Soft Rock Phosphate

100% Natural :: Soft Rock Phosphate is the best natural source of phosphorus and calcium. It is mined in Florida from the best deposit in the country. Soft Rock Phosphate is both an immediately available and a long-term source of phosphorus. It averages 20% P2O5 (3% immediately available) and 20% Calcium. It can supply phosphorus and calcium for up to 5 years after application, depending on the crop.
Phosphorus in the Soil: Phosphorus is the catalyst of plant nutrition. It is the job of phosphorus to compound all the nutrients (except nitrogen) combining them with itself so that calcium can carry everything into the plant. Soils must have good phosphorus uptake to build sugar levels in the plant. Low phosphorus levels can be corrected by applying soft rock phosphate. Colloidal Phosphate sources like this one, do not leach out of the soil profile like chemical sources do!
This product has been giving amazing results in gardens. Increases the sugar and mineral content of fruits and vegetables. Not to be confused with hard rock phosphate which is not nutritionally as readily available. :: Application Rate: 3 lb. per 100 sq. ft. or 1 ton per acre on phosphate deficient soils, less on fertile soils. Soft Rock phosphate should be applied and worked in prior to planting. Trees and berries, Common Use is: 10 lb. per 100′ row