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  2. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    The prevailing view in the 1940s and 1950s was that P availability was maximized near neutrality (soil pH 6.5–7.5), and decreased at higher and lower pH. [ 29 ] [ 30 ] Interactions of phosphorus with pH in the moderately to slightly acidic range (pH 5.5–6.5) are, however, far more complex than is suggested by this view.

  3. Soil acidification - Wikipedia

    en.wikipedia.org/wiki/Soil_acidification

    Soil acidification is the buildup of hydrogen cations, which reduces the soil pH. Chemically, this happens when a proton donor gets added to the soil. The donor can be an acid , such as nitric acid , sulfuric acid , or carbonic acid .

  4. Iron deficiency (plant disorder) - Wikipedia

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

    Take a soil sample at surface and at depth. If the pH is over seven then consider soil remediation that will lower the pH toward the 6.5 - 7 range. Remediation includes: i) adding compost, manure, peat or similar organic matter (warning. Some retail blends of manure and compost have pH in the range 7 - 8 because of added lime.

  5. This Vibrant Evergreen Shrub Will Add Privacy To Your ... - AOL

    www.aol.com/vibrant-evergreen-shrub-add-privacy...

    In areas where soil pH is neutral or alkaline range, use an acid-forming azalea or camellia fertilizer to lower pH. Some products, such as Holly-tone, are designed specifically for fertilizing ...

  6. Is Wood Ash Good for the Garden? 5 Tips for Using This ... - AOL

    www.aol.com/lifestyle/wood-ash-good-garden-5...

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  7. Manganese deficiency (plant) - Wikipedia

    en.wikipedia.org/wiki/Manganese_deficiency_(plant)

    Manganese deficiency is easy to cure and homeowners have several options when treating these symptoms. The first is to adjust the soil pH. Two materials commonly used for lowering the soil pH are ammonium sulfate and sulfur. Ammonium sulfate will change the soil pH instantly because the ammonium produces the acidity as soon as it dissolves in ...