The Effect of Humic Substances on Rock Phosphates

The ability of humic substances to solubilize and complex with natural minerals, such as rock phosphates, is well documented. The bioavailability of nutrients released from rock minerals by microbiological activity is enhanced in the presence of humic substances. Humic substances can improve the effectiveness of rock phosphates by causing the release of (PO4)3- anions and (Ca)2+ […]

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