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Global Impact of Salinity and Agricultural Ecosystems

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Salinity: Environment - Plants - Molecules

Abstract

Agricultural losses caused by salinity are difficult to assess but estimated to be substantial and expected to increase with time. Secondary salinization of agricultural lands is particularly widespread in arid and semiarid environments where crop production requires irrigation chemes. At least 20% of all irrigated lands are salt-affected, with some estimates being as high as 50%. Whereas the world’s population continues to rise, the total land area under irrigation appears to have leveled off. The need for increased food production therefore needs to be met by increases in yield per land area. To reach this goal, genetic engineering of crop plants for enhanced salt tolerance will be a very important approach. In dry regions where fresh water becomes a scarce commodity, irrigation of moderately salt tolerant crops with brackish water is feasible. Transgenic lines of some crop species have been generated which can grow and develop at fairly high salinity levels in controlled environments. These transgenics must be tested vigorously for yield potential under field conditions.

Michael Pitman died March 30, 2000

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Authors and Affiliations

  1. Canberra, ACT, Australia

    Michael G. Pitman

  2. Department of Land, Air and Water Resources, University of California, One Shields Avenue, Davis, CA, 95616, USA

    André Läuchli

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Editors and Affiliations

  1. University of California, Davis, CA, USA

    André Läuchli

  2. Darmstadt University of Technology, Darmstadt, Germany

    Ulrich Lüttge

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Pitman, M.G., Läuchli, A. (2002). Global Impact of Salinity and Agricultural Ecosystems. In: Läuchli, A., Lüttge, U. (eds) Salinity: Environment - Plants - Molecules. Springer, Dordrecht. https://doi.org/10.1007/0-306-48155-3_1

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  • DOI: https://doi.org/10.1007/0-306-48155-3_1

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