Initially, the question was to take water for the agricultural production, come back toward the consumption and local market, for the subsistence. It would be a production much more of cassava, maize, beans, pumpkin, coconut, goiaba, pinha, watermelon lemon, orange, hortalias. The Salitre was, at that time, a great granary in this type of production. Great part of the fruits that we bought here in the fair of Juazeiro was almost everything, produced in the Salitre. Except in the production of onion, that was cultivated since its beginning in this region as a cultivation for exportation, that me seems to have if detached as regional production with the irrigation projects. The effect caused for the implantation of projects of irrigation in the half-barren one come modifying the economic structure of some microregions northeast. However, it has places where the implantation of the irrigation comes cheating sufficiently forceful success, as it is the case of the Petrolina/Juazeiro polar region. Such polar region consists of the main experience of success in the implementation of projects of irrigation in the half-barren northeastern, presenting raised indices of economic growth and social development, due to generation of resultant jobs and income of the implantation of the agriculture irrigated in the region.
In accordance with FRANCE (2001), the cities of Petrolina and Juazeiro are most important of the region where if they concentrate the businesses of the agricultural sector. The polar region presents ample area urban, crossed for important road entroncamentos northeast and endowed with infrastructure of railroad, hidrovirio and aerial transport, of great potential of exploitation. The Polar region if characterizes, also, for the existence of great number of companies of industrialization and commercialization of agricultural products. There they find an environment favorable to the diversification and the complementation of indispensable activities to the new paradigms of regional competitiveness (FRANCE, 2001). SAMPAIO & SAMPAIO (2004) (apud Sobel & Ortega, 2005) observes and analyzes that: the cities of Petrolina and Juazeiro had obtained to construct a capital stock sufficiently integrated to the new reality of the polar region, being this one of the possible reasons for the relative observed success.