Urea is one of the most concentrated nitrogenous fertilizers. Its nitrogen content is high and is readily converted to ammonia in the soil, an inexpensive compound, it is incorporated in mixed fertilizers as well as being applied alone to the soil or sprayed on foliage. With formaldehyde it gives methylene urea fertilizers, which release nitrogen slowly, continuously, and uniformly,
When urea is placed on the surface of the soil, a chemical reaction takes place that changes the urea to ammonium bicarbonate. The ammonium will convert into a gas, which is then lost if not protected. This means that urea should be mixed in with the soil for maximum effectiveness. This may be done either by broadcasting the urea then plowing it into the soil immediately or by injecting the urea into the soil. This may also be done by broadcasting urea then irrigating heavily to push dissolved urea into the soil.
Spread the urea evenly across the soil.
Wet the soil. Before urea is turned into the nitrates your plants need, it first becomes ammonia gas. Because gases can easily escape from the surface of the soil, applying fertilizer when the ground is wet will help to incorporate the urea into the soil before the chemical reaction begins. This way, more of the ammonia is trapped within the soil. The top half inch (1.3 cm) of soil should be wet to keep as much ammonia gas in the soil as possible. You can water the soil yourself, apply the urea before it rains, or apply within 48 hours after the snow on your fields has completely melted
Spread your urea-based fertilizer evenly across your crops. Apply your fertilizer mixture as you would apply urea on its own, spreading it evenly across the soil. Then water and till the soil in order to incorporate the fertilizer. Urea is less dense than other fertilizers. If you are using spinning-type equipment to spread your urea-based fertilizer over large distances on your farm, keep your spread width below 50 feet (15.2 m) to spread the fertilizer mixture equally.
Grain Size (2-4.5mm)
WHITE GRANULES TREATED WITH ANTI-CACKING AGENT
Granular Urea is a quality granulated fertilizer suitable for use on grass early in the season to give early season grass or for cereal top dressing later in the season.