Pest ControlAgriculture is often crucial to the economies of lower-income nations. In Sub-Saharan Africa, more than 60% of the population is smallholding farmers and about 23% of the GDP comes from agriculture. Because of the importance of this industry, pest control can become a major issue in a lot of countries.

Influence of Pesticides

When pests are not properly handled, produce is damaged, which leads to reduced yields and profits. If crops are drastically damaged, it can lead to a decrease in food supply and an increase in prices. When pesticides were first introduced to farmers in Africa, it seemed to be a quick and easy form of pest control to fix their infestation problems. Pesticides increased yields, which led to higher household incomes and more trading. However, pesticides present their own set of obstacles. When mishandled, pesticides can be very dangerous. Many farmers lack the proper knowledge and equipment to safely administer the chemicals. This can cause health problems among farmers, contaminate soil and water sources, and result in pesticide-resistant insects.

Pesticidal Pollution in Kenya

A study conducted in 2016 that tested the water quality of Lake Victoria in Kenya revealed the negative impact pesticides had on the environment in the area.In May 1999, the European Union imposed a fish import ban on all fish from Lake Victoria when it was discovered 0rganochlorine pesticides were being used to fish in the lake. This ban resulted in an estimated $300 million loss for Kenya.

Organochlorine pesticides are mostly banned in high-income nations, but they are still used illegally in East Africa. Sometimes organochlorine pesticides are also used in East Africa for “public health vector control,” meaning to control the population of pests that spread diseases. The continued use of these pesticides is cited as a reason why pesticidal pollution was still found in Lake Victoria in 2016. Testing the water revealed that the pesticide concentrations in the lake were higher during the rainy seasons compared to the dry seasons. This led to the conclusion that the pesticides were entering the lake from contaminated runoff from surrounding farms. Those conducting the study concluded that the lake contaminations presented an immediate danger to the animals and humans relying on the lake as a food and water supply, due to the pesticide bioaccumulation entering the food chain.

Integrated Pest Management (IPM)

Cases such as Lake Victoria’s are why the government, academic and public agricultural agencies have been promoting the use of IPM. IPM is a system that aims to decrease the need for pesticides by “incorporating non-chemical techniques, such as pruning strategies or soil amendments that make plants less inviting to pests, using insect traps that monitor pest populations so growers can be more precise with chemical sprays or adopting pest-resistant crop varieties.” The UN Food and Agriculture Organization (FAO) and the Organization for Economic Co-operation and Development (OECD) have all supported the IPM process. Still, IMP has been slower to spread to the low-income nations of the world.

Whereas pesticides are made to be harmful and heavy-handed, IPM requires more finesse and care. IPM requires farmers to possess significant pest management knowledge in order to be effective. They must closely monitor their crops and keep detailed records. This is a difficult change for a farmer to make, especially when failure can have dire consequences, as they rely on their farms for food and income. However, with proper training and knowledge, IPM can present a good alternative for pest control to farmers who lack easy access to pesticides or can’t afford them.

The FAO has been using the Farmer Field School program to try to teach IPM and other sustainable farming practices to farmers in low-income nations. Programs like these are likely the most effective way to teach farmers about alternatives to pesticides. They may be able to help farmers in low-income nations find the resources necessary for safe and successful pest control.

Agriculture is often very important to the economies of lower-income nations. Improper use of pesticides, due to a lack of resources, can end up negatively impacting the environment in those areas where people are trying to grow crops. Programs like the Farmer Field School Program may be able to help lower-income nations transition to safer pesticide methods, such as IPM.

– Lindsey Shinkle
Photo: Flickr