Heat units-based potential yield assessment for cotton production in Uzbekistan

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cg.contributor.crpDryland Systemsen_US
cg.coverage.countryUzbekistanen_US
cg.coverage.iso3166-alpha2UZen_US
cg.coverage.regionCentral Asiaen_US
cg.identifier.doihttps://doi.org/10.25165/j.ijabe.20211406.4803en_US
cg.identifier.iwmilibraryH050907en_US
cg.identifier.urlhttps://ijabe.org/index.php/ijabe/article/download/4803/pdfen_US
cg.isijournalISI Journalen_US
cg.issn1934-6344en_US
cg.issue6en_US
cg.journalInternational Journal of Agricultural and Biological Engineeringen_US
cg.reviewStatusPeer Reviewen_US
cg.volume14en_US
dc.contributor.authorMontanaro, G.en_US
dc.contributor.authorNangia, V.en_US
dc.contributor.authorGowda, P.en_US
dc.contributor.authorMukhamedjanov, S.en_US
dc.contributor.authorMukhamedjanov, A.en_US
dc.contributor.authorHaddad, M.en_US
dc.contributor.authorYuldashev, Tulkunen_US
dc.contributor.authorWu, W.en_US
dc.date.accessioned2022-01-31T23:56:41Zen_US
dc.date.available2022-01-31T23:56:41Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/117862en_US
dc.titleHeat units-based potential yield assessment for cotton production in Uzbekistanen_US
dcterms.abstractCotton yields in Uzbekistan are significantly lower than those in similar agro-climatic regions, requiring the estimation of crop potential and baseline yield to track progress of production enhancement efforts. The current study estimated potential cotton development and baseline yield (maximum given no production constraints) using total heat units (THU) and potential cotton yield (PCY), respectively. Calculations were based on heat units (HU) for a 30-year (1984-2013) period. Long-term average THU and PCY, as well as PCY at three different exceedance probabilities (p=0.99, p=0.80, and p=0.75), were calculated for 21 selected weather stations across cotton-growing areas of Uzbekistan. After confirmation that the current planting date (April 15) is optimal, a comparison of THU with the accepted cotton production cutoff threshold (1444°C) suggested that areas with lower elevations and latitudes are more appropriate for cotton production. Yield gap analysis (relative difference between long-term average PCY and actual yields) confirmed that Uzbekistan cotton production is below potential, while the spatial distribution of yield gaps outlined where efforts should be targeted. Areas near the stations of Nukus, Kungrad, Chimbay, and Syrdarya should be further investigated as benefit/cost ratio is highest in these areas. A comparison between state-set yield targets and PCY values, taking into account climatic variability, suggested that all areas except Jaslyk, Nurata, and Samarkand have safe, appropriate targets. These results present a starting-point to aid in strategic actions for Uzbekistan cotton production improvement.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.bibliographicCitationMontanaro, G.; Nangia, V.; Gowda, P.; Mukhamedjanov, S.; Mukhamedjanov, A.; Haddad, M.; Yuldashev, Tulkun; Wu, W. 2021. Heat units-based potential yield assessment for cotton production in Uzbekistan. International Journal of Agricultural and Biological Engineering, 14(6):137-144. [doi: https://doi.org/10.25165/j.ijabe.20211406.4803]en_US
dcterms.extent137-144en_US
dcterms.issued2021en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-4.0en_US
dcterms.publisherInternational Journal of Agricultural and Biological Engineering (IJABE)en_US
dcterms.subjectcottonen_US
dcterms.subjectcrop yielden_US
dcterms.subjectyield gapen_US
dcterms.subjectyield potentialen_US
dcterms.subjectassessmenten_US
dcterms.subjectheat unitsen_US
dcterms.subjectclimate variabilityen_US
dcterms.typeJournal Articleen_US

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