Abstract
As a result of its metabolic functions such as exudation of organic and inorganic substances, nutrient and water uptake, and proliferation of microorganisms on the root surface, root growth makes its surrounding microzone differ, both physically, chemically and biologically, from the bulk of the soil. This microzone, which is generally considered to be within 4 mm of the root surface, and accounts for about 1–3% of the volume of the plowed layer, is called the rhizosphere (Liu 1980). However, the zone influenced varies with plant type, the growing period and root development, and may also be influenced by soil properties and nutrient status. Consequently, there is no clearly defined zone for the rhizosphere.
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Liu, ZY. (1997). Nitrogen in the rhizosphere. In: Zhu, Zl., Wen, Qx., Freney, J.R. (eds) Nitrogen in Soils of China. Developments in Plant and Soil Sciences, vol 74. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5636-3_10
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DOI: https://doi.org/10.1007/978-94-011-5636-3_10
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