Summary
1. The treatment of soil with root exudate solution resulted in increased numbers of Gram-negative bacteria.
2. The oxygen uptake and nitrification of root exudate treated soils were no greater than the controls unless readily decomposable substances such as glucose or peptone were added.
3. The release of phosphate from soil organic matter or yeast nucleic acid was not increased with root exudate supplements.
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Rovira, A.D. Plant root excretions in relation to the rhizosphere effect. Plant Soil 7, 209–217 (1956). https://doi.org/10.1007/BF01666119
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DOI: https://doi.org/10.1007/BF01666119