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      Recursos hídricos, agricultura irrigada e meio ambiente Translated title: Water resources, irrigated agriculture and the environment

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          Abstract

          Reconhece-se cada vez mais a crescente falta de água para irrigação e outros usos. Também, está-se consciente de que, por sua irregular disponibilidade, a qual varia marcadamente ao longo do ano, de ano a ano e de região a região, o uso da água de forma contínua e indefinida, torna-se impossível. Portanto, uma das metas estratégicas para a preservação da disponibilidade e da qualidade dos recursos hídricos consiste em se estabelecer critérios de uso adequado em todas as atividades produtivas, razão pela qual este trabalho aborda a escassez de água, a agricultura irrigada e o meio ambiente, com base em informações e estudos que possam contribuir para o direcionamento de uma agricultura planejada, conservando e otimizando os recursos naturais. Os modelos tecnológicos propostos devem considerar um rigoroso equilíbrio entre produção agrícola e preservação dos recursos naturais. O desenvolvimento atual da irrigação depende de procedimentos tecnológicos e econômicos para otimizar o uso da água, melhorar a eficiência de aplicação, proporcionar ganhos de produtividade baseados na resposta da cultura à aplicação de água e outros insumos, sem que comprometa a disponibilidade e a qualidade do recurso.

          Translated abstract

          There is a growing concern all over the world over the increasing lack of water resources for irrigation and other uses. The irregular availability of water, both in time and space, also greatly affects its use on a continuous basis. One of the strategies for preserving the quantity and quality of water resources consists in establishing criteria for the appropriate use in all productive activities. The objective of this paper is to provide an in-depth analysis on the relationship among water scarcity, irrigated agriculture and the environment, at the same time contributing to studies that may lead to a planned agriculture, preserving and optimizing the natural resources. Modern technological models must consider a rigorous equilibrium involving agricultural production and preservation of natural resources. Today, the development of irrigation depends on technological and economic procedures for water use optimization, improving application efficiency and providing yield gains from crop response to water application and other productive resources, without, however, compromising availability and quality of resources.

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          AGNPS: A nonpoint-source pollution model for evaluating agricultural watersheds

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            Funções de resposta das culturas à irrigação

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              Irrigar é preciso

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbeaa
                Revista Brasileira de Engenharia Agrícola e Ambiental
                Rev. bras. eng. agríc. ambient.
                Departamento de Engenharia Agrícola - UFCG (Campina Grande )
                1807-1929
                December 2000
                : 4
                : 3
                : 465-473
                Affiliations
                [1 ] Universidade Federal da Bahia Brazil
                [2 ] Universidade Federal de Uberlândia Brazil
                [3 ] Universidade Federal de Uberlândia Brazil
                Article
                S1415-43662000000300025
                10.1590/S1415-43662000000300025
                3f9df6fa-05ff-4181-ba1d-b5fd4f0da4cf

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1415-4366&lng=en
                Categories
                AGRICULTURAL ENGINEERING
                ENVIRONMENTAL SCIENCES

                Agricultural engineering,General environmental science
                irrigation,natural resources,water use efficiency,irrigação,recursos naturais,uso eficiente da água

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