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Additionally, exploitation of kelp resources for potash production left little kelp behind for local fertilizer and coastal land became more desirable than inland regions. [ 18 ] [ 21 ] The Scottish seaweed industry went through multiple boom and bust cycles, employing 10,000 families and producing 3,000 tonnes of ash per year during its peak.
An American kelp farmer, Bren Smith of GreenWave explains his farming methods, including the symbiotic relationship kelp has with other seafood he grows. The earliest seaweed farming guides in the Philippines recommended the cultivation of Laminaria seaweed and reef flats at approximately one meter's depth at low tide. They also recommended ...
Mixtures of compost with other organic materials such as Chitosan (which helps elicit plant defense), [14] or non-organic materials such as Montmorillonite-Illite clay and Diatomaceous earth are also often used to increase the minerals to support organism growth. Manure; Duckweed [15] Kelp has very high nutrient density. Seaweed and blue green ...
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Agrominerals (also known as stone bread or petrol fertilizer) are minerals of importance to agriculture and horticulture industries for they can provide essential plant nutrients. [1] Some agrominerals occur naturally or can be processed to be used as alternative fertilizers or soil amendments . [ 1 ]
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 ...
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