7 Disadvantages of Manure Fertilizers

When most people think of fertilizers, they think of the artificial kinds that you buy at the store. However, there is another type of fertilizer that is organic and natural: manure. Manure is a decomposed form of dead plants and animals that is applied to the soil to increase productivity. It is an excellent source of nitrogen, phosphorus, potassium, and other essential nutrients for plants. Manure is an organic fertilizer and has been used since the dawn of agriculture. There are many different types of manure, and each has its benefits and drawbacks.

Manure is a great way to add nutrients to the soil, and it also helps improve the structure of the soil. In addition, manure helps suppress pests and diseases. However, there are also many downsides to using manures as fertilizers. We will examine in detail the disadvantages of using manure as a fertilizer. Choosing the best manure and taking care of it correctly is an important step in addressing some of your concerns.

Disadvantages of Manure Fertilizer

When it comes to organic farming, many different types of fertilizers can be used. One of the most popular and effective fertilizers is manure. However, there are disadvantages to using manures as fertilizers. Environmental concerns are also a major concern. Manures and fertilizers have been associated with water pollution, air pollution, and global warming. Another advantage of manure is that it helps to improve soil structure and increase the water-holding capacity of the soil.

The main disadvantage of using manure as a fertilizer is that it can be harmful to plants if not used properly. Manure can contain harmful pathogens that can cause diseases in plants and humans. They can also contain heavy metals that can contaminate soils and water supplies. Another disadvantage of using manure as a fertilizer is that it can take a long time to break down and release its nutrients into the soil. These problems can be reduced by using organic fertilizers or compost manure.

What are the Different Types of Manure?

Manure is organic matter that is used as a fertilizer, soil amendment, or fuel. Types of manure include poultry litter, dairy manure, hog manure, steer manure, and chicken manure.

1. Poultry litter is a mixture of bedding material, feed spillage, feathers, and droppings.
2. Dairy manure: is the excrement of cows.
3. Hog manure is the excrement of hogs.
4. Steer manure is the excrement of steers.
5. Chicken manure: is the excrement of chickens.

Let us learn more for further exploration or understanding of the disadvantages of manure fertilizers and the ways to reduce their harmfulness.

1 . Manure Fertilizers Can Cause Nutrient Deficiencies in Crops

When crops are fertilized with manure, the nutrients in the manure can help to improve crop growth and yield. However, manure fertilizer is often low in nutrients, which can lead to deficiencies in crops. For example, manure may be low in nitrogen, phosphorus, and potassium. This can cause problems such as poor crop growth, reduced yields, and even plant death.

One way to overcome these deficiencies is to supplement the manure with other fertilizers. This can be done by adding commercial fertilizers to the manure or by applying the manure separately from the rest of the fertilizer. In either case, it is important to make sure that the crops receive the correct amount of each nutrient for healthy growth.

2. The Environmental Impact of Using Manure Fertilizers

manure cause algal blooms and pathogens

Animal manure is a valuable fertilizer for farmers, but it can also have a harmful environmental impact if not used properly. Manure contains harmful pathogens and pollutants that can contaminate soil and water. When manure is used as a fertilizer, it can run off into waterways and cause algal blooms and fish kills. In addition, the use of manure can lead to the development of antibiotic-resistant bacteria. Farmers should take steps to minimize the environmental impact of using manure fertilizers. They can do this by using best management practices such as proper storage, spreading, and incorporation of manure into the soil.

3. Groundwater Contamination and Odor Emissions

Manure must be stored and handled carefully to avoid contamination and odor problems.
If manure is spilled or leaks from the storage area, it can contaminate groundwater or runoff into waterways. In addition, odor emissions from livestock operations can cause public health concerns and negatively impact the quality of life. Addressing these issues requires careful planning and coordination between livestock producers and their neighbors.

Farmers have long known that proper storage and handling of manure is critical to maintaining a healthy livestock operation and preventing odor problems. Manure must be stored in a covered facility to keep out rain and contaminants such as rodents and birds. The storage area should be well-ventilated to dissipate the odors, and it is important to regularly stir the manure to promote decomposition.

4. Manure Fertilizers are Costly

The cost of manure fertilizer is often more expensive than other types of fertilizer. The high price is because manure must be collected and transported from animal farms. The cost can be reduced if the farmer has their animals or if there is a local processing plant nearby.

5. Manure as Fertilizer Does Not Have Easy Access

Small-scale farmers in developing countries often do not have access to manure fertilizers. This is because they do not have the resources to get it, and it is not always easily accessible. Even if it is accessible, small-scale farmers may not be able to afford it. This can limit their ability to produce crops and improve their livelihoods.

6. Manure Nutrients: Lost to Leaching and Runoff?

Manure Nutrients: Lost to Leaching and Runoff

Most people know that manure is a valuable fertilizer, but what they may not know is that when it’s used improperly, the nutrients in the manure can be lost to leaching and runoff. This can be a serious problem, especially if the farm is located near a body of water. Nutrient losses from manure can be high, but there are ways to reduce them.

There are ways to reduce nutrient losses from manure, however. One way is to use a buffer strip between the fields where the manure is applied and the body of water. This will help to filter out some of the pollutants before they have a chance to enter the waterway.

Another way to reduce nutrient losses is to apply manure in small quantities over a large area. This will help to minimize runoff and allow time for the nutrients to be absorbed by the soil.

7. Nutrient Pollution Due to Manure Fertilizers: What Is It And How Do We Stop It?

When it comes to excess nitrogen in manure, the main concern for farmers and environmentalists is nutrient pollution. Nutrient pollution can cause a variety of environmental problems, including water contamination, decreased air quality, and habitat loss.

Excess nitrogen can enter waterways through runoff from fields where manure is used as fertilizer. This nutrient-rich water can cause algae blooms to form. These algae blooms can suffocate marine life and make the water undrinkable.

Excess nitrogen in the air can also cause smog, which can cause respiratory problems in people and animals. In addition, too much nitrogen in the soil can leach out into groundwater, making it unsafe to drink.

Fortunately, there are several ways to prevent excess nitrogen from causing nutrient pollution. One way is to use manure as fertilizer sparingly and only when necessary.

One way farmers can prevent excess nitrogen from manure from causing nutrient pollution is by applying the manure at the right time and in the right amount. Applying too much manure can also wash away valuable nutrients that plants need, so it’s important to only apply what the land can absorb. Farmers can also work with their local Extension office to develop a nutrient management plan that will help them keep track of how much nitrogen they are applying to their fields.


There are many disadvantages to using manure as a fertilizer. Manure can carry harmful bacteria and parasites that can spread through the soil, leading to plant diseases. It also takes a lot of time and energy to turn manure into fertilizer, which means it’s often not an efficient use of resources. They are nutrient deficient and can be lost to leaching.

Farmers do not have easy access to them. Additionally, manure is often expensive, so it doesn’t offer many financial benefits over other types of fertilizer and can be harmful to the environment. For these reasons, it is important to use other forms of fertilizer whenever possible. However, manure does have some benefits, so it is still used by many farmers today.