Phytotoxic Substances in Soils Chapter uri icon

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abstract

  • Plant species are continuously exposed to their ambient soil environment during their life cycle. Sometimes the presence, application and/or formation of certain substances in soils increase to the extent that they become phytotoxic - the property of a substance at a specified concentration that restricts or constrains plant growth. Phytotoxic substances have long been accumulating in the terrestrial ecosystem including soils. Phytotoxicity in soils can be grouped into five broad categories: (1) pesticide toxicity, (2) metal and metalloid toxicity, (3) soil acidity and aluminum and manganese toxicity, (4) soil flooding and manganese and iron toxicity, and (5) soluble salt and sodium toxicity.

publication date

  • December 2013