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The formation of a humic lakes via organic runoff has a dramatic effect on the lake ecosystem. Increases in the lake’s acidity make it difficult for fish and other organisms to proliferate. The quality of the lake for use as drinking water also decreases as the carbon concentration and acidity increase.
Extracted humic acid not a single acid; rather, it is a complex mixture of many different acids containing carboxyl and phenolate groups so that the mixture behaves functionally as a dibasic acid or, occasionally, as a tribasic acid. Commercial humic acid used to amend soil is manufactured using these same well established procedures. Humic ...
At a larger scale, soil acidification is linked to losses in agricultural productivity due to these effects. [31] Impacts of acidic water and Soil acidification on plants could be minor or in most cases major. In minor cases which do not result in fatality of plant life include; less-sensitive plants to acidic conditions and or less potent acid ...
Humic substances are classified into three genera based on their solubility in acids and alkalis, and also according to their stability: Fulvic acid is the genus that contains the matter that has the lowest molecular weight, is soluble in acids and alkalis, and is susceptible to microbial action.
Upon extreme drying, the ecosystem can undergo a state shift, turning the mire into a barren land with lower biodiversity and richness. Humic acid formation occurs during the biogeochemical degradation of vegetation debris and animal residue. [27] The loads of organic matter in the form of humic acid is a source of precursors of coal.
The ability of plants to absorb humic substances with their roots and metabolize them has been long debated. [58] There is now a consensus that humus functions hormonally rather than simply nutritionally in plant physiology , [ 59 ] [ 60 ] and that organic sunstances exuded by roots and transformed in humus by soil organisms are an evolved ...
Potassium humate is used in agriculture as a fertilizer additive to increase the efficiency of fertilizers especially nitrogen- and phosphorus-based fertilizer inputs. Other salts of humic acid are manufactured, mainly sodium humate, which is used in animal health supplements. It also can be used in aquaculture.
Clay soils that lack organic matter and porosity benefit from the humic acid and soluble alginates found in seaweed. [ 1 ] [ 62 ] These compounds bond with metallic radicals which cause the clay particles to aggregate, thereby improving the texture, aeration, and retention of the soil by stimulating clay disaggregation. [ 62 ]