potassium humate good price, good service, good payment, delivery time immediate The Pot. Humate we produced has Gruanle and Powder two types. Both are soluble ... place. 3)Application 1. Used as organic potash fertilizer. Using potassium humate solution to spray, seed soak, dip root or apply it ... . 4. Mix with other inorganic fertilizer to solid rinse fertilizer potassium humate