Direct and spillover effects of biofortified sweetpotato interventions on sustained adoption in Malawi

Simple item page
cg.authorship.typesCGIAR and developing country instituteen
cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInternational Potato Centeren
cg.contributor.affiliationLilongwe University of Agriculture and Natural Resourcesen
cg.contributor.donorForeign, Commonwealth and Development Office, United Kingdomen
cg.contributor.donorCGIAR Trust Funden
cg.contributor.initiativeSeed Equal
cg.coverage.countryMalawi
cg.coverage.iso3166-alpha2MW
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierMarcel Gatto: 0000-0002-0108-3296en
cg.creator.identifierWisdom Mgomezulu: 0000-0001-6491-4088en
cg.creator.identifierJulius Juma Okello: 0000-0003-2217-2770en
cg.creator.identifierWilly Pradel: 0000-0002-2240-1468en
cg.creator.identifiernorman kwikiriza: 0000-0003-1103-812Xen
cg.creator.identifierGuy Gaston HAREAU ALGORTA: 0000-0002-8458-9259en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1016/j.foodpol.2023.102552en
cg.isijournalISI Journalen
cg.issn1873-5657en
cg.journalFood Policyen
cg.reviewStatusPeer Reviewen
cg.subject.cipBIOFORTIFICATIONen
cg.subject.cipSWEETPOTATOESen
cg.subject.cipSWEETPOTATO AGRI-FOOD SYSTEMSen
cg.volume121en
dc.contributor.authorGatto, M.en
dc.contributor.authorMgomezulu, W.R.en
dc.contributor.authorOkello, J.J.en
dc.contributor.authorPradel, W.en
dc.contributor.authorKwikiriza, N.en
dc.contributor.authorHareau, G.en
dc.date.accessioned2023-11-14T13:36:23Zen
dc.date.available2023-11-14T13:36:23Zen
dc.identifier.urihttps://hdl.handle.net/10568/134487
dc.titleDirect and spillover effects of biofortified sweetpotato interventions on sustained adoption in Malawien
dcterms.abstractAgriculture-nutrition interventions (ANI) have recently received attention as a promising delivery mechanism for achieving desirable nutritional outcomes. However, more evidence is needed on the effectiveness of such interventions. In this study, we analyze direct and spillover effects of ANIs for biofortified orange-fleshed sweetpotato (OFSP) in Malawi on sustained household outcomes: OFSP adoption, area planted, harvest, and sales. In Malawi, we selected three large-scale OFSP interventions and use a rich dataset of 2,492 smallholder farmers selected from every district of Malawi. Methodologically, we employ bivariate probit, instrumental variables, and propensity score matching techniques. We find positive and sustained participation effects for all outcomes. Second, we find that OFSP interventions spilled over and benefited non-participants who lived in treatment villages. Vine multipliers and vine conservation techniques were key diffusion mechanisms for initial and sustained adoption of OFSP varieties. Interventions promoted higher OFSP root sales which suggests that generating income is an important motivator of adoption, in addition to own-consumption. Also, root sales is an often overlooked diffusion mechanism to reach additional farmers beyond the direct participants. Relevant for policy-makers is that OFSP interventions have sustained positive adoption and diffusion effects, and thus feature well as a relatively cost-effective food-based approach among other strategies to eradicate hidden hunger. Designing ANIs with strong supply-push (e.g., (de)centralized vine multipliers, vine conservation techniques) and demand-pull components (e.g., participatory varietal selection and agronomic training) are key and will need to be accompanied by strategies that create a stronger economic case for OFSP, for instance, by investments to strengthen a processing industry for OFSP roots.en
dcterms.accessRightsOpen Access
dcterms.audienceAcademicsen
dcterms.audienceCGIARen
dcterms.audienceDevelopment Practitionersen
dcterms.audienceDonorsen
dcterms.audienceExtensionen
dcterms.audienceFarmersen
dcterms.audienceGeneral Publicen
dcterms.audienceNGOsen
dcterms.audiencePolicy Makersen
dcterms.audienceScientistsen
dcterms.available2023-11-09en
dcterms.bibliographicCitationGatto, M.; Mgomezulu, W.R.; Okello, J.J.; Pradel, W.; Kwikiriza, N.; Hareau, G. 2023. Direct and spillover effects of biofortified sweetpotato interventions on sustained adoption in Malawi. Food Policy, 121. ISSN 1873-5657. 14 p.en
dcterms.extent14 p.en
dcterms.issued2023-11-09en
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherElsevieren
dcterms.subjectsweet potatoesen
dcterms.subjectfoodsen
dcterms.subjectbiofortificationen
dcterms.typeJournal Article

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIP Journal Articles
CGIAR Initiative on Seed Equal
Development and delivery of biofortified crops at scale