High Nitrogen Fertilizer [2020]

High Nitrogen Fertilizer 2020

High nitrogen fertilizers can make your lawn green and lush or spur growth in your vegetable garden overnight. Nitrogen is responsible for foliage or leaf growth and extra nitrogen will boost cellular synthesis to new heights. It’s like steroids for plants.

Let’s look at some of the higher nitrogen fertilizers.

Urea Fertilizer 46-0-0

Urea fertilizer is based on animal urine but is actually manufactured in a lab where carbon dioxide is reacted with anhydrous ammonia. It is extremely high in nitrogen, at 46%. It has recently replaced Ammonium Nitrate as a widely used and effective nitrogen fertilizer. There is significantly more nitrogen in urea than ammonium nitrate with a NPK of 46-0-0.

Urea is a very inexpensive and effective nitrogen fertilizer. Urea fertilizer comes in granules or prills for easy applications. It can be stored anywhere and is not flammable. It is widely available and sold by the pound.

Urea fertilizer is also available in liquid form.

Urea undergoes a chemical reaction when applied to the top of soil and exposed to moisture. Urea changes into ammonium bicarbonate. The ammonium will then be converted to a gas. Since the ammonium gas contains large amounts of nitrogen, we don’t want the gas to escape into the air. So the best practice is to mix or till the urea fertilizer into the soil to capture the ammonium gas. It’s also recommended to water liberally to push the urea into the soil. Urea fertilizer is highly water soluble and will make nitrogen available to plant roots immediately.

Grass and leafy plants can benefit from Urea fertilizers. It is widely used on lawns and golf courses. Vegetables like lettuce, corn, kale, cabbage, herbs, flowers, sunflowers, spinach, celery and bok choy will benefit from urea. Root plants like beets and radishes and carrots need more phosphorus than nitrogen.

Slow release urea is often made for lawns, golf courses and parks as a long term fertilizer.

Phosagro offers urea fertilizer and ammonium nitrate.

So, people want to know if you can use human pee to fertilize with?

Yes, you can, but you have to dilute it with water. It’s too concentrated and will burn plants. You can dilute it with water in a 20:1 ratio and then water plants with it. It’s free and it bio sustainable.

Human pee has a NPK value of about 11-1-2. It’s pretty high in nitrogen.

Sulfur-Coated Urea 38-0-0

Sulfur-coated urea is a urea fertilizer with a coating to slow down the release of nitrogen into the soil. The sulfur repels water. This allows you to apply more and not harm plants plus provide nitrogen over several months. It’s very effective.

Sulfur coated urea is a very popular fertilizer for grass and lawns. It will feed a lawn for several months.

Here are some other slow release forms of urea.

  • Polymer Coated Urea
  • Polymer Coated Sulfur Coated Urea
  • Reacted Slow Release Nitrogen – methylene urea and urea-formaldehyde
  • Stabilized Nitrogen Technology – Urease inhibitors

Ammonium Nitrate 34-0-0

Ammonium nitrate is a superb nitrogen fertilizer and was the number 1 fertilizer used by farmers. It is 34% nitrogen and highly water soluble. It will increase the growth rate and size of leafy plants. It is a very popular corn fertilizer.

Ammonium nitrate has a NPK value of 34-0-0. It’s all nitrogen. Ammonium nitrate has one advantage over urea. It is more stable and does not loose nitrogen to the atmosphere like urea. But it is flammable.

Ammonium nitrate has 2 sources of nitrogen, ammonia and nitrate. Each provides nitrogen that is readily available to plants via their root system. It’s a very effective fertilizer and is commonly used in hay fields and pastures.

Even though ammonium nitrate is explosive, it can be made stable with additives like sulfur and calcium.

I wrote this in-depth post on ammonium nitrate.

Ammonium Sulfate 21-0-0

Ammonium sulfate contains 21% nitrogen and has a NPK value of 21-0-0. It is very rich in nitrogen. Since is contains ammonium, it is an excellent fertilizer for alkaline soils. The ammonium ion that is released in the soil turns into an acid and thus reduces the alkalinity of the soil. The sulfur additive makes the compound slow releasing over many weeks or even months.

