Urea 46-0-0 is the world’s most widely used solid nitrogen fertilizer. Learn how to use it effectively.
What is Urea 46%?
Urea (CO(NH₂)₂) is a synthetic nitrogen fertilizer with 46% nitrogen content — the highest concentration of any solid nitrogen source. It is produced by reacting ammonia with carbon dioxide at high pressure and temperature.
Key Properties
• Chemical formula: CO(NH₂)₂• Nitrogen content: 46% N• Form: White granules or prills• Solubility: Highly soluble in water (1,080 g/L at 20°C)• pH effect: Slightly alkaline initially, then acidifying
Application Rates by Crop
| Crop | Rate (kg urea/ha) | Timing |
| Wheat | 150–250 | Split: planting + tillering |
| Corn/Maize | 200–350 | Split: planting + V6 stage |
| Rice | 180–280 | Split: transplant + panicle |
| Sugarcane | 300–450 | 3 splits over growing season |
| Cotton | 200–300 | Split: square + bloom |
| Vegetables | 100–200 | Multiple light applications |
Conversion: To calculate kg N from kg urea, multiply by 0.46. Example: 200 kg urea = 92 kg N.
Best Practices to Minimize Nitrogen Loss
Urea is subject to volatilization — the loss of nitrogen as ammonia gas to the atmosphere. Up to 40% of applied N can be lost if urea is surface-applied without incorporation.
How to Reduce Losses:
Incorporate into soil within 24 hours of applicationApply before rainfall or irrigate immediately afterUse urease inhibitors (NBPT) to slow urea breakdownAvoid application on hot, dry, windy daysBand-apply rather than broadcast when possibleSplit applications — 2-3 smaller doses outperform one large application
Storage and Handling
Urea is hygroscopic — it absorbs moisture from the air. Proper storage is essential:
– Store in dry, well-ventilated warehouses• Keep bags off the floor on pallets• Avoid stacking more than 15 bags high• Use sealed packaging for long-term storage• Shelf life: 12–24 months if stored properly
Safety: Urea is non-toxic and non-hazardous. No special PPE required for handling, though gloves and dust masks are recommended for bulk handling.
Industrial vs Agricultural Grade
Urea is used in both agriculture and industry:
– Agricultural grade (prilled/granular) — For direct soil application• Technical grade — For AdBlue/DEF production, adhesives, resins• Feed grade — As a non-protein nitrogen source for ruminants
Granular urea is preferred over prilled for agriculture because granules are harder, less dusty, and spread more evenly.
Bo fertilizer Urea Supply
Bo fertilizer Poland supplies both agricultural and industrial grade urea in bulk quantities:
– Packaging: 25 kg, 50 kg bags, or bulk (1 MT big bags)• Origin: Top-tier manufacturers• Delivery: Worldwide shipping including Africa, Southeast Asia, and South America• MOQ: 20 MT minimum for bulk orders
Contact us for current pricing and availability.
