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  2. Raceway (aquaculture) - Wikipedia

    en.wikipedia.org/wiki/Raceway_(aquaculture)

    For trout, stocking rates of 30 to 50 kg/m 3 are normal at the end of a rearing cycle, while for marine species, such as sea bass and sea bream, the achievable load is lower, between 15 and 20 kg/m 3. The total volume required for a raceway is calculated by dividing the total amount of fish in kg by the desired stocking rate in kg per m 3. [17]

  3. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    A maize crop yielding 6–9 tonnes of grain per hectare (2.5 acres) requires 31–50 kilograms (68–110 lb) of phosphate fertilizer to be applied; soybean crops require about half, 20–25 kg per hectare. [21] Yara International is the world's largest producer of nitrogen-based fertilizers. [22]

  4. Organic fertilizer - Wikipedia

    en.wikipedia.org/wiki/Organic_fertilizer

    Organic nutrients increase the abundance of soil organisms by providing organic matter and micronutrients for organismal relationships such as fungal mycorrhiza, [47] (which aid plants in absorbing nutrients), and can drastically reduce external inputs of pesticides, energy and fertilizer, at the cost of decreased yield.

  5. Aquaculture - Wikipedia

    en.wikipedia.org/wiki/Aquaculture

    To produce one kilograms of farmed salmon, products from several kilograms of wild fish are fed to them – this can be described as the "fish-in-fish-out" (FIFO) ratio. In 1995, salmon had a FIFO ratio of 7.5 (meaning 7.5 kilograms of wild fish feed were required to produce one kilogram of salmon); by 2006 the ratio had fallen to 4.9. [ 102 ]

  6. Ocean fertilization - Wikipedia

    en.wikipedia.org/wiki/Ocean_fertilization

    Urea is the most used fertilizer in the world, due to its high content of nitrogen, low cost and high reactivity towards water. [32] When exposed to ocean waters, urea is metabolized by phytoplankton via urease enzymes to produce ammonia. [33] + +

  7. Fauji Fertilizer Company - Wikipedia

    en.wikipedia.org/wiki/Fauji_Fertilizer_Company

    The plant had a production capacity of 570,000 tons per annum (TPA) and an initial construction cost of US$303 million. [12] The plant was supplied by Haldor Topsoe and was commissioned in 1982 after an additional investment of US$15 million. [12] As of 2024, FFC-I has a capacity to produce 403,000 TPA of ammonia and 695,000 TPA of urea. [13]

  8. Integrated multi-trophic aquaculture - Wikipedia

    en.wikipedia.org/wiki/Integrated_multi-trophic...

    Researchers also quantified the water quality parameters and nutrient budgets in (5 kg fish m −3) green water seabream ponds. [ 15 ] [ 17 ] The phytoplankton generally maintained reasonable water quality and converted on average over half the waste nitrogen into algal biomass .

  9. Mariculture - Wikipedia

    en.wikipedia.org/wiki/Mariculture

    Mariculture, sometimes called marine farming or marine aquaculture, [1] is a branch of aquaculture involving the cultivation of marine organisms for food and other animal products, in seawater. Subsets of it include ( offshore mariculture ), fish farms built on littoral waters ( inshore mariculture ), or in artificial tanks , ponds or raceways ...