This product raises soil pH and increases the release of phosphorous and potassium from their insoluble compounds, making them plant available. Use it with Gypsum on soils where magnesium is high. Hi-Cal Lime also loosens clay soil. When soil is sandy, it binds particles together. For immediate use and a gradual breakdown, use the product in pulverized form. It contains less than 5% magnesium oxide.
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Hi-Cal Powder Limestone, 50lb Bag
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