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Abstract
In Tunisia, the apples occupy a significant place on the sector of perennial crops. This crop
covered expanded areas during the eighties following an extensive use of efficient water
equipments. However, significant seasonal and annual variation of fruit supplies in the
domestic market were frequently encountered affecting prices at both wholesale and
consumption levels. To study the supply response of apples we carried out an econometric
estimate of the model of supply response. Modelling was carried out in two stages:
determination of the variation of the surfaces, on the basis of equation of news plantations and
the equation of removals, and the variation of yields. The methodological approach that we
followed takes account of the characteristics and specificities related to the perennial crops.
Weak response of the supply to variations in the expected prices is obtained. Price elasticity
obtained is about 0.13.