Fertrell Organic Soil Mineralizer 50 lbs. Certifiable Organic Fertilizer. Mineralize your soil with Fertrell Soil Mineralizer. It provides available calcium to allow your fertilizers to be most effective. It also contains trace minerals, salt and sulfur to condition the soil and allow root structure to remain healthy. Fertrell Soil Mineralizer is a blend of aragonite, greensand, natural potash, and sulfur. The aragonite is a great source of available calcium and trace minerals. Greensand increases the water holding capacity and is a great source of trace minerals. Natural potash is a great source of potash and salt. Sulfur is the element in the Fertrell Soil Mineralizer that brings it all together. Fertrell Soil Mineralizer will improve the overall nutrient content of your forage and make them more palatable by increasing the vitamin and mineral content of the forage. The sulfur in the Fertrell Soil Mineralizer is the stimulator of nitrogen fixation. Apply at a rate of 15 lb per 1000 square feet. [PROHIBITED]