17 Examples of Inorganic Fertilizers

Inorganic fertilizers

Inorganic fertilizers, also known as synthetic fertilizers, are man-made products that help plants grow. They are made in factories and are not natural. These fertilizers are like plant food. They contain important nutrients that plants need, such as nitrogen, phosphorus, and potassium. These nutrients help plants to grow bigger, stronger, and faster. When farmers or gardeners use inorganic fertilizers, they add these nutrients to the soil. This is good for the plants because sometimes the soil does not have enough nutrients on its own. Inorganic fertilizers are very popular because they work quickly and can help a lot of plants at once. However, it is important to use them carefully. If we use too much, it can harm the water and the soil. Here are some examples of inorganic fertilizers:


1. Urea 


Urea is a widely used fertilizer that gives plants nitrogen, helping them grow faster and look greener. It is popular all around the world because it is very effective and doesn’t cost too much. To make urea, factories combine carbon dioxide and ammonia under high pressure. This creates a fertilizer that has 46% nitrogen in it. It is important to use urea in appropriate amounts. Using too much urea can be bad for the environment.

2. Ammonium Nitrate 

Ammonium Nitrate 

Ammonium Nitrate is good for leafy plants such as vegetables and grass in lawns. It is made by mixing ammonia with nitric acid, and this mixture has 34% nitrogen. It helps plants grow their leaves quickly and makes them look healthy. Ammonium Nitrate works effectively and fast but it needs to be handled carefully. If it is not used properly, it can be dangerous and even explosive.

3. Ammonium Sulfate 

Ammonium Sulfate

Ammonium Sulfate gives plants both nitrogen and sulfur. It is made when ammonia is mixed with sulfuric acid, and this mixture contains 21% nitrogen and 24% sulfur. These nutrients are helpful for plants, especially for making proteins. Ammonium Sulfate fertilizer is especially good for soils that are acidic, meaning they have a low pH. It helps plants grow well in these kinds of soils. However, using Ammonium Sulfate a lot can make the soil even more acidic over time. This isn’t always good for all plants because some plants don’t like very acidic soil. So, while it’s useful, it’s important to think about the type of soil and plants before using it.

4. Superphosphate 


Superphosphate is rich in phosphorus, having about 20% of it. It’s made by adding sulfuric acid to rock phosphate. This process pulls the phosphorus out of the rock and makes it into a form that plants can use. Phosphorus is very important for plants because it helps them develop strong roots and healthy flowers. It’s especially good for plants that produce fruits and flowers. However, if too much Superphosphate is used, it can leave too much phosphorus in the soil. This isn’t good because it can harm the soil and the environment.

5. Triple Superphosphate 

Triple Superphosphate 

Triple Superphosphate has about 46% of phosphorus. It’s like a stronger version of regular Superphosphate. To make it, rock phosphate is treated with phosphoric acid, which pulls out a lot of phosphorus from the rock. This is great for plants that need lots of phosphorus but not much nitrogen. Phosphorus helps plants grow strong roots and big, beautiful flowers. However, using too much of this fertilizer can leave a lot of extra phosphorus, which can upset the soil’s balance and might hurt the environment.

6. Monoammonium Phosphate 

Monoammonium Phosphate 

Monoammonium Phosphate provides plants with nitrogen and phosphorus. It’s made when ammonia is mixed with phosphoric acid, resulting in a fertilizer that has 11% nitrogen and a high 52% phosphorus. This mix is really good for young plants that need a lot of phosphorus to grow strong and healthy. One of the best things about Monoammonium Phosphate is that it dissolves in water easily, so plants can take in the nutrients quickly. However, it’s important not to use too much of it. If there’s too much fertilizer, it can be bad for the tiny helpful creatures that live in the soil and keep it healthy.

7. Diammonium Phosphate 

Diammonium Phosphate 

Diammonium Phosphate has both nitrogen and phosphorus, with 18% nitrogen and 46% phosphorus. It’s made by mixing ammonia with phosphoric acid. Having a good balance of the nutrients, it is a really useful fertilizer for lots of different kinds of crops. It’s especially helpful for seeds when they are just starting to grow and for young plants. The nitrogen and phosphorus in it help the seeds sprout, and the young plants get a good start. However, one thing to watch out for is that if it’s used a lot over time, it can make the soil more acidic. This change in the soil might not be good for all plants.

