Product Overview & Key Features
Diammonium Phosphate (DAP), with the chemical formula (NH₄)₂HPO₄, is a high-concentration, binary nitrogen-phosphorus compound fertilizer essential for modern, high-yield agriculture. Produced via the neutralization of ammonia and phosphoric acid, it delivers critical nutrients in an efficient, free-flowing granular form.
- High Nutrient Density: The standard grade 18-46-0 provides 18% Nitrogen (N) in the stable ammonium form and 46% available Phosphate (P₂O₅), primarily water-soluble. This high analysis reduces shipping and handling costs per unit of nutrient.
- Superior Physical Quality: Hard, uniform grey granules ensure excellent storage stability (non-hygroscopic, anti-caking) and are perfectly suited for precise, mechanized bulk blending and application.
- Synergistic Agronomic Effect: The combination of N and P promotes vigorous vegetative growth, robust root system development, enhanced flowering, and improved grain filling. It builds crop resilience against environmental stresses like drought and cold.
- Versatile Application: Primarily used as a highly effective base fertilizer, incorporated into the soil before planting. It can also be used for early top-dressing with proper placement. Suitable for a wide range of crops, especially phosphorus-responsive ones.
Agronomic Benefits & Primary Uses:
DAP is a cornerstone fertilizer for initiating crop growth. The phosphorus component is crucial for early root establishment and energy transfer, while the ammonium nitrogen provides a stable, less-leachable nitrogen source that supports sustained early growth. It is highly recommended for corn, wheat, rice, rapeseed, cotton, and various fruit trees.
Application Recommendations
- Main Method: Apply as a base fertilizer before or during sowing/planting. Incorporate into the root zone.
- Seed Fertilizer Use: Possible but requires precise placement (side-band or below seed) to avoid direct contact and potential ammonia damage to seedlings.
- Top-Dressing: Can be used for early growth stage supplementation with immediate soil incorporation.
- Soil Compatibility: Best performance in neutral to slightly acidic soils. Long-term exclusive use may contribute to soil acidification; periodic soil testing is advised.
Key Advantages for Bulk Buyers & Traders
- Proven Efficacy: Reliable and consistent crop response for decades.
- Logistical Efficiency: High nutrient concentration and good physical properties lower handling and transportation costs.
- Formulation Flexibility: An ideal component for bulk blending operations to create customized NPK mixes.
- Global Standard: Recognized and trusted quality specification (18-46-0) worldwide.
Important Usage Notes:
- Do NOT mix with alkaline materials (e.g., lime, ashes) to prevent nitrogen loss through ammonia volatilization.
- Practice Balanced Fertilization: DAP supplies NO potassium. Must be supplemented with potash (K) and other nutrients based on soil tests for optimal results and soil health.
- Storage: Store in a cool, dry place. Although non-hygroscopic, keeping bags sealed preserves quality.
Post time: Feb-06-2026