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  2. Dystrophic lake - Wikipedia

    en.wikipedia.org/wiki/Dystrophic_lake

    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.

  3. Humic substance - Wikipedia

    en.wikipedia.org/wiki/Humic_substance

    Humic substances account for 50 – 90% of cation exchange capacity in soils. "Humic substances" is an umbrella term covering humic acid, fulvic acid and humin, which differ in solubility. By definition, humic acid (HA) is soluble in water at neutral and alkaline pH, but insoluble at acidic pH < 2. Fulvic acid (FA) is soluble in water at any pH.

  4. Soil acidification - Wikipedia

    en.wikipedia.org/wiki/Soil_acidification

    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 rain. Also in minor cases the plant will eventually die due to the acidic water lowering the plants natural pH.

  5. Soil organic matter - Wikipedia

    en.wikipedia.org/wiki/Soil_organic_matter

    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. Humic acid is the genus that contains the intermediate matter that has medial molecular weight, is soluble in alkalis and insoluble in acids, and has some resistance to microbial action.

  6. Peatland - Wikipedia

    en.wikipedia.org/wiki/Peatland

    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.

  7. Potassium humate - Wikipedia

    en.wikipedia.org/wiki/Potassium_humate

    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.

  8. Humin - Wikipedia

    en.wikipedia.org/wiki/Humin

    Soil consists of both mineral (inorganic) and organic components. The organic components can be subdivided into fractions that are soluble, largely humic acids, and insoluble, the humins. Humins make up about 50% of the organic matter in soil. [1]

  9. Organic fertilizer - Wikipedia

    en.wikipedia.org/wiki/Organic_fertilizer

    Fertilizers are materials that can be added to soil or plants, in order to provide nutrients and sustain growth. Typical organic fertilizers include all animal waste including meat processing waste, manure, slurry, and guano; plus plant based fertilizers such as compost; and biosolids. [2] Inorganic "organic fertilizers" include minerals and ash.

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