Avaliação de unidades produtivas da agricultura familiar no perímetro irrigado de Sumé, PB.

Abstract

In spite of the technologies existents in irrigation systems, the handling practices with water on irrigated áreas, through right criterions, gets more and more importance, due to the intensification of water reserves explorer. On the agricultural explorer on biggest irrigated polés, in prívate enterprise including the familiar agriculture is a case of surviveness the careful with the natural water reserves. The objective of this search is to verify the technical and economical viability of the familiar agriculture on the Irrigated Perimeter of Sumé - PB. The job was conducted in an area that in the administrative point of view is pertinent at the action area of the 3rd Regional Directing (RD) of Departamento Nacional de Obras Contra as Secas - DNOCS. Witch haves an area of 700 ha, distributed in 51 potions and 47 of these potions are in activity, been 42 destined to creation of animais of little postage and just 5 destined at the vegetables culture principally tomatoes and pimentos. The economical and technical appraisement were made with the cultures of pimentos and creep tomatoes, in an irrigated area with 2ha, divided in two sub áreas irrigated by system of drops, in the months of February until July of2005 and since October until January - 2005/2006. About the area were localized the system of drops, we had collected the following information: equipments installed, length and diameter of tubes (nominal and boarding), coat of plot and drains of the emission. With the information we can conclude. empty of each bit, speed of water for bit, lose of load on the bit and cumulated pressure in each bit. Through the analysis of information about the drains for bits we had concluded the system of drops referent to the following parameters: uniformity and efficient application of water. Ali though the high variation on the lateral lines, this has not influenced the handling, and, because that the distribution water coefficient was considered good. On the other hand the values of application of irrigation are less than the aimed (80%) characterizing a bad quality for the localized irrigation system. The results indicate that the practices are realized with no technical criterions, doing loses or exceptions in water application, with the necessity of techniques of handling for get better the water application. Although the benefices given to vegetable producers, irrigated on the perimeter irrigated of Sumé, like donations of irrigation kits and reduced tariffs of electrical energy (green tariff) these people don't care about the irrigation handling. Even though ali of problems mentioned, the irrigation is economically viable to cultivate tomatoes and pimentos on the Irrigated Perimeter of Sumé, off course, unless the price not to be satisfactory, for that the better is to make a marketing search.