# What is urea ammonium nitrate used for?

## What is urea ammonium nitrate used for?

UAN is a solution of urea and ammonium nitrate in water used as a fertilizer. The combination of urea and ammonium nitrate has an extremely low critical relative humidity (18% at 30 °C) and can therefore only be used in liquid fertilizers. The most commonly used grade of these fertilizer solutions is UAN 32.0.

## How do you calculate units of nitrogen?

Finally, calculate the relative costs per lb of nitrogen for the two nitrogen sources:

1. Nitrogen cost in 1 ton of 28% UAN = \$225 ÷ 560 lbs N = 40 cents per lb N.
2. Nitrogen cost in 1 ton of 10-34-0 = \$70 ÷ 200 lbs N = 35 cents per lb N.

How much does ammonium nitrate cost?

Ammonium nitrate contains 35% N and costs \$550 per ton.

### Is UAN better than urea?

Urea and UAN were equally effective when applied to the soil. Growers should select the nitrogen product than most suits their farming system in terms of logistics and cost. Fertiliser inputs represent a significant proportion of total variable costs in grain production.

### Does UAN need rain?

A rainfall of at least 0.25 to 0.50 inch within approximately two days after application will eliminate volatile loss concern. UAN is half ammonium nitrate and half urea, therefore volatile loss potential from UAN is half of that with urea.

Is UAN hazardous?

May cause fire or explosion if allowed to dry. Explosion Hazard: May be explosive in contact with flammable or organic substances and confinement during fire.

## Does UAN freeze?

The freezing temperature of solutions of all UAN grades is minus 26°С.

## How is N-P-K calculated?

To find the amount of nitrogen in a bag of fertilizer, you must calculate the pounds of nitrogen per 1,000 sq. ft. To calculate the pounds of nitrogen in a bag of fertilizer, multiply the weight of the bag by the percent nitrogen (this is the first number in the N-P-K designation on the front of the bag).

How do you calculate N-P-K ratio?

To determine a fertilizer ratio for a recommendation of 1.5 lb of nitrogen, 0.5 lb of phosphate, and 0.5 lb of potash, divide the weight of each of the three nutrients (1.5 lb, 0.5 lb, 0.5 lb) by the nutrient with the lowest weight (0.5 lb). Thus, the fertilizer ratio that best fits this recommendation is 3-1-1.

### What plants benefit from ammonium sulfate?

Ammonium sulfate and soil pH If you want to grow acid-loving plants, such as blueberries, artichokes, or potatoes, lowering the soil pH can seriously improve your harvest and the overall health of your plants. Ammonium sulfate has a pH value of 5.5 and the sulfur it contains will provide a tiny bit of help.

Can a person buy ammonium nitrate?

Ammonium nitrate sellers would be required to deny sale or transfer of ammonium nitrate to individuals who: Do not possess a valid AN Registered User Number accompanied by a valid photo ID. Are not authorized by a person possessing a valid AN Registered User Number to act on their behalf as an agent.

## Who is the largest producer of ammonium nitrate?

Russian Federation is the top country by ammonium nitrate production in the world. As of 2019, ammonium nitrate production in Russian Federation was 10.2 million tonnes that accounts for 61.64% of the world’s ammonium nitrate production.

## How long before rain can you fertilize lawn?

two days
Apply your fertilizer two days before any expected rainfall. If you apply it, and it looks like it may rain, water your yard with sprinklers before it rains. This will allow the fertilizer application to activate and soak into the soil before the rain comes.

Is UAN explosive?

In solution UAN is normally considered low hazard. However, when the water in UAN evaporates, residue may include concentrated ammonium nitrate and urea. When sensitised or during decomposition, concentrated ammonium nitrate may become unstable and/or explosive.

### What happens when UAN salts out?

In situations where UAN solution has resulted in “salt out” occurring due to cold temperatures, it is possible to re-dissolve the crystals back into solution once the outside temperature has gone significantly above the “salt out” temperature. The situation is similar to putting salt in water.