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dc.contributor.authorSwamila, M.
dc.contributor.authorPhilip, D.
dc.contributor.authorAkyoo, A.M.
dc.contributor.authorManda, J.
dc.contributor.authorMwinuka, L.
dc.contributor.authorSmethurst, P.
dc.contributor.authorSieber, S.
dc.contributor.authorKimaro, A.A.
dc.date.accessioned2022-05-23T13:42:45Z
dc.date.available2022-05-23T13:42:45Z
dc.date.issued2022
dc.identifier.citationSwamila, M., Philip, D., Akyoo, A.M., Manda, J., Mwinuka, L., Smethurst, P., ... & Kimaro, A.A. (2022). Profitability of Gliricidia-maize system in selected dryland areas of Dodoma region, Tanzania. Sustainability, 14(1), 1-13.
dc.identifier.issn2071-1050
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7477
dc.description.abstractDeclining soil fertility and climatic extremes are among major problems for agricultural production in most dryland agro-ecologies of sub-Saharan Africa. In response, the agroforestry technology intercropping of Gliricidia (Gliricidia sepium (Jacq.)) and Maize (Zea mays L.) was developed to complement conventional soil fertility management technologies. However, diversified information on the profitability of Gliricidia-Maize intercropping system in dryland areas is scanty. Using data from the Gliricidia and maize models of the Next Generation version of the Agriculture Production Systems sIMulator (APSIM), this study estimates the profitability of the Gliricidia-Maize system relative to an unfertilized sole maize system. Results show significant heterogeneity in profitability indicators both in absolute and relative economic terms. Aggregated over a 20-year cycle, Gliricidia-Maize intercropping exhibited a higher Net Present Value (NPV = Tsh 19,238,798.43) and Benefit Cost Ratio (BCR = 4.27) than the unfertilized sole maize system. The NPV and BCR of the latter were Tsh 10,934,669.90 and 3.59, respectively. Moreover, the returns to labour per person day in the Gliricidia-Maize system was 1.5 times those of the unfertilized sole maize system. Sensitivity analysis revealed that the profitability of the Gliricidia-Maize system is more negatively affected by the decrease in output prices than the increase in input prices. A 30% decrease in the former leads to a decrease in NPV and BCR by 38% and 30%, respectively. Despite the higher initial costs of the agroforestry establishment, the 30% increase in input prices affects more disproportionally unfertilized sole maize than the Gliricidia-Maize system in absolute economic terms, i.e., 11.1% versus 8.8% decrease in NPV. In relative economic terms, an equal magnitude of change in input prices exerts the same effect on the unfertilized sole maize and the Gliricidia-maize systems. This result implies that the monetary benefits accrued after the first year of agroforestry establishment offset the initial investment costs. The Gliricidia-Maize intercropping technology therefore is profitable with time, and it can contribute to increased household income and food security. Helping farmers to overcome initial investment costs and manage agroforestry technologies well to generate additional benefits is critical for the successful scaling of the Gliricidia-Maize intercropping technology in dryland areas of Dodoma, Tanzania.
dc.description.sponsorshipUnited States Agency for International Development
dc.description.sponsorshipUnited States Department of Agriculture
dc.description.sponsorshipGerman Academic Exchange Service
dc.format.extent1-13
dc.language.isoen
dc.subjectSoil Fertility
dc.subjectProfitability
dc.subjectGliricidia
dc.subjectDrylands
dc.subjectMaize
dc.titleProfitability of Gliricidia-maize system in selected dryland areas of Dodoma region, Tanzania
dc.typeJournal Article
cg.contributor.crpGrain Legumes
cg.contributor.crpPolicies, Institutions and Markets
cg.contributor.affiliationSokoine University of Agriculture
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationThe University of Dodoma
cg.contributor.affiliationRoskilde University
cg.contributor.affiliationCommonwealth Scientific and Industrial Research Organisation
cg.contributor.affiliationThe Leibniz Centre for Agricultural Landscape Research
cg.contributor.affiliationHumboldt-Universität zu Berlin
cg.contributor.affiliationWorld Agroforestry
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryTanzania
cg.coverage.hubEastern Africa Hub
cg.researchthemeSocial Science and Agribusiness
cg.identifier.bibtexciteidSWAMILA:2022
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectClimate Change
cg.iitasubjectFarming Systems
cg.iitasubjectMaize
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.iitasubjectSoil Fertility
cg.journalSustainability
cg.notesOpen Access Journal; Published online: 21 Dec 2021
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3390/su14010053
cg.iitaauthor.identifierJulius Manda: 0000-0002-9599-5906
cg.futureupdate.requiredNo
cg.identifier.issue1
cg.identifier.volume14


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