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Seaweed fertiliser (or fertilizer) is organic fertilizer made from seaweed that is used in agriculture to increase soil fertility and plant growth. The use of seaweed fertilizer dates back to antiquity and has a broad array of benefits for soils. Seaweed fertilizer can be applied in a number of different forms, including refined liquid extracts ...
One water-soluble fertilizer is diammonium phosphate (DAP), (NH 4) 2 HPO 4, that as of 2008 had a market price of 1700/tonne−1 of phosphorus. Using that price and the C : P Redfield ratio of 106 : 1 produces a sequestration cost (excluding preparation and injection costs) of some $45 /tonne of carbon (2008), substantially less than the ...
Guano pirating took off in other regions as well, causing prices to plummet and more consumers to try it. The biggest markets for guano from 1840–1879 were in Great Britain, the Low Countries, Germany, and the United States. [19] By the late 1860s, it became apparent that Peru's most productive guano site, the Chincha Islands, was nearing ...
It is used as a fertilizer. Polyhalite was first described in 1818 for specimens from its type locality in Salzburg, Austria. [2] It occurs in sedimentary marine evaporites and is a major potassium ore mineral in the Carlsbad deposits of New Mexico. It is also present as a 2–3% contaminant of Himalayan salt.
Seabed mining. Seabed mining, also known as Seafloor mining[1] is the recovery of minerals from the seabed by techniques of underwater mining. The concept includes mining at shallow depths on the continental shelf and deep-sea mining at greater depths associated with tectonic activity, hydrothermal vents and the abyssal plains.
Yara International ASA is a Norwegian chemical company. It produces, distributes, and sells nitrogen-based mineral fertilizers and related industrial products. Its product line also includes phosphate and potash-based mineral fertilizers, as well as complex and specialty mineral fertilizer products. [3][4][5] The company was established in 1905 ...
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Deep ocean minerals. Deep ocean minerals (DOM) are mineral nutrients (chemical elements) extracted from deep ocean water (DOW) found at ocean depths between 250 and 1500 meters. DOW contains over 70 mineral nutrients and trace elements, including magnesium (Mg), calcium (Ca), and potassium (K) in their bio ionic form.
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