The release of organic compounds from plant roots into soil brings about remarkable changes in chemical and physical environment and also in growth, activity and composition of microbial population in rhizosphere (Lynch 1990). These changes may effect key processes such as the mineralization of native soil organic matter and nitrogen transformation in rhizosphere (Kuikiman, 1990; Robinson et al., 1989). Understanding of rhizosphere induced modification of carbon mineralization is very much essential to develop nutrient uptake model for precision agricultural practice.
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