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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.
[4] [5] Seaweed fertilizer application to soils can also alter the structure and function of microbial communities. Seaweed aquaculture has the potential to yield ecosystem services by providing a source of nutrition to human communities and a mechanism for improving water quality in natural systems and aquaculture operations. [6] [7] [8]
Fresh grass clippings have an average ratio of about 15:1 and dry autumn leaves about 50:1 depending upon species. [3] Composting is an ongoing and dynamic process; adding new sources of carbon and nitrogen consistently, as well as active management, is important.
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.
The International Humic Substances Society convenes multidisciplinary biennial international conferences, which bring together scientists from the soil, and aquatic sciences. [12] Some chapters also hold scientific conferences. [13] The society has financial grant programs to encourage the advancement of humic sciences.
A primary element of organic lawn management is the use of compost [2] and compost tea to reduce the need for fertilization and to encourage healthy soil that enables turf to resist pests. [3] A second element is mowing tall (3" – 4") to suppress weeds and encourage deep grass roots, [4] and leaving grass clippings and leaves on the lawn as ...
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]
Different management strategies may also be applied to prevent further acidification: using less acidifying fertilizers, considering fertilizer amount and application timing to reduce nitrate-nitrogen leaching, good irrigation management with acid-neutralizing water, and considering the ratio of basic nutrients to nitrogen in harvested crops ...