1、Emission of the odour substances from fertilizer industry

This process can cause a significant odour nuisance for the environment due to organic compounds content in apatites and phosphorites converted into fertilizers.

2、Why Do I Keep Smelling Fertilizer?

Even if a person is not directly handling fertilizer, nearby agricultural activity or gardening can carry volatile compounds on the air over long distances. Within a household, strong, fertilizer-like odors can be generated by plumbing and sanitation issues.

3、Welcome to the Organic Materials Review Institute

Welcome to the Organic Materials Review Institute | Organic Materials ...

4、What to Do If Your Fertilizer Smells Off – Compost and DAP Storage Tip

Organic fertilizers, such as compost, manure, or bone meal, may emit a strong, earthy or even slightly rotten odor. This is often a natural byproduct of the decomposition process that occurs as the organic matter breaks down.

5、Why Does My Fertilizer Smell?

That “chemical stink” in your tank mix? It might signal poor-quality inputs. Discover why AgTonik’s odorless fulvic acid delivers results without the smell.

What Alkali Produces an Ammonia Smell When Added to Nitrogen Fertilizers?

The pungent ammonia smell emanating from fertilizers is a direct result of the nitrogen content, a vital nutrient for plant growth. Ammonia-based fertilizers offer several benefits, including high nitrogen content, quick-release properties, and cost-effectiveness.

Does Organic Fertilizer Smell? What Every Gardener Should Know (2026)

Most organic fertilizers smell because of the natural breakdown process of organic compounds. When microorganisms digest organic materials, they release various gases – primarily ammonia (NH₃) and methane (CH₄). Organic fertilizers like manure, bone meal, and fish emulsion are packed with nutrients.

How to Get Rid of Fertilizer Smell

Fertilizer smell can be reduced by watering in pelleted chicken manure, covering with well-rotted compost or use well aged manures. The longer the manures are aged, the less they will smell. Cover fertilizers with mulch like bark chips or hay to reduce the distance the smell travels.

Fertilizer Smell: Health Concerns and Proper Storage

The smell of fertilizer is often caused by the presence of ammonia in nitrogen-based fertilizers. Exposure to concentrated amounts of ammonia in fertilizer can lead to health concerns such as eye, throat, and nose irritation, headache, burning eyes, nausea, lung burns, and permanent eye damage.

Is the smell of fertilizer harmful?

Basically, fertilizer smells like horse or chicken manure when used on the farm, and depending on the amount of fertilizer you use, the odor can sometimes become difficult to bear.

Compound fertilizers, also known as composite fertilizers, are chemical fertilizers containing two or more nutritional elements. They typically include major nutrients such as nitrogen (N), phosphorus (P), and potassium (K), along with trace and medium elements. These components work together to provide plants with comprehensive nutrition, promoting crop growth and increasing yields.

some users have reported odors in compound fertilizers, which may be related to the following factors:

1. Raw Material Quality: The quality of raw materials directly affects the final product during the production of compound fertilizers. If raw materials are contaminated with odorous substances like sulfides, ammonia, or others, they can cause unpleasant smells. Additionally, catalysts or additives used in the production process may introduce odors.

2. Manufacturing Process: The production process significantly impacts the quality and performance of compound fertilizers. Imbalanced proportions of certain ingredients during manufacturing can lead to odors. For example, excessive nitrogen may produce an ammonia smell, while high sulfur content in phosphate fertilizers can also result in foul odors.

3. Storage and Usage Conditions: Exposure to external factors during storage or application can cause compound fertilizers to develop odors. For instance, humid environments may cause the fertilizer to absorb moisture, leading to clumping and a musty smell. High temperatures might induce decomposition, producing irritating odors. Improper use, such as overapplication or incorrect application methods, can also contribute to odors.

4. Packaging Materials: The packaging materials for compound fertilizers may contain odorous substances that gradually emit during use, causing the fertilizer to smell.

5. Microbial Activity: Under specific environmental conditions, microbial growth can lead to odors in compound fertilizers. For example, soil microorganisms decomposing organic matter in the fertilizer may produce hydrogen sulfide or other malodorous gases. Microbial activity can also alter certain components of the fertilizer, resulting in unpleasant smells.

To address the odor issues in compound fertilizers, the following measures can be taken:

1. Select high-quality raw materials to ensure that catalysts, additives, and other production aids are free of odorous substances.
2. Optimize the manufacturing process to maintain balanced proportions of ingredients, avoiding excess levels of any single component that could cause odors.
3. Improve storage and usage environments by keeping conditions dry and ventilated, and avoiding exposure to extreme heat or humidity.
4. Use odor-free packaging materials to prevent absorption of external smells during product handling.
5. Manage microbial activity to prevent excessive proliferation of organisms that could induce odors under specific conditions.

odors in compound fertilizers may stem from multiple factors. To ensure product quality and effectiveness, a comprehensive analysis of raw materials, manufacturing processes, storage, and usage conditions is essential, along with targeted solutions. Consumers should also pay attention to product information when purchasing and using compound fertilizers to understand their quality and performance, thereby achieving satisfactory results.