DEA in the evaluation of efficiency of the perimeters of development in different agricultural regions

The purpose of this research is the ex-post evaluation efficiency agricultural development projects for period 2000-2009. analysis had been based upon a random sample 244 perimeters spread over 15 departments among which 75 are located in mountainous zone, 98 steppe zone and 51 Sahara zone. DEA (Data Envelopment Analysis) method used to calculate projects. selected outputs represent number developed hectares, created jobs, input, will be represented by total amount expenses. uses an output-oriented approach with either constant or variable scale models. Our shows that only 9 (3 mountains, 4 2 Sahara) have reached boundary, operating at their optimal scale. results proved although has low score three agro-ecological zones, they can reach increase production about 77% 62 % on average, depending whether we suppose variation return having better use invested capital higher returns.