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dc.contributor.authorBandyopadhyay, R.
dc.contributor.authorAtehnkeng, J.
dc.contributor.authorOrtega-Beltran, A.
dc.contributor.authorAkande, A.
dc.contributor.authorFalade, T.
dc.contributor.authorCotty, P.J.
dc.date.accessioned2020-07-29T08:48:27Z
dc.date.available2020-07-29T08:48:27Z
dc.date.issued2019
dc.identifier.citationBandyopadhyay, R., Atehnkeng, J., Ortega-Beltran, A., Akande, A., Falade, T., & Cotty, P.J. (2019). “Ground-truthing” efficacy of biological control for aflatoxin mitigation in farmers’ fields in Nigeria: from field trials to commercial usage, a 10-year study. Frontiers in Microbiology, 10: 2528, 1-23.
dc.identifier.issn1664-302X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/6903
dc.description.abstractIn sub-Saharan Africa (SSA), diverse fungi belonging to Aspergillus section Flavi frequently contaminate staple crops with aflatoxins. Aflatoxins negatively impact health, income, trade, food security, and development sectors. Aspergillus flavus is the most common causal agent of contamination. However, certain A. flavus genotypes do not produce aflatoxins (i.e., are atoxigenic). An aflatoxin biocontrol technology employing atoxigenic genotypes to limit crop contamination was developed in the United States. The technology was adapted and improved for use in maize and groundnut in SSA under the trademark Aflasafe. Nigeria was the first African nation for which an aflatoxin biocontrol product was developed. The current study includes tests to assess biocontrol performance across Nigeria over the past decade. The presented data on efficacy spans years in which a relatively small number of maize and groundnut fields (8–51 per year) were treated through use on circa 36,000 ha in commercially-produced maize in 2018. During the testing phase (2009–2012), fields treated during one year were not treated in the other years while during commercial usage (2013–2019), many fields were treated in multiple years. This is the first report of a large-scale, long-term efficacy study of any biocontrol product developed to date for a field crop. Most (>95%) of 213,406 tons of maize grains harvested from treated fields contained <20 ppb total aflatoxins, and a significant proportion (>90%) contained <4 ppb total aflatoxins. Grains from treated plots had preponderantly >80% less aflatoxin content than untreated crops. The frequency of the biocontrol active ingredient atoxigenic genotypes in grains from treated fields was significantly higher than in grains from control fields. A higher proportion of grains from treated fields met various aflatoxin standards compared to grains from untreated fields. Results indicate that efficacy of the biocontrol product in limiting aflatoxin contamination is stable regardless of environment and cropping system. In summary, the biocontrol technology allows farmers across Nigeria to produce safer crops for consumption and increases potential for access to premium markets that require aflatoxin-compliant crops.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.description.sponsorshipAfrican Agricultural Technology Foundation
dc.description.sponsorshipCGIAR Research Program on Agriculture for Nutrition and Health
dc.description.sponsorshipWorld Bank
dc.description.sponsorshipUnited States Department of Agriculture
dc.description.sponsorshipEuropean Union
dc.format.extent1-23
dc.language.isoen
dc.subjectAflatoxins
dc.subjectBiological Control
dc.subjectMaize
dc.subjectGroundnuts
dc.subjectFood Security
dc.subjecttrials
dc.title"Ground-truthing" efficacy of biological control for aflatoxin mitigation in farmers' fields in Nigeria: from field trials to commercial usage, a 10-year study
dc.typeJournal Article
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.crpMaize
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUnited States Department of Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemePlant Production and Health
cg.researchthemeSocial Science and Agribusiness
cg.identifier.bibtexciteidBANDYOPADHYAY:2019a
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectAflatoxin
cg.iitasubjectAgronomy
cg.iitasubjectDisease Control
cg.iitasubjectFood Security
cg.iitasubjectGrain Legumes
cg.iitasubjectMaize
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.journalFrontiers in Microbiology
cg.notesOpen Access Journal; Published online: 08 Nov 2019
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3389/fmicb.2019.02528
cg.iitaauthor.identifierRanajit Bandyopadhyay: 0000-0003-2422-4298
cg.iitaauthor.identifierAlejandro Ortega-Beltran: 0000-0003-3747-8094
cg.iitaauthor.identifieradebowale akande: 0000-0002-6521-3272
cg.iitaauthor.identifierTitilayo Falade: 0000-0001-5562-7861


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