Abstract
The humate content of soils must be maintained for optimum productivity. Skilled agriculturists are aware of this and accomplish it by indirect and costly methods. The same can be achieved through the use of humate concentrates, which are salts of the humic acids obtainable from natural sources, that can be added directly to soils along with regular commercial fertilizers.
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Burdick, E.M. Commercial humates for agriculture and the fertilizer industry. Econ Bot 19, 152–156 (1965). https://doi.org/10.1007/BF02862826
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DOI: https://doi.org/10.1007/BF02862826