Status quo of chemical weed control in rice in sub-Saharan Africa

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cg.contributor.affiliationUniversity of Greenwich
cg.contributor.affiliationAfrica Rice Center
cg.contributor.affiliationUniversity of Bonn
cg.contributor.affiliationInternational Potato Center
cg.contributor.affiliationInstitut National des Recherches Agricoles du Bénin
cg.contributor.affiliationInstitut Tchadien de Recherche Agronomique pour le Développement
cg.contributor.affiliationSierra Leone Agricultural Research Institute
cg.contributor.affiliationNational Cereals Research Institute, Nigeria
cg.contributor.affiliationCouncil for Scientific and Industrial Research, Ghana
cg.contributor.affiliationInstitut de Recherche Agricole pour le Développement, Cameroon
cg.contributor.affiliationEthiopian Institute of Agricultural Research
cg.contributor.affiliationInstitut Sénégalais de Recherches Agricoles
cg.contributor.affiliationCentre National de Recherche Agronomique, Cote d'Ivoire
cg.contributor.affiliationNational Agricultural Research Institute, Gambia
cg.contributor.affiliationMinistry of Agriculture, Tanzania
cg.contributor.affiliationRwanda Agriculture Board
cg.contributor.affiliationInstitut d'Économie Rurale, Mali
cg.contributor.affiliationInstitut de Recherche Agronomique de Guinée
cg.contributor.affiliationInstitut National pour l'Étude et la Recherche Agronomiques, Democratic Republic of Congo
cg.contributor.affiliationKilombero Agricultural Research and Training Institute, Tanzania
cg.contributor.affiliationInstitut National de la Recherche Agronomique du Niger
cg.contributor.affiliationNational Agricultural Research Organisation, Uganda
cg.contributor.affiliationOlam International Ltd
cg.contributor.affiliationCentre National de Recherche appliquée au Développement Rural, Madagascar
cg.contributor.affiliationInstitut de l'Environnement et de Recherches Agricoles, Burkina Faso
cg.contributor.affiliationBureau National des Sols du Burkina Faso
cg.contributor.affiliationJapan International Cooperation Agency
cg.contributor.crpRice
cg.contributor.donorAfrican Development Bank
cg.coverage.regionAfrica
cg.coverage.regionSub-Saharan Africa
cg.creator.identifierJonne Rodenburg: 0000-0001-9059-9253
cg.creator.identifierJean-Martial Johnson: 0000-0002-2638-8774
cg.creator.identifierIbnou Dieng: 0000-0002-1051-9143
cg.creator.identifierKalimuthu Senthilkumar: 0000-0002-2862-411X
cg.creator.identifierElke Vandamme: 0000-0002-0961-6528
cg.creator.identifierMadiama CISSE: 0000-0001-9958-156X
cg.creator.identifierNianankoro KAMISSOKO: 0000-0001-8737-3050
cg.creator.identifierAbibou Niang: 0000-0002-6630-8142
cg.creator.identifierKazuki Saito: 0000-0002-8609-2713
cg.howPublishedFormally Published
cg.identifier.doihttps://doi.org/10.1007/s12571-018-0878-0
cg.isijournalISI Journal
cg.issn1876-4517
cg.issue1
cg.journalFood Security
cg.reviewStatusPeer Review
cg.subject.cipCLIMATE-SMART AGRICULTURE
cg.volume11
dc.contributor.authorRodenburg, J.
dc.contributor.authorJohnson, J.M.
dc.contributor.authorDieng, I.
dc.contributor.authorSenthilkumar, Kalimuthu
dc.contributor.authorVandamme, Elke
dc.contributor.authorAkakpo, C.
dc.contributor.authorAllarangaye, M.D.
dc.contributor.authorBaggie, I.
dc.contributor.authorBakare, S.O.
dc.contributor.authorBam, R.K.
dc.contributor.authorBassoro, I.
dc.contributor.authorAbera, B.B.
