How big is the potato (Solanum tuberosum L.) yield gap in Sub-Saharan Africa and why? A participatory approach

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cg.authorship.typesCGIAR single centreen
cg.contributor.affiliationInternational Potato Centeren
cg.contributor.affiliationUnited States Department of Agricultureen
cg.contributor.affiliationInstitut des Sciences Agronomiques du Burundien
cg.contributor.affiliationKachwekano Zonal Agricultural Research and Development Institute, Ugandaen
cg.contributor.affiliationNational Root Crops Research Institute, Nigeriaen
cg.contributor.affiliationInstituto de Investigação Agrária de Moçambiqueen
cg.contributor.affiliationInstitut National pour l'Étude et la Recherche Agronomiques, Democratic Republic of Congoen
cg.contributor.affiliationKenya Agricultural and Livestock Research Organizationen
cg.contributor.affiliationFIFAMANOR, Madagascaren
cg.contributor.affiliationUniversité de Dschangen
cg.contributor.affiliationEthiopian Institute of Agricultural Researchen
cg.contributor.affiliationUniversidad Nacional Agraria, Peruen
cg.contributor.crpClimate Change, Agriculture and Food Security
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.crpIntegrated Systems for the Humid Tropics
cg.coverage.regionAfrica
cg.creator.identifierRoberto Quiroz: 0000-0001-8401-2700
cg.creator.identifierCarolina Barreda: 0000-0002-2412-7343
cg.creator.identifierDieudonné Harahagazwe: 0000-0002-1337-1041
cg.creator.identifierElmar Schulte-Geldermann: 0000-0003-1784-4333
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1515/opag-2018-0019en
cg.isijournalISI Journalen
cg.issn2391-9531en
cg.issue2en
cg.journalOpen Agricultureen
cg.reviewStatusPeer Reviewen
cg.subject.cipPOTATO AGRI-FOOD SYSTEMSen
cg.subject.cipPOTATOESen
cg.subject.cipCROP AND SYSTEMS SCIENCES CSSen
cg.volume3en
dc.contributor.authorHarahagazwe, D.en
dc.contributor.authorCondori, B.en
dc.contributor.authorBarreda, C.en
dc.contributor.authorBararyenya, A.en
dc.contributor.authorByarugaba, A.A.en
dc.contributor.authorKude, D.A.en
dc.contributor.authorLung'aho, C.en
dc.contributor.authorMartinho, C.en
dc.contributor.authorMbiri, D.en
dc.contributor.authorNasona, B.en
dc.contributor.authorOchieng, B.en
dc.contributor.authorOnditi, J.en
dc.contributor.authorRandrianaivoarivony, J.M.en
dc.contributor.authorTankou, C.M.en
dc.contributor.authorWorku, A.en
dc.contributor.authorSchulte-Geldermann, Elmaren
dc.contributor.authorMares, V.en
dc.contributor.authorMendiburu, F. deen
dc.contributor.authorQuiróz, R.en
dc.date.accessioned2018-07-11T14:33:41Zen
dc.date.available2018-07-11T14:33:41Zen
dc.identifier.urihttps://hdl.handle.net/10568/96110
dc.titleHow big is the potato (Solanum tuberosum L.) yield gap in Sub-Saharan Africa and why? A participatory approachen
dcterms.abstractAccording to potato experts from ten Sub-Saharan Africa (SSA) countries working together in a community of practice (CoP) over a 3-years period, potato farmers across SSA can increase their current annual production of 10.8 million metric tons by 140% if they had access to high quality seed along with improved management practices. This paper describes this innovative new methodology tested on potato for the first time, combining modelling and a comprehensive online survey through a CoP. The intent was to overcome the paucity of experimental information required for crop modelling. Researchers, whose data contributed to estimating model parameters, participated in the study using Solanum, a crop model developed by the International Potato Center (CIP). The first finding was that model parameters estimated through participatory modelling using experts’ knowledge were good approximations of those obtained experimentally. The estimated yield gap was 58 Mg ha-1, of which 35 corresponded to a research gap (potential yield minus research yield) and 24 to farmers’ gap (research yield minus farmer’s yield). Over a 6-month period, SurveyMonkey, a Web-based platform was used to assess yield gap drivers. The survey revealed that poor quality seed and bacterial wilt were the main yield gap drivers as perceived by survey respondents.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.audienceAcademicsen
dcterms.available2018-07-11
dcterms.bibliographicCitationHarahagazwe, D.; Condori, B.; Barreda, C.; Bararyenya, A.; Byarugaba, A.A.; Kude, D.A.; Lung'aho, C.; Martinho, C.; Mbiri, D.; Nasona, B.; Ochieng, B.; Onditi, J.; Randrianaivoarivony, J.M.; Tankou, C.M.; Worku, A.; Schulte-Geldermann, E.; Mares, V. (CIP); Mendiburu, F. de.; Quiroz, R. (CIP). 2018. How big is the potato (Solanum tuberosum L.) yield gap in Sub-Saharan Africa and why? A participatory approach.Journal Article Open Agriculture. (Poland). ISSN 2391-9531. 3(2):180-189.en
dcterms.extent180-189en
dcterms.issued2018-07-01
dcterms.languageen
dcterms.licenseCC-BY-NC-ND-4.0
dcterms.publisherWalter de Gruyter GmbHen
dcterms.subjectpotatoesen
dcterms.subjectyield gapen
dcterms.subjectparticipatory rural appraisalen
dcterms.subjectcommunity organizationsen
dcterms.subjectcrop modellingen
dcterms.typeJournal Article

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