Pelletized rock phosphate has an analysis of 1 to 3 percent water-soluble phosphate and 18 to 24 percent calcium. Applying pelletized rock phosphate is an excellent way to build soil phosphorus levels and provide plant-available phosphorus all season long. By adding both sulfate sulfur and rock phosphate in our fertilizer blends, soil pH levels stay low, quickly making the phosphorus in phosphate rock plant available.
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