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Seed certification and maize, rice and cowpea productivity in Nigeria: an insight based on nationally representative farm household data and seed company location data

dc.contributor.authorTakeshima, H.
dc.contributor.authorAbdoulaye, T.
dc.contributor.authorAndam, K.S.
dc.contributor.authorEdeh, H.O.
dc.contributor.authorFasoranti, A.
dc.contributor.authorHaile, B.
dc.contributor.authorKumar, P.L.
dc.contributor.authorNwagboso, C.
dc.contributor.authorRagasa, C.
dc.contributor.authorSpielman, D.
dc.contributor.authorAssfaw Wossen, T.
dc.date.accessioned2023-06-19T11:19:33Z
dc.date.available2023-06-19T11:19:33Z
dc.date.issued2022-12
dc.identifier.citationTakeshima, H., Abdoulaye, T., Andam, K., Edeh, H., Fasoranti, A., Haile, B., ... & Assfaw Wossen, T. (2022). Seed certification and maize, rice and cowpea productivity in Nigeria: An insight based on nationally representative farm household data and seed company location data. Washington, DC, USA: IFPRI. (39 p.).
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8207
dc.description.abstractDespite the potential importance of seed quality to agricultural productivity growth, many governments in sub-Saharan Africa lack the capacity to expand quality assurance systems even where there is expressed interest. This study aims to evidence the value of quality assurance systems with an analysis of efforts to produce and distribute certified seed in Nigeria. We assess the associations between quantities of certified seeds produced and spatial variations in production locations proxied by headquarter locations of seed companies producing certified seeds, on the one hand, with spatial variations in the use of certified seed, yields, and output at the farm level, on the other hand. Our analysis covers three crops that are important to food security in Nigeria: maize, rice, and cowpea. Our analysis integrates information on seed quantities produced and locations of seed companies with nationally representative panel data from a survey of farm households and spatially explicit rainfall and temperature data. We find a positive relationship between certified seed production in proximity to farm households and farm-level use of certified seeds, yields, and output, although this effect is diminishing at the margin. These diminishing marginal effects may be partly due to two factors. First, the yield gains from certified seeds tend to vary considerably within each state, suggesting that either quality issues persist in the seed supply chain or farmers are not using complementary inputs or appropriate management techniques when using quality seed. Second, it may be that as certified seed becomes more available to farmers, its use spreads from higher-return farms to lower-return farms, thereby diminishing the gains on the extensive margin. Although more rigorous assessments of causal effects and cost-effectiveness are needed to validate these findings, these results are consistent with the hypothesis that there are diminishing returns to seed quality assurance. Policymakers, regulators, and seed providers may benefit from identifying optimal, crop-specific target quantities or rates for certified seed production rather than aiming for certification of all seed produced in a market.
dc.description.sponsorshipCGIAR Trust Fund
dc.format.extent39 p.
dc.language.isoen
dc.publisherInternational Food Policy Research Institute
dc.relation.ispartofseriesIFPRI discussion paper 02147;
dc.subjectSeed Quality
dc.subjectAgriculture
dc.subjectAgricultural Products
dc.subjectAgricultural Productivity
dc.subjectCapacity Development
dc.subjectQuality Assurance
dc.subjectAnalysis
dc.subjectCertified Seed
dc.subjectSeed
dc.subjectProduction
dc.subjectYields
dc.subjectInput Output Analysis
dc.subjectInputs
dc.subjectMaize
dc.subjectRice
dc.subjectCowpeas
dc.subjectQuantity Controls
dc.subjectHouseholds
dc.subjectRain
dc.subjectRainfall Patterns
dc.subjectPrecipitation
dc.subjectTemperature Data
dc.subjectGeography
dc.subjectMarginal Analysis
dc.subjectCost Effectiveness Analysis
dc.subjectGovernment Policy
dc.subjectPolicy Innovation
dc.titleSeed certification and maize, rice and cowpea productivity in Nigeria: an insight based on nationally representative farm household data and seed company location data
dc.typeBook
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.crpPolicies, Institutions and Markets
cg.contributor.affiliationInternational Food Policy Research Institute
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemePlant Production and Health
cg.identifier.urlhttps://www.ifpri.org/publication/seed-certification-and-maize-rice-and-cowpea-productivity-nigeria-insight-based
cg.identifier.bibtexciteidTAKESHIMA:2022
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectAgronomy
cg.iitasubjectCowpea
cg.iitasubjectCrop Systems
cg.iitasubjectFood Security
cg.iitasubjectGrain Legumes
cg.iitasubjectLivelihoods
cg.iitasubjectMaize
cg.iitasubjectMarkets
cg.iitasubjectPlant Production
cg.iitasubjectSmallholder Farmers
cg.iitasubjectValue Chains
cg.publicationplaceWashington, DC, USA
cg.accessibilitystatusOpen Access
cg.reviewstatusInternal Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.2499/p15738coll2.136474
cg.iitaauthor.identifierTahirou Abdoulaye: 0000-0002-8072-1363
cg.iitaauthor.identifierP. Lava Kumar: 0000-0003-4388-6510
cg.iitaauthor.identifierTesfamicheal Wossen Assfaw: 0000-0002-3672-2676
cg.futureupdate.requiredNo


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