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dc.contributor.authorDE MEY, Yann-
dc.contributor.authorDemont, Matty-
dc.contributor.authorDiagne, Mandiaye-
dc.identifier.citationJOURNAL OF AGRICULTURAL ECONOMICS, 63(1), p. 175-200-
dc.description.abstractGranivorous birds, mainly the Red-billed Quelea, have subsisted on cereal crops in Africa for centuries and have caused substantial damage. There is, however, limited recent evidence on their impact. We propose an indirect method to estimate bird-inflicted crop losses by fitting a production function with a damage abatement component and pest intensity slope dummies on a panel database of rice farmers in the Senegal River Valley. This allows us to estimate both bird damage and marginal productivity of bird control at different levels of bird pressure. Annual bird damage is found to average around 13.2% of the potential rice production during the wet seasons of 20032007, which translates into an average annual economic loss of 4.7 billion FCFA (7.1 million). Our results are consistent with farmers perceived bird-inflicted crop losses, averaging 15.2%. More alarmingly, we observe declining marginal productivities of bird control under increasing bird pressure. Farmers indicate that at high bird pressure, the efficacy of traditional bird scaring methods is inadequate, which suggests that predictive (monitoring), preventive (population control) and protective (insurance) measures against massive invasions are more urgent than improving the average efficacy of curative measures (pest control). These findings are especially relevant to farmers and policy-makers who are currently struggling to implement an ambitious food self-sufficiency programme in Senegal.-
dc.description.sponsorshipYann de Mey is with the Centre for Environmental Sciences, Hasselt University, Agoralaan Gebouw D, BE-3590, Diepenbeek, Belgium. Matty Demont and Mandiaye Diagne are with the Africa Rice Center (AfricaRice), B. P. 96, Saint-Louis, Senegal. E-mail: for correspondence. Financing from the European Union is gratefully acknowledged. This research has been made possible thanks to the valuable input of our partners SAED (Societe d'Amenagement et d'Exploitation des terres du Delta et des vallees du fleuve Senegal et de la Faleme) and UJAK (Union des Jeunes Agriculteurs de Koyli-Wirnde). Yann de Mey benefitted from a travel grant from the Flemish Interuniversity Council - University Cooperation for Development (VLIR-UOS). We thank the editor and three anonymous reviewers for their constructive comments that greatly improved this manuscript. We further thank Eric Tollens (Katholieke Universiteit Leuven), Paul D. Mitchell (University of Wisconsin-Madison) and Bertrand Muller (AfricaRice) for their valuable research support. An earlier version of this article has been presented at the Africa Rice Congress 2010, Bamako, Mali, 22-26 March 2010 where it has received the Best Paper Award in the theme 'Integrated management of pests, diseases and weeds in rice-based systems'. We are grateful to the conference organisers and participants for their useful feedback.-
dc.subject.otherAgricultural Economics & Policy; Economics; damage control productivity; food security; nonlinear estimation; panel data; sub-Saharan Africa; C13; C23; Q12; Q18-
dc.subject.otherDamage control productivity; food security; nonlinear estimation; panel data; sub-Saharan Africa; C13; C23; Q12; Q18-
dc.titleEstimating Bird Damage to Rice in Africa: Evidence from the Senegal River Valley-
dc.typeJournal Contribution-
dc.description.notes[Demont, Matty; Diagne, Mandiaye] Africa Rice Ctr AfricaRice, St Louis, Senegal. [de Mey, Yann] Hasselt Univ, Ctr Environm Sci, BE-3590 Diepenbeek, Belgium.
item.accessRightsRestricted Access-
item.fullcitationDE MEY, Yann; Demont, Matty & Diagne, Mandiaye (2012) Estimating Bird Damage to Rice in Africa: Evidence from the Senegal River Valley. In: JOURNAL OF AGRICULTURAL ECONOMICS, 63(1), p. 175-200.-
item.fulltextWith Fulltext-
item.validationecoom 2013-
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