Humic acid is recognized as a fundamental component of organic matter in both soil and water, significantly influencing their physical and chemical properties. The characteristics of humic acid are as follows:

• Enhance (CEC) in soil and liberate K, N and P from adhering to clay particles so it increases elements availability by 20 -30 %.
• Enhance physical soil properties which increase soil aeration and aerobic micro-organisms.
• Assist plants to overcome adverse conditions and increase soil water capacity.
• Acts as intermediate in (CEC) and as buffer for soil solution.
• Perfect media for micro-organisms development.
• Activate root growth and provide better soil aeration.