Integrated irrigation/drainage management to sustain irrigation and to protect soil and water resources

agua de riego agua salina besoin en eau calendario de los riegos calendrier des irrigations conservation de l'eau conservation des sols drainage drenaje eau d'irrigation eau saline eau souterraine environmental degradation gestion des eaux groundwater hidrologia hydrologie hydrology irrigation irrigation scheduling irrigation systems irrigation water lutte antipollution necesidades de agua pedogenese pollution control riego saline water salinidad del suelo sistemas de riego soil conservation soil genesis soil salinity water conservation water management water requirements