A multi-objective model exploration of banana-canopy management and nutrient input scenarios for optimal banana-legume intercrop performance

cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationWageningen University & Researchen
cg.contributor.affiliationBioversity Internationalen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationInstituto de Investigaciones Forestales y Agropecuarias Bariloche, Argentinaen
cg.contributor.affiliationGroningen Universityen
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.donorDirectorate-General for Development Cooperation and Humanitarian Aid, Belgiumen
cg.coverage.countryCongo, Democratic Republic of
cg.coverage.iso3166-alpha2CD
cg.coverage.regionAfrica
cg.coverage.regionMiddle Africa
cg.creator.identifierWalter Ocimati: 0000-0001-6177-7073
cg.creator.identifierGroot, J.C.J.: 0000-0001-6516-5170
cg.creator.identifierGuy Blomme: 0000-0002-3857-964X
cg.creator.identifierRoseline Remans: 0000-0003-3659-8529
cg.creator.identifierGodfrey Taulya: 0000-0002-5690-0492
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.3390/agronomy11020311en
cg.identifier.iitathemeNATURAL RESOURCE MANAGEMENT
cg.isijournalISI Journalen
cg.issn2073-4395en
cg.issue2en
cg.journalAgronomyen
cg.reviewStatusPeer Reviewen
cg.subject.alliancebiovciatFARMING SYSTEMSen
cg.subject.iitaAGRONOMYen
cg.subject.iitaBANANAen
cg.subject.iitaBIODIVERSITYen
cg.subject.iitaFOOD SECURITYen
cg.subject.iitaPLANT BREEDINGen
cg.subject.iitaPLANT PRODUCTIONen
cg.subject.impactAreaNutrition, health and food security
cg.subject.sdgSDG 12 - Responsible consumption and productionen
cg.subject.sdgSDG 2 - Zero hungeren
cg.volume11en
dc.contributor.authorOcimati, Walteren
dc.contributor.authorGroot, Jeroen C.J.en
dc.contributor.authorBlomme, Guyen
dc.contributor.authorTimler, Carl J.en
dc.contributor.authorRemans, Roselineen
dc.contributor.authorTaulya, Godfreyen
dc.contributor.authorNtamwira, Jules Bagulaen
dc.contributor.authorTittonell, Pablo A.en
dc.date.accessioned2021-03-11T09:28:25Zen
dc.date.available2021-03-11T09:28:25Zen
dc.identifier.urihttps://hdl.handle.net/10568/112940
dc.titleA multi-objective model exploration of banana-canopy management and nutrient input scenarios for optimal banana-legume intercrop performanceen
dcterms.abstractBananas on smallholder farmers in the African Great Lakes region are often pruned to illuminate shorter understory intercrops, reducing overall farm profitability. The impact of this practice on environmental and nutritional indicators are not known. This study determined the effect of this practice on operating profit, protein yield, soil organic matter (SOM) balance, and nitrogen input; and the management options for optimal performance of the intercrops. Alternative scenarios for improving soil nutrient balances of the system were also explored. Data from an experiment intercropping bush beans with banana at three leaf pruning levels (i.e., retaining all, seven, and four leaves) was used as the input for the multi-objective optimization FarmDESIGN model. Retention of four functional leaves mimicked a worst-case scenario observed on farms. Banana and bush bean monocrops served as controls. The model maximized operating profit, protein yield, and SOM, and minimized nitrogen input. Nutrient input scenarios in which (i) farmyard manure was only applied at planting (business as usual (‘BaU’)); and ‘BaU’, was combined with (ii) hedges, (iii) inorganic fertilizers, (iv) hedges and goat manure, (v) hedges and inorganic fertilizers, (vi) inorganic fertilizers and goat manure, and (vii) hedges, inorganic fertilizers, and goat manure, were also explored. Severe banana leaf pruning reduced profitability, SOM, and protein yield, although it’s less nutrient demanding. In contrast, the “un-pruned banana-bush bean intercrop” and “sole banana crop” had a higher profitability, SOM balance, and protein yield, whereas they demand more soil nutrients. No profound improvements in operating profit, SOM balance, and protein yield occurred for ‘BaU’, while hedges resulted in mild improvements. Profound improvements in all objectives occurred with the addition of the inorganic fertilizers, while goat manure resulted in a high SOM balance and N input. For ‘BaU’ and hedges, “severely pruned banana-bush bean intercrop” dominated the optimal solution set for improving farm performance. In contrast, when the inorganic fertilizers and/or goat manure was introduced, “un-pruned banana-bush bean intercrop” and/or “sole un-pruned banana crop” were the optimal solutions. The study confirms severe leaf pruning to negatively impact profitability, while the more profitable un-pruned crop options are unsustainable without external input of nutrients. Thus, investments in external inputs are crucial for a sustainable banana-intercrop system. The FarmDESIGN model made the trade-offs and synergies in this complex intercrop system explicit, thus was also helpful for field-level decision making.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.available2021-02-10
dcterms.bibliographicCitationOcimati, W., Groot, J. C. J., Blomme, G., Timler, C. J., Remans, R., Taulya, G., Ntamwira, J., & Tittonell, P. (2021). A Multi-Objective Model Exploration of Banana-Canopy Management and Nutrient Input Scenarios for Optimal Banana-Legume Intercrop Performance. In Agronomy (Vol. 11, Issue 2, p. 311). MDPI AG. https://doi.org/10.3390/agronomy11020311en
dcterms.extent21 p.en
dcterms.issued2021-02-10
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherMDPIen
dcterms.replaceshttps://hdl.handle.net/10568/116353en
dcterms.subjectbananaen
dcterms.subjectexperimental designen
dcterms.subjectcrop managementen
dcterms.subjectintegrated plant productionen
dcterms.subjectoptimization methodsen
dcterms.subjectdiseño experimentalen
dcterms.subjectmanejo del cultivoen
dcterms.subjectproducción vegetal integradaen
dcterms.subjectbananasen
dcterms.subjecthedgesen
dcterms.subjectsynergismen
dcterms.subjectbiodiversityen
dcterms.subjectintercroppingen
dcterms.typeJournal Article

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