Urea should be applied at the time of sowing. It must avoid coming into contact with the seeds. It can also be used as a top dressing. Because urea has a high nitrogen concentration, it should be mixed with soil or sand before being applied. When the soil contains free water or is likely to remain moist for three or four days after application, urea should not be used. Urea can be mixed with Mono-ammonium Phosphate (MAP) or Di-ammonium Phosphate (DAP) with ease (DAP). However, because Urea reacts with superphosphate, releasing water molecules, it must not be blended with any superphosphate until used shortly after blending. This will result in a wet material that will be difficult to store and apply.
How to use urea fertilizer ?
