Potassium Fertilizer for Healthier Crops Protassium 174
SOP from Compass Minerals is now Protassium+. Introducing Protassium+, the premium sulfate of potash (0-0-50-17S) that delivers high potassium and sulfate sulfur with virtually no chloride and low salt index. Protassium+ is the K source high-performing growers, crop consultants and retailers have trusted for decades to improve plant health and ...