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Different crops can tolerate different levels of salinity in irrigation water. The tolerance of plants to salinity is mainly influenced by:
climate, particularly the abundance or lack of rainfall to leach salts from soils
soil types and drainage characteristics within the root zone which influence the ease of leaching and
salt accumulation
Other factors include rootstock or variety, irrigation method (surface or flood, overhead sprinkler, drip), stage of plant growth and irrigation management.