dc.contributor.authorCisse, M.
dc.contributor.authorDogbe, W.
dc.contributor.authorGbakatchetche, H.
dc.contributor.authorJaiteh, F.
dc.contributor.authorKajiru, G.J.
dc.contributor.authorKalisa, A.
dc.contributor.authorKamissoko, N.
dc.contributor.authorSekou, K.
dc.contributor.authorKokou, A.
dc.contributor.authorMapiemfu-Lamare, D.
dc.contributor.authorLunze, F.M.
dc.contributor.authorMghase, J.
dc.contributor.authorMaiga, I.M.
dc.contributor.authorNanfumba, D.
dc.contributor.authorNiang, A.
dc.contributor.authorRabeson, R.
dc.contributor.authorSegda, Zénabou
dc.contributor.authorSillo, F.S.
dc.contributor.authorTanaka, A.
dc.contributor.authorSaito, Kazuki
dc.date.accessioned2019-04-23T21:20:40Zen
dc.date.available2019-04-23T21:20:40Zen
dc.identifier.urihttps://hdl.handle.net/10568/100882
dc.titleStatus quo of chemical weed control in rice in sub-Saharan Africaen
dcterms.abstractIf future rice production is to contribute to food security for the increasing population of sub-Saharan Africa (SSA), effective strategies are needed to control weeds, the crop’s fiercest competitors for resources. To gain better insights into farmers’ access to, and use of, herbicides as part of weed control strategies, surveys were conducted in key rice production locations across SSA. Farm surveys were held among 1965 farmers across 20 countries to collect data on rice yields, farmer’s weed management practices, herbicide use, frequencies of interventions and information sources regarding herbicides. Markets were surveyed across 17 countries to collect data on herbicide availability, brand names and local prices (converted to US$ ha−1). Herbicides are used by 34% of the rice farmers in SSA, but adoption ranges from 0 to 72% across countries. Herbicides are more often used by men (40%) than by women (27%) and more often in irrigated (44% of farmers) than in rainfed lowland (36%) or upland rice growing environments (24%). Herbicides are always used supplementary to hand weeding. Following this combination, yield loss reductions in irrigated lowlands and rainfed uplands are estimated to be 0.4 t ha−1 higher than hand weeding alone. In rainfed lowlands no benefits were observed from herbicide use. Sixty-two percent of the herbicides sold at rural agro-chemical supply markets are unauthorized. These markets are dominated by glyphosate and 2,4-D, sold under 55 and 41 different brand names, respectively, and at relatively competitive prices (below average herbicide price of US $17 ha−1). They are also the most popular herbicides among farmers. For advice on herbicide application methods, farmers primarily rely on their peers, and only a few receive advice from extension services (<23%) or inform themselves by reading the product label (<16%). Herbicide application timings are therefore often (38%) sub-optimal. Herbicide technologies can contribute to reduced production losses in rice in SSA. However, through negative effects on crop, environment and human health, incorrect herbicide use may unintentionally counteract efforts to increase food security. Moving away from this status quo will require strict implementation and monitoring of national pesticide regulations and investment in research and development to innovate and diversify the currently followed weed management strategies, agricultural service provision and communications with farmers.en
dcterms.accessRightsOpen Access
dcterms.audienceScientists
dcterms.audienceAcademics
dcterms.audienceCGIAR
dcterms.available2019-01-23
dcterms.bibliographicCitationRodenburg, J.; Johnson, J.M; Dieng, I. et al. 2019. Status quo of chemical weed control in rice in sub-Saharan Africa. Food Security. 1876-4517. 11:1. pp. 69-92.en
dcterms.extentp. 69-92
dcterms.issued2019-02
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherSpringer
dcterms.subjectherbicidesen
dcterms.subjectglyphosateen
dcterms.subjectfarmersen
dcterms.subjectmarketsen
dcterms.subjectriceen
dcterms.typeJournal Article

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