Analysis of cotton water productivity in Fergana Valley of Central Asia

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cg.contributor.crpWater, Land and Ecosystems
cg.coverage.countryUzbekistan
cg.coverage.countryTajikistan
cg.coverage.iso3166-alpha2UZ
cg.coverage.iso3166-alpha2TJ
cg.coverage.regionAsia
cg.coverage.regionCentral Asia
cg.identifier.doihttps://doi.org/10.4236/as.2012.36100en
cg.identifier.urlhttp://www.scirp.org/journal/PaperInformation.aspx?paperID=23403en
cg.identifier.wlethemeLand and Water Productivity
cg.identifier.wlethemeManaging Resource Variability and Competing Use
cg.issn2156-8553en
cg.issn2156-8561en
cg.issue6en
cg.journalAgricultural Sciencesen
cg.subject.wleWATER PRODUCTIVITYen
cg.subject.wleAGRICULTURAL WATER MANAGEMENTen
cg.subject.wleIRRIGATIONen
cg.subject.wleENERGYen
cg.volume3en
dc.contributor.authorReddy, J.M.en
dc.contributor.authorMuhammedjanov, S.en
dc.contributor.authorJumaboev, Kahramonen
dc.contributor.authorEshmuratov, Davronen
dc.date.accessioned2013-11-21T05:04:46Zen
dc.date.accessioned2014-02-02T16:39:50Zen
dc.date.available2013-11-21T05:04:46Zen
dc.date.available2014-02-02T16:39:50Zen
dc.identifier.urihttps://hdl.handle.net/10568/34578
dc.titleAnalysis of cotton water productivity in Fergana Valley of Central Asiaen
dcterms.abstractCotton water productivity was studied in Fergana Valley of Central Asia during the years of 2009, 2010 and 2011. Data was collected from 18 demonstration fields (13 in Uzbekistan, 5 in Tajikistan). The demonstration field farmers implemented several improved agronomic and irrigation water management practices. The average values of crop yield, estimated crop consumptive use (ETa) and total water applied (TWA) for the demonstration sites were, respectively, 3700 kg/ha, 6360 m3/ha, and 8120 m3/ha. The range of values for TWA and ETa were, respectively, 5000 m3/ha to 12,000 m3/ha and 4500 m3/ha to 8000 m3/ha. A quadratic relationship was found between TWA and ETa. The average yield of the adjacent fields was 3300 kg/ha, whereas the average yield of cotton in Fergana Valley as a whole was 2900 kg/ha, indicating 28% and 14% increase in crop yield, respectively, from, demonstration fields and adjacent fields. There was no significant difference in crop yields between the wet years (2009 and 2010) and the dry year (2011), which is explained by the quadratic relationship between TWA and ETa. The water productivity values ranged from 0.35 kg/m3 to 0.89 kg/m3, indicating a significant potential for improving water productivity through agronomic and irrigation management interventions. The ratio of average ETa divided by average TWA gave an average application efficiency of 78% (some fields under-irrigated and some fields over-irrigated), the remaining 22% of water applied leaving the field. Since more than 60% of the water used for irrigation in Tajikistan and Uzbekistan is pumped from, even if all this 22% of water returns to the stream, substantial energy savings would accrue from improving the average application efficiency at field level. The range of values for TWA indicates the inequity in water distribution/accessibility. Addressing this inequity would also increase water productivity at field and project level.en
dcterms.accessRightsOpen Access
dcterms.bibliographicCitationReddy, Junna Mohan; Muhammedjanov, S.; Jumaboev, Kakhramon; Eshmuratov, Davron. 2012. Analysis of cotton water productivity in Fergana Valley of Central Asia. Agricultural Sciences, 3(6):822-834.en
dcterms.extentp. 822-834en
dcterms.issued2012
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherScientific Research Publishing, Inc.en
dcterms.subjectgossypiumen
dcterms.subjectfarmersen
dcterms.subjectagricultural demonstrationen
dcterms.subjectpilot farmsen
dcterms.subjectfurrow irrigationen
dcterms.subjectirrigation wateren
dcterms.subjectwater managementen
dcterms.subjectagronomic practicesen
dcterms.subjectcrop yielden
dcterms.typeJournal Article

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