Phosphoric Acid (H₃PO₄) is a highly concentrated phosphorus source widely used in agriculture as a fertilizer, pH regulator, and water treatment agent. It plays a crucial role in plant growth, particularly in root development, flowering, and fruit formation. Being fully water-soluble, it is ideal for fertigation, hydroponics, and foliar applications, ensuring rapid phosphorus availability. Additionally, it helps manage irrigation water alkalinity, improving nutrient uptake efficiency.