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An Approach from the Sahel M Keita 1196
Water Conservation and Technology
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Abu Dhabi agricultural animals annual arid areas arid lands Basin bighorn Brackish California canals catchment cattle climate Colorado River conservation controlled-environment costs crops cultivation damage desert areas desert bighorn sheep desertification developing countries downy brome drainage drains drip irrigation economic effective energy environment evaluation evaporation factors farmers farming fertilizer field fish flood forage grasses grazing greenhouses groundwater growth Guayule habitat hectares Imperial Valley improvement increase industrial installed irrigated area irrigation system Israel jojoba oil livestock low rainfall materials methiocarb methods Mexico National natural pasture percent plants plastic population potential problems production quelea Range Management rangelands reduce regions Research rubber runoff sagebrush salinity salt season seed semiarid sheep shrubs soil species sperm whale storage surface temperatures Tucson United University of Arizona utilization vegetation water harvesting Water Resources water supply Wildlife yield zone