salinization

The accumulation of salts in soil to the extent that plant growth is inhibited. This is a common problem when crops are irrigated in arid regions; much of the water evaporates and salts accumulated in the soil.

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salinization [cite]

Left. By Tim McCabe (USDA NRCS Photo Gallery: NRCSCO83005.TIF) [Public domain]
Right. By Scott Bauer [Public domain]