the potassium salt of humic acid made from high grade Leonardite, which is not only a more readily available potassium fertilizer but also has all benefits from humic acid both to soil and to plants, such as soil conditioning, nutrients uptake improving etc. In addition, it has wider applications from soil application, seed soaking, root soaking to fertigation for its high water solubility. 1kg, 5kg,10kg, 25kg.