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Exploiting Cropping Management to Improve Agricultural Water Use Efficiency in the Drylands of Eastern Uganda

Exploiting Cropping Management to Improve Agricultural Water Use Efficiency in the Drylands of Eastern Uganda

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dc.contributor.author Robert Mulebeke
dc.contributor.author Geoffrey Kironchi
dc.contributor.author Moses Tenywa
dc.date.accessioned 2021-01-10T11:55:40Z
dc.date.available 2021-01-10T11:55:40Z
dc.date.issued 2015
dc.identifier.issn 1927050x
dc.identifier.issn 19270518
dc.identifier.uri https://combine.alvar.ug/handle/1/49074
dc.description.abstract A remarkable challenge lies in maximizing agricultural water productivity, particularly in the drought prone regions of sub Saharan Africa. It is hypothesized that water use efficiency (WUE) can be increased by selection of appropriate cropping management systems. This study seeks to establish the effects of cropping management on water use efficiency in cassava-sorghum cropping systems in the drylands of eastern Uganda. A randomised complete block design (RCBD) consisting of six treatments: sole cassava, sole sorghum, sole cowpea, cassava + sorghum, cassava + cowpea, and sorghum + cowpea, replicated three times were used. Two tillage practices; mouldboard ploughing (Mb) and, ripping (Rp) were used to assess the effect of tillage. WUE (kg ha-1 mm-1) was calculated as a ratio of yield (kg ha-1) to evapotranspiration (ET) (mm). ET was estimated using the soil water balance. WUE varied significantly (?= 0.05) between cropping systems with the highest observed in cassava (34.38 kg ha-1 mm-1) while the lowest was 3.76 kg ha-1 mm-1 for sorghum. WUE did not differ appreciably in both Mb and Rp tillage practices. Farmers growing sole cassava could use either of the tillage practices. The best yield was recorded in cassava + cowpea cropping system under Mb ploughing and sole sorghum under Rp gave the poorest combined yield (1,676 kg ha-1).
dc.publisher Canadian Center of Science and Education
dc.relation.ispartof Sustainable Agriculture Research
dc.title Exploiting Cropping Management to Improve Agricultural Water Use Efficiency in the Drylands of Eastern Uganda
dc.type journal article
dc.identifier.doi 10.5539/sar.v4n2p57
dc.identifier.mag 2036630365
dc.identifier.lens 033-351-725-148-988
dc.identifier.volume 4
dc.identifier.issue 2
dc.identifier.spage 57
dc.identifier.epage 69
dc.subject.lens-fields Crop yield
dc.subject.lens-fields Cropping
dc.subject.lens-fields Tillage
dc.subject.lens-fields Plough
dc.subject.lens-fields Water-use efficiency
dc.subject.lens-fields Cropping system
dc.subject.lens-fields Sorghum
dc.subject.lens-fields Sweet sorghum
dc.subject.lens-fields Mathematics
dc.subject.lens-fields Agronomy


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