The pHusion KMS 0-0-28 14% Magnesium 12% Sulfur supplies three vital nutrients critical for proper soil chemistry - potassium, magnesium, and sulfur. When soils are deficient in these nutrients, other primary and secondary nutrients can become unavailable which prevents the plant from efficiently utilizing the nutrients within the soil. pHusion KMS 0-0-28 contains pHusion Organic Acid which aids in releasing tied up nutrient complexes. In turn, these nutrients become available to the plant.