Machine learning model accurately predict maize grain yields in conservation agriculture systems in southern Africa

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cg.authorship.typesCGIAR multi-centreen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationInternational Maize and Wheat Improvement Centeren
cg.contributor.affiliationInternational Centre of Insect Physiology and Ecologyen
cg.contributor.crpMaize
cg.contributor.crpPolicies, Institutions, and Markets
cg.contributor.crpGrain Legumes
cg.contributor.donorUnited States Agency for International Developmenten
cg.coverage.countryMozambique
cg.coverage.countrySouth Africa
cg.coverage.iso3166-alpha2MZ
cg.coverage.iso3166-alpha2ZA
cg.coverage.regionAfrica
cg.coverage.regionSouthern Africa
cg.coverage.regionEastern Africa
cg.creator.identifierJulius Manda: 0000-0002-9599-5906en
cg.creator.identifierChristian Thierfelder: 0000-0002-6306-7670en
cg.creator.identifierMateete Bekunda: 0000-0001-7297-9383en
cg.creator.identifierIrmgard Hoeschle-Zeledon: 0000-0002-2530-6554en
cg.identifier.iitathemeBIOMETRICSen
cg.identifier.iitathemeNATURAL RESOURCE MANAGEMENTen
cg.identifier.iitathemePLANT PRODUCTION & HEALTHen
cg.identifier.iitathemeSOCIAL SCIENCE & AGRICUSINESSen
cg.identifier.urlhttps://ieeexplore.ieee.org/document/9530335en
cg.isbn978-1-7281-6561-5en
cg.placeShenzhen, Chinaen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaSystems Transformation
cg.subject.iitaCROP SYSTEMSen
cg.subject.iitaMAIZEen
cg.subject.impactAreaClimate adaptation and mitigation
dc.contributor.authorMuthoni, Francis K.en
dc.contributor.authorThierfelder, Christian L.en
dc.contributor.authorMudereri, B.T.en
dc.contributor.authorManda, J.en
dc.contributor.authorBekunda, Mateete A.en
dc.contributor.authorHoeschle-Zeledon, Irmgarden
dc.date.accessioned2022-06-17T08:40:48Zen
dc.date.available2022-06-17T08:40:48Zen
dc.identifier.urihttps://hdl.handle.net/10568/119867
dc.titleMachine learning model accurately predict maize grain yields in conservation agriculture systems in southern Africaen
dcterms.abstractAdoption of CA in smallholder farmers in Africa is (s)low partly due to poor spatial targeting. Mapping the crop yield from different CA systems across space and time can reveal their spatial recommendation domains. Integration of machine learning (ML) and free remotely sensed big data have opened huge opportunities for data-driven insights into complex problems in agriculture. The objective of this study was to estimate the spatial-temporal variations of maize grain yields from 13-year multi-location on-farm trials implemented across four countries in southern Africa. The agronomic data from the long-term CA trials is used together with gridded biophysical and socio-economic variables. A spatially explicit random forest (RF) algorithm was developed. Spatial variation of yield advantage or loss from CA practices was compared with conventional tillage practices (CP) during seasons with above and below-normal precipitation. The out-of-bag accuracy of the RF model was R 2 = 0.63 and RMSE = 1.2 t ha -1 . The variable importance analysis showed that the altitude, precipitation, temperature, and soil physical and nutrients conditions variables explained most of the variation in maize grain yield. Maps were generated to identify the locations where CA had a yield advantage over CP during seasons with below and above-average precipitation. The CA showed yield gains of up-to 1 t ha -1 during the season with drought compared to CP. In contrast, the CA returned yield losses of similar magnitude during the season with above-normal precipitation, except in Mozambique. The maps on yield advantage will support the spatial targeting of CA to suitable biophysical and socioeconomic contexts. Results demonstrates that multi-source remotely sensed data, coupled with advanced and efficient machine learning algorithms can provides accurate, cost-effective, and timely platform for predicting the optimal locations for the upscaling sustainable agricultural technologies.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.bibliographicCitationMuthoni, F.K., Thierfelder, C., Mudereri, B.T., Manda, J., Bekunda, M. & Hoeschle-Zeledon, I. (2021). Machine learning model accurately predict maize grain yields in conservation agriculture systems in southern Africa. 9th International Conference on Agro-Geoinformatics (Agro-Geoinformatics), 26-29 July 2021, Shenzhen, China: IEEE, (p. 1-5).en
dcterms.extent1-5en
dcterms.issued2021-07en
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherInstitute of Electrical and Electronics Engineersen
dcterms.subjectdataen
dcterms.subjectclimate variabilityen
dcterms.subjectconservation agricultureen
dcterms.subjectmachine learningen
dcterms.subjectforesten
dcterms.subjectremote sensingen
dcterms.typeConference Paper

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