1.natural leonardite source 2.liquid concentrated 3.organic agriculture apply Potassium Humate Liquid Potassium Humtate Liquid is a liquid humic acid,derived from leonardite ... , landscaping, gardening and pasture alone or combining with elements of nitrogen, phosphorus,potassium and other trace elements.Product analysisHumic Acid 16 ... in 1L,5L,20L,200L or on requirement. Potassium Humtate Liquid