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  2. Iron fertilization - Wikipedia

    en.wikipedia.org/wiki/Iron_fertilization

    Iron fertilization is the intentional introduction of iron-containing compounds (like iron sulfate) to iron-poor areas of the ocean surface to stimulate phytoplankton production. This is intended to enhance biological productivity and/or accelerate carbon dioxide (CO 2 ) sequestration from the atmosphere.

  3. Ocean fertilization - Wikipedia

    en.wikipedia.org/wiki/Ocean_fertilization

    Another cause of concern is the sheer amount of urea needed to capture the same amount of carbon as eq. iron fertilization. The nitrogen to iron ratio in a typical algae cell is 16:0.0001, meaning that for every iron atom added to the ocean a substantial larger amount of carbon is captured compared to adding one atom of nitrogen. [ 35 ]

  4. High-nutrient, low-chlorophyll regions - Wikipedia

    en.wikipedia.org/wiki/High-nutrient,_low...

    Between the 1930s and '80s, it was hypothesized that iron is a limiting ocean micronutrient, but there were not sufficient methods reliably to detect iron in seawater to confirm this hypothesis. [5] In 1989, high concentrations of iron-rich sediments in nearshore coastal waters off the Gulf of Alaska were detected. [ 6 ]

  5. Plant nutrients in soil - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrients_in_soil

    Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs.To be taken up by a plant, a nutrient element must be located near the root surface; however, the supply of nutrients in contact with the root is rapidly depleted within a distance of ca. 2 mm. [14] There are three basic mechanisms whereby nutrient ions dissolved in the soil solution are brought ...

  6. Foliar feeding - Wikipedia

    en.wikipedia.org/wiki/Foliar_feeding

    Foliar application has been shown to avoid the problem of leaching-out in soils and prompts a quick reaction in the plant. Foliar application of phosphorus, zinc and iron brings the greatest benefit in comparison with addition to soil where phosphorus becomes fixed in a form inaccessible to the plant [5] and where zinc and iron are less available.

  7. War in Ukraine Cuts Fertilizer Supply, Hurting Food Prices ...

    www.aol.com/news/war-ukraine-cuts-fertilizer...

    Fertilizer prices have reached record highs, with far-reaching consequences for farmers, agricultural yields and food prices. WSJ’s Patrick Thomas explains the reasons behind the surge and what ...

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