Rock Phosphate Fertilizer

Rock phosphate is a mined rock that contains limestone and clay as well as a high concentration of phosphorus (P). The actual composition varies depending on it's source but it usually contains 16 to 20% P.

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Soft Rock Phosphate

Soft rock phosphate is a critical ingredient in building soil phosphorus levels for organics and helps build a soil that is capable of producing nutrient dense foods. Two sources are Idaho …

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Dirt Doctor

Soft rock phosphate used directly under the seed or transplant at planting time is the very best method of application, especially in low acid or high alkaline soils. It is not as critical but still …

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