It is important to incorporate urea fertilizer into soil rather than leaving it on top, especially when using it with high pH soils. Due to the chemical makeup of urea, nitrogen can be lost to the atmosphere in the form of ammonia gas if the fertilizer is not mixed in or irrigated heavily.
Urea fertilizer can be mixed with calcium cyanamide, mono- or diammonium phosphate, or sulphate of potash. It is not recommended for mixing with superphosphate fertilizers.
| Granular Urea 46% Nitrogen Specifications | |||
|---|---|---|---|
| Test Item | Min. | Max. | Unit |
| Biuret | – | 1 | Vol% |
| Formaldehyde | 0.45 | 0.55 | Vol% |
| Particle Size ( 2-4mm) | 90 | – | Vol% |
| Particle Size less than 0.55 | 0.2 | – | Vol% |
| Moisture | 0.2 | 0.4 | Vol% |
| Nitrogen | 46% | – | Vol% |
| pH | 8.5 | 9.5 | – |
| Crushing Strength | 3 | – | Kg |
| Stowage Actor in Bulk | – | 1.35 | m3/ton |
| Bulk Density | 750 | 760 | Gr/Liter |
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