Livelihood and climate trade-offs in Kenyan peri-urban vegetable production

dc.bibliographicCitation.date2018
dc.bibliographicCitation.firstPage79
dc.bibliographicCitation.journalTitleAgricultural Systemseng
dc.bibliographicCitation.lastPage86
dc.bibliographicCitation.volume160
dc.contributor.authorKurgat, Barnabas K.
dc.contributor.authorStöber, Silke
dc.contributor.authorMwonga, Samuel
dc.contributor.authorLotze-Campen, Hermann
dc.contributor.authorRosenstock, Todd S.
dc.date.accessioned2023-01-16T13:46:07Z
dc.date.available2023-01-16T13:46:07Z
dc.date.issued2017
dc.description.abstractTrade-offs between livelihood and environmental outcomes due to agricultural intensification in sub-Saharan Africa are uncertain. The present study measured yield, economic performance and nitrous oxide (N2O) emissions in African indigenous vegetable (AIV) production to investigate the optimal nutrient management strategies. In order to achieve this, an on-farm experiment with four treatments – (1) 40 kg N/ha diammonium phosphate (DAP), (2) 10 t/ha cattle manure, (3) 20 kg N/ha DAP and 5 t/ha cattle manure and (4) a no-N input control – was performed for two seasons. Yields and N2O emissions were directly measured with subsampling and static chambers/gas chromatography, respectively. Economic outcomes were estimated from semi-structured interviews (N = 12). Trade-offs were quantified by calculating N2O emissions intensity (N2OI) and N2O emissions economic intensity (N2OEI). The results indicate that, DAP alone resulted at least 14% greater yields, gross margin and returns to labour in absolute terms but had the highest emissions (p = 0.003). Productivity-climate trade-offs, expressed as N2OI, were statistically similar for DAP and mixed treatments. However, N2OEI was minimized under mixed management (p = 0.0004) while maintaining productivity and gross margins. We therefore conclude that soil fertility management strategies that mix inorganic and organic source present a pathway to sustainable intensification in AIV production. Future studies of GHG emissions in crop production need to consider not only productivity but economic performance when considering trade-offs.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/10868
dc.identifier.urihttp://dx.doi.org/10.34657/9894
dc.language.isoeng
dc.publisherAmsterdam [u.a.] : Elsevier
dc.relation.doihttps://doi.org/10.1016/j.agsy.2017.10.003
dc.relation.essn0308-521X
dc.rights.licenseCC BY-NC-ND 4.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc630
dc.subject.ddc640
dc.subject.otherAfrican indigenous vegetableseng
dc.subject.otherKenyaeng
dc.subject.otherNitrous oxide emissioneng
dc.subject.otherNitrous oxide emission intensityeng
dc.subject.otherSoil fertilityeng
dc.titleLivelihood and climate trade-offs in Kenyan peri-urban vegetable productioneng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccess
wgl.contributorPIK
wgl.subjectBiowissenschaften/Biologieger
wgl.typeZeitschriftenartikelger
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