrow irrigationen
dcterms.subjectsprinkler irrigationen
dcterms.subjectoptimizationen
dcterms.typeJournal Article

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