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  2. Plant nutrients in soil - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrients_in_soil

    Bacteria may on average add 25 pounds (11 kg) nitrogen per acre, and in an unfertilised field, this is the most important source of usable nitrogen. In a soil with 5% organic matter perhaps 2 to 5% of that is released to the soil by such decomposition. It occurs fastest in warm, moist, well aerated soil. [55]

  3. Iron fertilization - Wikipedia

    en.wikipedia.org/wiki/Iron_fertilization

    One way to add small amounts of iron to HNLC zones would be Atmospheric Methane Removal. Atmospheric deposition is an important iron source. Satellite images and data (such as PODLER, MODIS, MSIR) [107] [108] [109] combined with back-trajectory analyses identified natural sources of iron–containing dust. Iron-bearing dusts erode from soil and ...

  4. Iron deficiency (plant disorder) - Wikipedia

    en.wikipedia.org/wiki/Iron_deficiency_(plant...

    Iron deficiency can be avoided by choosing appropriate soil for the growing conditions (e.g., avoid growing acid loving plants on lime soils), or by adding well-rotted manure or compost. If iron deficit chlorosis is suspected then check the pH of the soil with an appropriate test kit or instrument. Take a soil sample at surface and at depth.

  5. Soil conditioner - Wikipedia

    en.wikipedia.org/wiki/Soil_conditioner

    While adding a soil conditioner to crops or a garden can seem like a great way to get healthier plants, over-application of some amendments can cause ecological problems. For example, salts, nitrogen, metals and other nutrients that are present in many soil amendments are not productive when added in excess, and can actually be detrimental to ...

  6. How To Garden with Perlite Potting Soil - AOL

    www.aol.com/lifestyle/garden-perlite-potting...

    Garden beds. Every few years, add a two-inch layer with compost and other soil amendments. It’s optimal to work it into the top six to 12 inches, but some people just scatter it and let it work ...

  7. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    Soil pH is a measure of the soil's acidity or alkalinity and is determined on a scale from 0 to 14, with 7 being neutral. A pH value below 7 indicates acidic soil, while a pH value above 7 indicates alkaline or basic soil. Soil acidification is a significant concern in agriculture and horticulture.