Importance of Using Phosphoric Acid:
1. A primary source of phosphorus essential for plant growth.
2. A highly soluble liquid fertilizer with a high phosphorus content.
3. Used for cleaning sprayers and drip irrigation hoses at a specific concentration.
4. Highly effective in alkaline and calcareous soils.
5. Significantly reduces the pH of alkaline Egyptian soil.

Phosphoric Acid Application Rates:
Add **300 to 500 cm³** per **1 m³** of water through the irrigation system.