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Estimating the Impact of Crop Diversity on Agricultural Productivity in South Africa

Cecilia Bellora, Élodie Blanc, Jean-Marc Bourgeon, Eric Strobl


This chapter is a preliminary draft unless otherwise noted. It may not have been subjected to the formal review process of the NBER. This page will be updated as the chapter is revised.

Chapter in forthcoming NBER book Agricultural Productivity and Producer Behavior, Wolfram Schlenker, editor
Conference held May 11-12, 2017
Forthcoming from University of Chicago Press

Crop biodiversity has the potential to enhance resistance to strains due to biotic and abiotic factors and to improve crop production and farm revenues. To investigate the effect of crop biodiversity on crop productivity, we build a probabilistic model based on ecological mechanisms to describe crop survival and productivities according to diversity. From this analytic model, we derive reduced forms that are empirically estimated using detailed field data of South African agriculture combined with satellite derived data. Our results confirm that diversity has a positive and significant impact on crop survival odds. We show the consistency of these results with the underlying ecologic and agricultural mechanisms.

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This chapter first appeared as NBER working paper w23496, Estimating the Impact of Crop Diversity on Agricultural Productivity in South Africa, Cecilia Bellora, Élodie Blanc, Jean-Marc Bourgeon, Eric Strobl
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