DAP fertilizer represents a key source read more of N and phosphorus for crop production. NPK Ratio A typical Di-ammonium phosphate bag contains 18.0% nitrogen, 46% phosphorus pentoxide and 0% potassium, commonly expressed as 18‑46‑0 (NPK). Pricing Trends In 2025 the standard price for a 50 kg sack of DAP in Kenya ranges from KES 6500 to