8. Muriate of Potash 

Muriate of Potash 

Muriate of Potash has 60% potassium. This fertilizer is taken out of potash mines or made by evaporating water from salty pools called brine pools. Potassium is a vital nutrient for plants because it helps them stay healthy and fight off diseases. However, Muriate of Potash is great for helping plants with their potassium needs, but just like with other fertilizers, it’s important to use the right amount.

9. Sulfate of Potash 

Sulfate of Potash 

Sulfate of Potash has 50% potassium and 18% sulfur in it. This fertilizer can be made in factories or taken from natural minerals. It’s really good for plants that need both potassium, which helps them grow and stay healthy, and sulfur, which is important for making proteins in the plant. It is also good for plants that can’t handle chloride and is especially helpful for plants that get hurt by too much salt because it doesn’t make the soil salty. Sulfate of Potash is not as tough on the environment as some other fertilizers that have potassium. But it usually costs more than another common potassium fertilizer called Muriate of Potash.

10. Potassium Nitrate  

Potassium Nitrate

Potassium Nitrate usually has about 13% nitrogen and 44% potassium. To make this fertilizer, factories mix potassium chloride with nitric acid. It’s a really good choice for fruits and vegetables because the potassium helps the plants grow well, and the nitrogen makes sure they are healthy. This combination is great for making sure fruits and vegetables develop properly. However, Potassium Nitrate can be a bit more costly compared to some other fertilizers.

11. Calcium Nitrate 

Calcium Nitrate 

Calcium Nitrate is made by mixing calcium carbonate with nitric acid. This mix ends up having 15.5% nitrogen and 19% calcium. Calcium is really important for plants because it makes their cell walls strong. This helps plants, especially tomatoes, stay healthy and prevents problems like blossom end rot, where the end of the fruit rots.

12. Magnesium Sulfate (Epsom Salt) 

Magnesium Sulfate (Epsom Salt) 

Magnesium Sulfate, also known as Epsom salt, is a fertilizer with about 10% magnesium and 13% sulfur. This fertilizer comes from natural deposits found in the earth. Magnesium is really important for photosynthesis. By giving plants magnesium, Magnesium Sulfate helps them have greener leaves and bloom better. It’s especially good for helping plants look healthy and vibrant. However, it’s important to be careful with how much is used.

13. Ammonium Phosphate 

Ammonium Phosphate 

Ammonium Phosphate is a fertilizer that provides a good balance of nitrogen and phosphorus, with 16% nitrogen and 20% phosphorus. It’s made in a way that’s similar to other fertilizers that have ammonium phosphate. This balance makes it a good choice for many different uses in gardening and farming. It helps a lot with the growth of roots and shoots in plants. This means it can help plants grow bigger and healthier. However, if Ammonium Phosphate is used too often or in large amounts, it can make the soil too acidic.

14. Basic Slag 

Basic Slag 

When steel is made, basic Slag is left over, and it has about 10% phosphorus and 10% calcium in it. This is great for plants because phosphorus helps them grow, and calcium makes them strong. Basic Slag can make the soil better, especially if the soil is too acidic.

15. Ammonium Chloride 

Ammonium Chloride 

Ammonium Chloride has a high nitrogen content, about 25%, and it’s especially popular for growing rice because rice plants need a lot of nitrogen to grow well. This fertilizer can be made in a couple of ways: either in a factory using chemicals or as something that’s left over from other processes. Ammonium Chloride works well for crops like rice, helping them to grow strong and healthy. However, while Ammonium Chloride is great for crops that need a lot of nitrogen, like rice, it’s important to use it in the right way to keep the soil healthy.

16. Boron Fertilizers 

Boron Fertilizers 

Boron is really important for making the walls of plant cells strong and helping the plant grow properly. Boron fertilizers are especially useful when the soil doesn’t have enough boron, which happens in some places. By adding boron, these fertilizers can fix this problem and help plants stay healthy.

17. Zinc Sulfate 

Zinc Sulfate 

Zinc Sulfate fertilizer can be made from zinc ore, or it can come from other processes as a leftover. This fertilizer has zinc in a form that plants can use. Zinc is super important for plants because it helps enzymes work right and helps plants make proteins. This fertilizer is really good for plants, especially in places where the soil doesn’t have enough zinc. By adding Zinc Sulfate, plants can get the zinc they need to grow well. However, it’s important to be careful with how much is used.

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