Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/13146
Title: Estimating Bird Damage to Rice in Africa: Evidence from the Senegal River Valley
Authors: DE MEY, Yann 
Demont, Matty
Diagne, Mandiaye
Issue Date: 2012
Publisher: WILEY-BLACKWELL
Source: JOURNAL OF AGRICULTURAL ECONOMICS, 63(1), p. 175-200
Abstract: Granivorous 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.
Notes: [Demont, Matty; Diagne, Mandiaye] Africa Rice Ctr AfricaRice, St Louis, Senegal. [de Mey, Yann] Hasselt Univ, Ctr Environm Sci, BE-3590 Diepenbeek, Belgium. m.demont@cgiar.org
Keywords: Agricultural Economics & Policy; Economics; damage control productivity; food security; nonlinear estimation; panel data; sub-Saharan Africa; C13; C23; Q12; Q18;Damage control productivity; food security; nonlinear estimation; panel data; sub-Saharan Africa; C13; C23; Q12; Q18
Document URI: http://hdl.handle.net/1942/13146
ISSN: 0021-857X
e-ISSN: 1477-9552
DOI: 10.1111/j.1477-9552.2011.00323.x
ISI #: 000298916800010
Category: A1
Type: Journal Contribution
Validations: ecoom 2013
Appears in Collections:Research publications

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