MDARD Michigan Core Pesticide Applicator Practice Exam

Which type of formulation is known for providing a slow release of active ingredients?

1. Microencapsulated

2. Liquid emulsifiable concentrate

3. Granular bait

4. Aerosol

The correct answer is: Microencapsulated

The type of formulation known for providing a slow release of active ingredients is microencapsulated formulations. These formulations encapsulate the pesticide active ingredients in tiny polymeric capsules. This encapsulation allows the active ingredients to be released gradually over time, rather than rapidly, which can help achieve prolonged effectiveness and minimize the risk of leaching or degradation. Microencapsulated products are particularly useful in pest management because they can reduce the frequency of applications, effectively controlling pests while reducing the potential for non-target exposure and environmental impact. This slow-release mechanism can also enhance the stability of the active ingredients, making them more effective when they are needed over an extended period. Other formulations, such as liquid emulsifiable concentrates, granular baits, and aerosols, do not typically provide the same slow-release characteristics. Liquid emulsifiable concentrates are designed for immediate dispersion upon application; granular baits usually attract pests quickly; and aerosols deliver product in a quick and dispersive manner, which is not conducive to slow release.