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US 5,178,661 AGranted
Soil treatment
AssigneeNational Energy Council
InventorsHendrik V. H. van der Watt, Robin O. Barnard, Izak J. Cronje, Johannes Dekker
Life of this patent
Estimating the term…
Abstract
A composition for use in applying an alkaline earth metal element to an acidic sub soil. The composition includes the element in the form of a water-soluble salt or complex with fulvic acid in an aqueous medium. The fulvic acid is preferably a coal-derived fulvic acid.
Claims10
A method of applying one or more alkaline earth metal elements to an acidic soil comprising the step of:
- applying a composition consisting essentially of one or more alkaline earth metal elements in the form of a water-soluble salt of coal-derived fulvic acid or in the form of a complex with coal-derived fulvic acid in an aqueous medium to said soil.
Dependencies are inferred from the claim text.