Agrominerals - all suited for organic use
Canadian Wollastonite - calcium silicate mineral
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Michigan Gypsum 16.6% Sulphur 23% Calcium
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Calcitic Limestone
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VolcanoPhos - 18 to 20 % P2O5
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Tennessee Brown Rock (TBR) phosphate
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Clean slow-release phosphorus source that also contains about 20 percent calcium and provides a spectrum of trace minerals at low-levels.
Available in fine sand consistency and ultrafine micronized form |