Agronomic and economic benefits of rice–sweetpotato rotation in lowland rice cropping systems in Uganda

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cg.authorship.typesCGIAR and developing country instituteen_US
cg.contributor.affiliationInternational Potato Centeren_US
cg.contributor.affiliationNational Crops Resources Research Institute, Ugandaen_US
cg.contributor.crpRoots, Tubers and Bananasen_US
cg.contributor.donorCGIAR Trust Funden_US
cg.contributor.initiativeSeed Equalen_US
cg.coverage.countryUgandaen_US
cg.coverage.iso3166-alpha2UGen_US
cg.creator.identifierS.Rajendran: 0000-0003-2769-2548en_US
cg.creator.identifierSimon Alibu: 0000-0003-2708-0293en_US
cg.creator.identifierAhamada Zziwa: 0000-0002-7258-2156en_US
cg.creator.identifierMargaret A. McEwan: 0000-0001-8510-0526en_US
cg.creator.identifierNAMANDA SAM: 0000-0001-7822-0626en_US
cg.creator.identifierRobert Mwanga: 0000-0003-4405-2745en_US
cg.creator.identifierJan Low: 0000-0001-8170-6045en_US
cg.identifier.doihttps://doi.org/10.1515/opag-2022-0369en_US
cg.isijournalISI Journalen_US
cg.issn2391-9531en_US
cg.issue1en_US
cg.journalOpen Agricultureen_US
cg.subject.actionAreaResilient Agrifood Systemsen_US
cg.subject.actionAreaSystems Transformationen_US
cg.subject.cipANDEAN ROOTS AND TUBERSen_US
cg.subject.cipSWEETPOTATOESen_US
cg.subject.cipCROP AND SYSTEMS SCIENCES CSSen_US
cg.subject.impactAreaNutrition, health and food securityen_US
cg.subject.sdgSDG 2 - Zero hungeren_US
cg.subject.sdgSDG 12 - Responsible consumption and productionen_US
cg.subject.sdgSDG 13 - Climate actionen_US
cg.subject.sdgSDG 15 - Life on landen_US
cg.volume9en_US
dc.contributor.authorKyalo, G.en_US
dc.contributor.authorRajendran, S.en_US
dc.contributor.authorAlibu, S.en_US
dc.contributor.authorZziwa, S.en_US
dc.contributor.authorMcEwan, M.en_US
dc.contributor.authorEkobu, M.en_US
dc.contributor.authorOkello, S.E.A.en_US
dc.contributor.authorNamanda, S.en_US
dc.contributor.authorOtim, M.H.en_US
dc.contributor.authorLamo, J.en_US
dc.contributor.authorMwanga, R.O.M.en_US
dc.contributor.authorLow, Jan W.en_US
dc.date.accessioned2024-12-03T16:50:38Zen_US
dc.date.available2024-12-03T16:50:38Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/162992en_US
dc.titleAgronomic and economic benefits of rice–sweetpotato rotation in lowland rice cropping systems in Ugandaen_US
dcterms.abstractA crop rotation study was conducted in the Agoro Rice scheme from mid-2015 to 2017 to determine the effect of sweetpotato–rice rotation in the lowlands on financial returns and sweetpotato root, sweetpotato vine, and rice yields compared to monocropping. Treatments included crop rotations of sweetpotato–rice–sweetpotato, rice–sweetpotato–rice, rice–rice–rice (control), and sweetpotato–sweetpotato–sweetpotato (control). The study used the sweetpotato varieties NASPOT 11 (cream-fleshed), NASPOT 10 O, and Ejumula (both orange-fleshed) and the rice varieties Wita 9, Agoro, and Komboka. The results showed that mean sweetpotato root yields in the rotation treatment were significantly higher (28 t ha−1) than the control (19.8 t ha−1), representing a 47% gain in yield. Generally, the percentage gain in yield across years due to rotation ranged from 3 to 132%, depending on the variety. The total number of vine cuttings was significantly different between treatments and seasons (P < 0.001). Mean rice paddy yields in rotation were 8–35% higher than the control. The higher yields of sweetpotato in the rotation can be attributed to the rotation crop benefitting from residual fertilizers applied in rice in the previous season, while rice in the rotation crop could have benefited from the land preparation and establishment of the sweetpotato fields. The benefit of rotation for both crops varied by variety while the revenue-to-cost ratio varied by season and crop variety. Revenue-to-cost ratios for rotation and control treatments were greater than 1, indicating net profits were positive for both. The rotation generated 0.43 times more revenue than rice monocropping. Both rotation and monocropping systems generated profits, but rotation was 43% more profitable. In other words, if monocropping generates 1 dollar, rotation generates 1.43 dollars. The study concludes that rotation of sweetpotato with rice led to (1) increased yields of both rice and sweetpotatoes, (2) more profitable utilization of land, (3) enhanced availability of sweetpotato planting material at the beginning of the upland growing season, and (4) reduced the cost of land preparation for the main rice crop. Findings from this study show that there is great potential for diversification of rice-based cropping systems in Uganda, which will contribute to building sustainable food systems.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.audienceAcademicsen_US
dcterms.audienceCGIARen_US
dcterms.audienceDevelopment Practitionersen_US
dcterms.audienceDonorsen_US
dcterms.audienceExtensionen_US
dcterms.audienceFarmersen_US
dcterms.audienceGeneral Publicen_US
dcterms.audienceNGOsen_US
dcterms.audiencePolicy Makersen_US
dcterms.audienceScientistsen_US
dcterms.available2024-11-18en_US
dcterms.bibliographicCitationKyalo, G., Rajendran, S., Alibu, S., Zziwa, S., McEwan, M., Ekobu, M., Okello, S. E. A., Namanda, S., Otim, M. H., Lamo, J., Mwanga, R. O. M., & Low, J. W. 2024. Agronomic and economic benefits of rice–sweetpotato rotation in lowland rice cropping systems in Uganda. Open Agriculture, 9(1). https://doi.org/10.1515/opag-2022-0369en_US
dcterms.issued2024-11-18en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-4.0en_US
dcterms.subjectcrop rotationen_US
dcterms.subjectriceen_US
dcterms.subjectsweet potatoesen_US
dcterms.subjectagronomic practicesen_US
dcterms.typeJournal Articleen_US

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