What is the humic acid and potassium humate difference?

The primary difference between humic acid and potassium humate is their solubility and use. Humic acid is less soluble and works primarily as a soil conditioner, improving long-term soil fertility and water retention. Potassium humate, being the water-soluble potassium salt of humic acid, is more effective for immediate nutrient absorption and is often used in liquid form for foliar feeding or irrigation. Potassium humate provides both the benefits of humic substances and an additional source of potassium, which is essential for plant health and growth.