Home Crops In Kenya Articles Herbicide Use By Kenyan Farmers: Current Practices And Environmental Impacts

Herbicide Use By Kenyan Farmers: Current Practices And Environmental Impacts

Uses Of Herbicide In Kenya

Herbicides are chemical substances used to control and eliminate unwanted plants or weeds. In Kenya, herbicide use has been on the rise in recent years due to the increasing demand for food production and the need to control weed growth. However, the herbicides use by Kenyan farmers has also raised concerns about the potential negative effects on human health and the environment.

According to a survey conducted in Rift valley and Central provinces, Kenya, there is no published report regarding the actual behavior of farmers’ pesticide use and application patterns. This study aimed to determine pesticide use and application among farmers in these regions. The results of the survey showed that farmers in Kenya use a variety of pesticides, including herbicides, to protect their crops from pests and diseases.

While herbicides can be an effective tool for controlling weed growth and increasing crop yields, their use can also have unintended consequences. For example, the overuse of herbicides can lead to the development of herbicide-resistant weeds, which can be difficult to control and may require even more herbicide use. Additionally, the use of herbicides can also have negative impacts on soil health, water quality, and biodiversity.

Current State of Herbicide Use in Kenya

Herbicides have become increasingly popular among Kenyan farmers in recent years. According to a study conducted in Uasin Gishu County, 85% of wheat farmers use pre-emergence herbicides to control weeds in their fields. In maize production, the adoption of herbicides has led to increased yield and facilitated the adoption of fertilizer use.

Imported herbicides have become more readily available to farmers, with glyphosate and atrazine being the two most commonly used herbicides in Kenya. There are currently 28 different registered glyphosate-based products in the country.

However, the use of herbicides in Kenya is not without challenges. One major issue is the lack of knowledge among farmers on proper usage and safety measures. This can lead to overuse or misuse of herbicides, which can have negative environmental and health impacts.

Another challenge is the high cost of herbicides, which can make them inaccessible to small-scale farmers. The government has implemented subsidies on fertilizers, which has led to an increase in herbicide use by farmers who received the subsidized fertilizer.

Overall, while herbicide use is on the rise in Kenya, there are still challenges that need to be addressed to ensure safe and effective use of these chemicals.

Benefits of Herbicide Use for Kenyan Farmers

Herbicides are an important tool for Kenyan farmers to control weeds and improve crop yields. Here are some of the benefits of herbicide use:

  • Improved weed control: Herbicides can control a wide range of weed species, including those that are difficult to manage with hand-weeding. This can lead to fewer weeds in the field and less competition for nutrients, water, and sunlight, resulting in improved crop yields.
  • Reduced labor costs: Hand-weeding is a labor-intensive activity that requires a lot of time and effort. By using herbicides, farmers can reduce the amount of time and labor required for weed control, freeing up time for other farm activities.
  • Increased crop yields: Studies have shown that herbicide use can lead to significant increases in crop yields. For example, research in Zimbabwe found that herbicide use resulted in yield increases of up to 50% in maize.
  • Improved soil health: Weeds can compete with crops for nutrients and water, and can also harbor pests and diseases. By controlling weeds with herbicides, farmers can improve soil health and reduce the risk of crop damage due to pests and diseases.
  • Cost-effective: While there is an initial cost associated with purchasing herbicides, the long-term benefits of improved weed control and increased crop yields can outweigh the costs.

Overall, herbicides are an important tool for Kenyan farmers to improve crop yields and reduce labor costs. When used properly and in combination with other good agronomic practices, herbicides can help farmers achieve better harvests and improve their livelihoods.

tractor spraying herbicide
tractor spraying herbicide

Challenges Facing Herbicide Use in Kenya

The use of herbicides in Kenya has been increasing in recent years due to various factors such as a shortage of labor and the complexity of farming operations. However, there are also several challenges that farmers face when it comes to herbicide use, which can limit their effectiveness and impact. The following are some of the main challenges facing herbicide use in Kenya:

