| Abstract |
Data Envelopment Analysis (DEA) is a well known method to measure the relative efficiency of decision making units (DMUs), but its standard structure needs the exact consumed input and produced output values for every DMU. In a horticultural context, it is very difficult to calculate a unique value for selected inputs (costs, employment, and so on) and outputs (mainly, revenues and sometimes family hand labour) when comparing different productive strategies (DMUs in this paper), even if we consider only protected crops. Input and output prices vary continuously in an open free market depending on the season, product quality. This paper compares standard DEA results using average values with IDEA (imprecise DEA) results using bounded data from selected productive strategies in Andalusian greenhouses. Two different approaches to the productive strategy efficiency of horticultural farms are included: productive analysis, including only the resourceconsumption related parameters, and structural, taken into account all the cost parameters. Primary data come from a 2001-2002 (agriculture year 2000) macrosurvey funded by the Andalusian Regional Government for the AGROS project -a Decision Support System in an agrarian policy context. |
Gestionar cookies