From April 2008, many developing countries faced food shortage and this led to massive public protest. In some cases the food is used for biofuel or land is used for biofuel feedstocks. Jatropha curcas tends to be promising and grows in arid and humid regions. Nevertheless, cultivating it blindly has impacts on food in Cameroon and anywhere. By integrated assessment, it is possible to manage J. curcas cultivation in Cameroon through a characterization of forest and grass lands differentiating small and large scale system. The questionnaires coupled with interviews helped to understand the...