Ammonium sulfate is white to brown crystals with excellent storage properties. It is highly water soluble and has nitrogen from 2 molecules, ammonium and nitrate, similar to ammonium nitrate. This provides rich nutrition to plants but not as much nitrogen as urea or ammonium nitrate. It is a good choice for lawns and gardens.

Ammonium sulfate provides much needed nitrogen and conditions the soil by reducing alkalinity. It kills 2 birds with one stone. Sulfur is also used by plants to remain healthy.

Ammonium sulfate costs about $3/lb. It’s very cheap. American Plant Food Corporation makes ammonium sulfate fertilizers. 

20-10-10 Fertilizer

20-10-10 fertilizers are classified as complete fertilizers because they contain all 3 vital nutrients that plants need to exist. It contains 20% nitrogen, 10% phosphorus and 10% potassium. This is a high nitrogen fertilizer and will promote foliage growth and increase plant size. Because it also contains phosphorus and potassium, it will promote root development and plant health. It is well balanced.

20-10-10 is a great fertilizer for vegetable and flower gardens as well as for lawns too.

It is recommended to fertilize during the growth phase of plants and then again during production of flowers or fruit. You can till in 20-10-10 into the soil before planting to provide nutrients for the upcoming seedlings and young plants. Then fertilize again every 4-6 weeks to support growth and fruit. Remember larger plants require more nitrogen.

You can apply 20-10-10 as a granule on the soil and then till or dissolve in a bucket of water and then water the plants.

Always following directions on the fertilizer bag or use very sparingly. Too much can harm plants.

20-10-10 fertilizer is available at most nurseries and home improvement stores. It costs about $2/lb.

Calcium Nitrate 15-0-0

Calcium nitrate is a high nitrogen fertilizer for increased foliage growth and overall plant size plus calcium to promote a strong immune system in plants.

Calcium nitrate is produced by introducing nitric acid to limestone and then adding ammonia. It is a double salt compound and looks just like salt.

The calcium helps neutralize acid and detoxify plants. Heat and stress can cause calcium deficiencies in plants like tomatoes, peppers and apples. So calcium nitrate is a must have for these types of crops.

It is best to mix calcium nitrate into the soil and then water. Try to keep it off of the leaves and stems of plants. It can also be used as a foliar spray. Mix 1 cup with 25 gallons of water and spray foliage after a good watering.

Potassium Nitrate 13-0-44

Potassium nitrate is another high nitrogen fertilizer with added potassium for crops that have high potassium requirements like orchards. Citrus and apple trees can use more potassium than nitrogen. The nitrate provides an easy to absorb nitrogen nutrient that does not require any microbial or soil action. This can boost quality and yield. So you get big beautiful fruit and lots of it.

Potassium nitrate is often applied before the growing season or during the growing season. It can also be diluted in water and used as a foliage spray during fruit development

Blood Meal 13-1-1

Blood meal is dried animal blood, usually cow from meat packing companies. Blood meal is a high nitrogen fertilizer and contains 13% nitrogen plus 1% phosphorus and 1% potassium. It is a complete fertilizer and provides the 3 vital nutrients that plants require to survive.

Adding blood meal to your garden will make vegetables and flower boxes transform into a lush, tropical garden. Growth rate and plant size will both increase dramatically. The color of leaves will change from light yellowish-green to dark emerald green. The transformation is striking.

Blood meal can also help lower the pH of your soil. It will become more acid, which most plants prefer. I recommend mixing the blood meal into the soil.

Blood meal can be found at most nurseries and home improvement stores and of course online. Espoma Organic Blood Meal at Home Depot costs $11.00 for a 3 lb bag.

Bat Guano 10-3-1

Bat guano is basically bat manure. But it’s only from fruit and insect eating bats. It is used as a soil conditioner and fertilizer. It is high in nitrogen at 10%. It also contains 3% phosphorus and 1% potassium. You use it the same way you use steer manure or horse manure. It can be used as a top dressing or mixed into the soil as an amendment.

Bat guano will encourage rapid plant growth and increased foliage that is super dark green. It will also aid with root and flower development and overall plant health.

Bat guano is a little hard to find in brick and mortar stores like Lowes and Home Depot but is easy to buy online. Espoma Bat Guano costs about $17.00 for a 1.25 lb bag. It is expensive but it’s also organic.