| The aims of our paper are to identify economic determinants of the on-farm cultivars diversity and to empirically characterize the farmers' diversification choices. We focus on the private decision making process involving the choice of rice cultivars and the corresponding allocation of farmland. For a specific crop, the choice of cultivars, and the resulting cultivars portfolio, involves the farmer comparing benefits and costs. Among the many costs involved, we focus on diversity's management costs. Our results rely on original data collected during the spring 2009 in the study area, and involve a sample of 86 economic units growing rice. We estimated a count data model, in which the endogeneous variable is the number of cultivars grown on the farm. After... |
