Liquid
Fertiliser
Accurately & Precisely
Dosable
Three Different
Forms
Optimal Fertilisation with UAN
UAN is a liquid fertiliser consisting of three different forms of nitrogen: amide nitrogen, nitrate nitrogen, and ammonium nitrogen. Nitrate and ammonium nitrogen are directly absorbable by the crop, but amide nitrogen must first be converted by the urease enzyme in the soil before it becomes available to the plant. By utilising these different forms, nitrogen becomes available to the crop at various times. The rate of availability also depends on soil temperature and moisture levels in the soil.
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Where and how best to use it?
When applying UAN, it is important to consider weather conditions to prevent ammonia volatilisation or nitrate leaching. UAN is best applied using an agricultural sprayer or a spoke wheel injector for most conventional crops. For more information, see the Q&A.
Benefits of OCI UAN
Liquid fertilizer
Efficient and accurate dosing across the land
30% nitrogen in three different forms (amide nitrogen, nitrate nitrogen and ammoniacal nitrogen)
Frequently Asked Questions (FAQ)
Our UAN is a liquid fertiliser containing 30% nitrogen. It consists of three different forms of N, Amide nitrogen, Nitrate nitrogen and ammoniacal nitrogen. By providing the crop with these three different forms, nitrogen is available at different times.
For spraying UAN, the most common nozzles are 3-stream nozzles, typically used for large-scale applications with a boom height of around 1 meter.
For better distribution you can consider 5-stream or 7-stream nozzles, which offer a more even spread and enhances coverage.
- Temperature: UAN can be applied in a wide range of temperatures, but extremely high temperatures can increase the risk of volatilization (the loss of nitrogen to the atmosphere). Cooler temperatures are generally better to reduce nitrogen loss.
- Rainfall: A light to moderate rain after application is ideal as it helps dissolve UAN into the soil, promoting nutrient absorption by plants. Heavy rain can lead to runoff, resulting in the loss of urea and potential environmental impact.
- Humidity: High humidity can increase volatilization, particularly if combined with high temperatures.
- Wind: Strong winds can cause drift, which can reduce the effectiveness of the application and lead to uneven distribution of fertilizer.
The best time to apply UAN is when crops are actively growing and can absorb the nutrients. For annual crops, application is often done at planting or shortly after. For perennial crops, UAN can be applied during the growing season to promote growth and development.
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