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    Sulfate Sulfur vs. Elemental Sulfur Part I: There’s a Difference

    – Sulfate-Sulfur is the only form of S the plant can utilize.
    – Elemental S is dependent upon time, temperature and moisture to be available to the plant.
    – Sulfate-Sulfur will not acidify the soil.

    For various reasons, sulfur (S) deficiencies are increasing in many areas of the country. Consequently, fertility programs use this nutrient more routinely. The most common chemical forms of S used in fertilizers are sulfate S (SO₄²⁻) and elemental S (S⁰). But these two forms of S react quite differently in soils. It’s very important to understand the differences between SO₄²⁻ and S⁰ in order to use these two forms in the most effective manner possible.