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Seaweed fertilizers can also be more biodegradable, less toxic, and less hazardous than chemical fertilizers, depending on the type of seaweed fertilizer. [ 4 ] Seaweeds are used in aquaculture operations to uptake fish waste as nutrients and improve water quality parameters. [ 7 ]
[3] [4] Seaweeds are rich in various types of mineral elements (potassium, phosphorus, trace elements, etc.), hence they are extensively used as a form of manure replacement by people of coastal districts. [citation needed] Seaweed-fertilizer also helps in breaking down clays.
Seaweed is super-fast growing, it doesn’t need land, nor pesticides and it doesn’t need to be watered. ... it can be used as a natural biostimulant for plants that can replace fertilizers, and ...
Seaweed has been used as fertilizer since at least Roman times. Early Rhode Island farmers used oxcarts to haul it from the shoreline, a practice protected under the state's constitution.
A seaweed farm in Uroa, Zanzibar Algaculture in Kibbutz Ketura, Israel. Algaculture is a form of aquaculture involving the farming of species of algae. [1]The majority of algae that are intentionally cultivated fall into the category of microalgae (also referred to as phytoplankton, microphytes, or planktonic algae).
Seaweed is an extractive crop that has little need for fertilisers or water, meaning that seaweed farms typically have a smaller environmental footprint than other agriculture or fed aquaculture. [ 14 ] [ 15 ] [ 16 ] Many of the impacts of seaweed farms, both positive and negative, remain understudied and uncertain.
Other seaweed may be used as fertilizer, compost for landscaping, or to combat beach erosion through burial in beach dunes. [54] Seaweed is under consideration as a potential source of bioethanol. [55] [56] Seaweed is lifted out of the top of an algae scrubber/cultivator, to be discarded or used as food, fertilizer, or skin care.
Hydroclathrus clathratus is among the macro-benthic seaweeds that release essential organic nutrients (dissolved organic carbon (DOC), particulate organic carbon (POC), and nitrogen) to the coral reefs. In a study, the seaweeds exuded DOC and POC in amounts of 12.2 ± 2.1 and 4.2 ± 0.3 mg organic C m−² algae surface area h− 1, respectively.
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