Improving rapid multiplication of sweetpotato (Ipomoea batatas L. (Lam)) pre-basic seed using sandponics technology in East Africa

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cg.authorship.typesCGIAR single centreen
cg.contributor.affiliationInternational Potato Centeren
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.donorBill & Melinda Gates Foundationen
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierBramwel Waswa Wanjala: 0000-0002-4732-1691
cg.creator.identifierS.Rajendran: 0000-0003-2769-2548
cg.creator.identifierPhabian Makokha: 0000-0002-6575-0406
cg.creator.identifierReuben SSALI Tendo: 0000-0002-8143-6564
cg.creator.identifierJan Kreuze: 0000-0002-6116-9200
cg.creator.identifierJan Low: 0000-0001-8170-6045
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1017/s0014479719000413en
cg.isijournalISI Journalen
cg.issn1469-4441en
cg.issue3en
cg.journalExperimental Agricultureen
cg.reviewStatusPeer Reviewen
cg.subject.cipCROP PROTECTIONen
cg.subject.cipCROP AND SYSTEMS SCIENCES CSSen
cg.subject.cipSWEETPOTATOESen
cg.subject.cipSWEETPOTATO AGRI-FOOD SYSTEMSen
cg.volume56en
dc.contributor.authorWanjala, Bramwel W.en
dc.contributor.authorRajendran, S.en
dc.contributor.authorMakokha, P.en
dc.contributor.authorSsali, R.T.en
dc.contributor.authorMcEwan, M.en
dc.contributor.authorKreuze, Jan F.en
dc.contributor.authorLow, Jan W.en
dc.date.accessioned2020-06-05T00:27:09Zen
dc.date.available2020-06-05T00:27:09Zen
dc.identifier.urihttps://hdl.handle.net/10568/108388
dc.titleImproving rapid multiplication of sweetpotato (Ipomoea batatas L. (Lam)) pre-basic seed using sandponics technology in East Africaen
dcterms.abstractSweetpotato (Ipomoea batatas, Convolvulaceae) is an important food crop in Sub-Saharan Africa (SSA). Lack of access to quality sweetpotato planting material after sweetpotato limits utilization of market oriented improved clones and new varieties. Obtaining clean planting material in the right quantity and quality is a challenge in the SSA region. Farmers often obtain planting materials from their own sources with multiple rooting, drawn from a previous crop or neighbors and face the risk of it being infected with sweetpotato viruses. The objective of this study was to examine the economic and physical yield performance of sandponics multiplication method by comparing with conventional soil method using optimal N-nutrient inputs. The performance of five sweetpotato cultivars (Irene, Delvia, Tanzania, Gweri, and Kabode) in the modified prototype sweetpotato nutrient media was evaluated. Vine production utilizing modified sandponics nutrient media with trellised plants was compared to the conventionally used soil media. Analysis of variance indicated that the main effects of cultivar and substrate were highly significant (p < 0.0001) for nodes produced, vine multiplication rate (VMR), number of cuttings produced, and vine length. In addition, cultivar by substrate interaction was highly significant at 0.01 probability level for nodes produced, VMR, and vine length. Vine multiplication rate was 33% higher in the sandponics system compared to the conventional soil method of multiplying sweetpotato vines. Among the cultivars studied, Irene was the most favorable cultivar with a VMR of 65.2 in sand and 45.5 in soil. The cost-effectiveness analysis indicates that the cost per cutting (i.e., 3–4 nodes) produced from sandponics method was 4.6 KSH (US$ 0.046) as compared to 3.1 KSH (US$ 0.031) per cutting produced from conventional method. Sandponics system is competitive due to its capability of increased VMRs. However, the optimal number of ratooning needs to be investigated to understand the economies of scale in future research.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.audienceAcademicsen
dcterms.audienceCGIARen
dcterms.available2020-01-30
dcterms.bibliographicCitationWanjala, B.W.; Srinivasulu, R.; Makokha, P.; Ssali, R.T.; McEwan, M.; Kreuze, J.F.; Low, J.W. 2020. Improving rapid multiplication of sweetpotato (Ipomoea batatas L. (Lam)) pre-basic seed using sandponics technology in East Africa. Experimental Agriculture. ISSN 1469-4441. 56:3. pp. 347-354en
dcterms.extent347-354en
dcterms.issued2020-01-30
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherCambridge University Pressen
dcterms.subjectsweet potatoesen
dcterms.subjectseed productionen
dcterms.subjectseed systemsen
dcterms.subjectyieldsen
dcterms.typeJournal Article

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