Mesure et déterminants de l’efficacité d’usage de l’eau d’irrigation dans la production du blé dur: cas de Chabika (Tunisie)
New Medit, Vol 12, n. 1, (March 2013), pp. 49-55
Jel classifications: Q12, Q15, C13
The objective of this study is twofold. Firstly, we aim to measure the technical and water efficiency for a sample of 170 cereal farms in Chebika region (Central Tunisia) using Data Envelopment Analysis method. Secondly, computed water efficiency scores are regressed on explanatory variables using a Tobit model, to help identify its determinants.
Results indicate that technical efficiency of production in the sample of farms investigated is about 70.72% on average, and water use efficiency is only about 64.86%. This suggests that cereal farms may reduce their water use level while maintaining the same level of production. Furthermore, the estimated Tobit model indicates the positive effect on water use efficiency of variety choice, irrigation sources, membership in water users association, irrigation management and farm size. Finally, based on the empirical results, some suggestions are drawn in order to increase water use efficiency.
durum wheat, Data Envelopment Analysis, Water use efficiency, Tobit Model, Chebika, Tunisia