How Much Nitrogen is in Urea Fertilizer? 2020
Urea fertilizer has the highest amount of nitrogen compared to any other fertilizer. Urea has a NPK value of 46-0-0 which translates to 46% nitrogen, 0% phosphorus and 0% potassium. Urea is all nitrogen.
A nitrogen fertilizer like urea will promote a tremendous amount of plant foliage growth. Nitrogen not only promotes growth but it also promotes chlorophyll production which makes leaves dark green.
More than 90% of the world’s industrial urea production is used as a nitrogen fertilizer in agriculture.
Urea Fertilizer Composition
Urea fertilizer is composed of 2 ammonia molecules and 1 carbon dioxide molecule. The nitrogen is in the 2 ammonia molecules.
So how do we get the nitrogen out of ammonia?
Soil has a bacteria called Urease which catalyzes urea into ammonia and bicarbonate ions. The ammonia is then oxidized by more bacteria into nitrites and then again into nitrates. Ammonium and nitrates are easily taken up by plant roots.
During this process of decomposition, ammonia gas can escape into the atmosphere. Ammonia gas contains nitrogen and so we want to prevent it from escaping the soil. We want it to remain in the soil to take advantage of the nitrogen. If you mix the urea into the soil, it will prevent ammonia gas from escaping. Also wet soil will reduce the amount of ammonia gas that escapes into the air. You can water the soil before or after fertilizing with urea to maximize nitrogen availability.
Urea Nitrogen and Plant Growth
Nitrogen is one nutrient that plants require in order to exist and is responsible for protein synthesis or foliage growth. The physical structure of plants and animals is solely comprised of proteins. The more nitrogen a plant can uptake or absorb, the more growth and chlorophyll production. Chlorophyll also promotes cell growth. Nitrogen is the key to plant growth and fruit production. Urea is the best nitrogen fertilizer for crop production.
Urea Fertilizer Usage
Use urea fertilizer before or during plant growth and fruit production. These are the periods when plant growth is the greatest and the need for nitrogen is the highest. You can fertilize before planting to prepare the soil and store lots of nitrogen in it in preparation of seedlings or young plants. Seedlings need tons of nitrogen to grow in adults.
A large supply of nitrogen will speed up growth and maturity. Harvest time periods can be shortened and production period lengthened. You will get more, better quality and bigger crops. Plant or crop maturity is based on growth rate. If you can increase the growth rate, you can get to fruit production sooner. A plant does not produce fruit until maturity.
So What Are Some Ideal Uses for Urea Fertilizer?
Grass and Lawns – no brainer huh? What plants do people want to have the most green leaves on? GRASS. Who doesn’t want a super lush and dark green lawn? Grass will hugely benefit from a high nitrogen fertilizer like urea. Urea is a fast release nitrogen fertilizer which means you can green up and thicken up your lawn in a few days. It doesn’t take weeks or months. Just fertilize and water regularly and watch it grow.
Shrubs – want more leaves and darker green leaves on your shrubs? Fertilize with urea. Nitrogen will spurt new growth in any shrub. It will also increase flower production. I have a Feather Duster bush that was a bit lack luster in leaf quantity and quality [color]. I fertilized with nitrogen and now it’s bushy with dark emerald green leaves and lots of flowers. It’s like magic.
Trees – about 10 years ago I bought a very small Oak tree. It was about 3 feet tall and hardly had any leaves. It looked like the Charlie Brown Christmas tree. For many years, I could not get it to grow much or produce more leaves. I thought it was going to die. One year I decided to fertilize it with some nitrogen. WOW…what a difference that made. In a few weeks it started producing more leaves and the new leaves were dark green. Now it has grown 2 feet in height and about 2 feet in girth. It is now full of leaves, so full you can’t see through it unlike before.
Vegetables – do you need your tomato plants to grow faster? Or produce more or bigger tomatoes? Urea to the rescue! Tomato plants are big nitrogen users. Use urea during the growth phase and then again when mature to kick start fruit production. You’ll get bigger tomatoes and better quality and more of them. Mix in a tablespoon of urea with the soil and water. Or as an alternative, mix 1-3 tablespoons of urea with 1 gallon of water. Water the garden once per week with this solution.
Typically the bigger the plant the more nitrogen it needs. So think about big vegetables like melons, tomatoes, peppers, corn, cucumbers, cabbage, beets, leeks and squash. High nitrogen fertilizers like urea and ammonium nitrate will work magic with these.