Avoid the Burn
Salt Index
Salt index is used to give an indication of the effect a fertilizer can have on a soil system. Sodium nitrate has a salt index of 100 and serves as the standard for comparing relative salt content. When comparing the salt index per unit of K2O, Protassium+® premium sulfate of potash (SOP) has the lowest of all major potassium sources. This allows you to avoid many of the problems that salt poses, including:
• Poor germination
• Nutritional imbalances
• Seedling injury and "Tip Burn"
• Stunted root and shoot growth
• Reduced soil structure and decreased microbial activity