  • High Cost: One of the major challenges facing herbicide use in Kenya is the high cost of these products. Many small-scale farmers cannot afford to purchase herbicides, which limits their ability to control weeds effectively. Additionally, the cost of herbicides can vary widely depending on the brand and type, making it difficult for farmers to choose the most cost-effective option.
  • Limited Availability: Another challenge facing herbicide use in Kenya is the limited availability of these products. Many rural areas do not have access to herbicides, which makes it difficult for farmers in these areas to control weeds effectively. Additionally, some herbicides may not be registered for use in Kenya, which limits the options available to farmers.
  • Lack of Knowledge: Many farmers in Kenya may not have sufficient knowledge about herbicide use, including the proper application rates and timing. This can lead to ineffective weed control and even damage to crops. Additionally, some farmers may not be aware of the potential risks associated with herbicide use, such as environmental damage and health risks.
  • Resistance: The overuse of herbicides can lead to the development of resistance in weeds, which can make these products less effective over time. This can be a major challenge for farmers who rely on herbicides for weed control, as they may need to switch to alternative products or methods to maintain effective weed control.
  • Environmental Concerns: Herbicide use can have negative impacts on the environment, including contamination of water sources and damage to non-target organisms. This can be a major concern for farmers who want to minimize their impact on the environment and maintain sustainable farming practices.

Overall, while herbicides can be an effective tool for weed control in Kenya, there are also several challenges that farmers face when it comes to their use. Addressing these challenges will be important for improving the effectiveness and sustainability of herbicide use in the country.

Also Read: Types Of Herbicides In Kenya

Sustainable herbicide use in Kenya

The use of herbicides by small-scale farmers in Kenya has been a topic of debate for many years. While herbicides have proven to be effective in controlling weeds and increasing crop yields, their use can have negative impacts on human health and the environment if not used sustainably.

There are several ways in which farmers can use herbicides sustainably. One way is to use herbicides only when necessary and in the correct amounts. Overuse or misuse of herbicides can lead to herbicide resistance, soil degradation, and contamination of water sources. Farmers can also use herbicides that have a low toxicity level and are biodegradable to minimize their impact on the environment.

Another way to promote sustainable herbicide use is through proper application techniques. Farmers should follow the recommended application rates and use proper equipment to ensure that the herbicide is applied evenly and does not drift to neighboring crops or water sources. Farmers should also wear protective clothing and follow safety guidelines to minimize their exposure to the herbicide.

In addition, farmers can adopt integrated pest management (IPM) practices to reduce their reliance on herbicides. IPM involves using a combination of cultural, biological, and chemical methods to control pests and weeds. This approach can reduce the use of herbicides and promote a more sustainable farming system.

Overall, sustainable herbicide use in Kenya is crucial for protecting human health, the environment, and the long-term viability of the farming system. By following recommended practices and adopting IPM, farmers can effectively control weeds while minimizing their impact on the environment.


The use of herbicides in Kenya has been gaining momentum in recent years due to the many benefits they offer to farmers. Research has shown that the use of herbicides can lead to significant improvements in crop yields, reduce physical labor in fields, and save farmers time and money. In fact, studies have shown that the adoption of herbicides in African maize fields can lead to increased production due to improved weed control.

While the use of herbicides has many benefits, it is important to note that their use must be responsible and sustainable. Farmers must be properly trained in the use of herbicides to ensure that they are used safely and effectively. Additionally, farmers must be aware of the potential risks associated with herbicide use, such as the impact on local pollinators and the environment.

Overall, the use of herbicides in Kenya has the potential to greatly benefit farmers and increase crop yields. However, it is important that their use is responsible and sustainable to ensure that the benefits are not outweighed by any negative impacts.

Also Read: Glyphosate Herbicide Products In Kenya

Sources: De Groote, Hugo, Lucy Wangare, and Fred Kanampiu. “Evaluating the use of herbicide-coated imidazolinone-resistant (IR) maize seeds to control Striga in farmers’ fields in Kenya.” Crop Protection 26.10 (2007): 1496-1506. Link: https://www.sciencedirect.com/science/article/pii/S0261219407000026

Tabe Ojong, Martin Paul, et al. “Action on Invasive Species: Control strategies of Parthenium hysterophorus L. on smallholder farms in Kenya.” Environmental management (2022): 1-10. Link: https://link.springer.com/article/10.1007/s00267-021-01577-5

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John Kamau is a highly experienced agriculture expert based in Kenya. He holds a degree in Agriculture from the University of Nairobi and has over 15 years of experience in the field. Throughout his career, John has been committed to promoting sustainable agriculture practices in Kenya. He has worked with small-scale farmers in rural communities to improve their crop yields, implement irrigation systems, and adopt environmentally friendly farming practices. John is also an expert in the use of technology in agriculture. He has worked with organizations to develop mobile applications that help farmers access information about weather patterns, market prices, and best practices for crop management. In addition to his work in Kenya, John has also been involved in agricultural projects in other African countries, including Tanzania and Uganda. He has served as a consultant for the United Nations Food and Agriculture Organization and has been recognized for his work with numerous awards.


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