Pacific Fertiliser sells a Carbon Coated Urea product (or black coated urea). The urea coating, is a combination of organic carbon and other biological stimulants that increase the microbial activity around the granule increasing fertiliser use efficiency. The coating secures nitrogen within the soil and reduces volatilization and leaching by up to 30% over standard urea. The coated urea product has the added benefit of carbon for cell structure which increases energy, water and nutrient holing capacity. The coating is an organic complex specifically manufactured to contain a unique ratio of oxidative functional groups and cofactors of biological oxidation. Stabilising and binding technologies are employed to ensure coating integrity and reaction timing.
Nitrogen Retention in the Soil: Carbon Coated Urea v Standard Urea
| Low Moisture | 2 wks | 4 wks | 6 wks | 8 wks | 10 wks |
| Black Urea | 95% | 84% | 75% | 70% | 62% |
| Urea | 55% | 30% | 15% | 3% | 1% |
| Optimum Moisture | 2 wks | 4 wks | 6 wks | 8 wks | 10 wks |
| Black Urea | 90% | 80% | 65% | 52% | 46% |
| Urea | 75% | 42% | 26% | 8% | 5% |
| High Moisture | 2 wks | 4 wks | 6 wks | 8 wks | 10 wks |
| Black Urea | 90% | 75% | 65% | 50% | 45% |
| Urea | 68% | 40% | 15% | 4% | 3% |
These Tests show that there is significantly less leaching of N from Carbon Coated Urea.
We also sell polymer coated urea providing up to 270 day (9 mths) controlled release urea (N80, N90, N120, N180 & N270)
