Which type of pesticide formulation is usually less harmful to beneficial insects when used appropriately?

Granules are typically less harmful to beneficial insects when used appropriately due to several factors related to their formulation and application methods. Granular pesticides are solid particles that can be applied to the soil or as a surface application. They offer a targeted delivery system that allows for more controlled application, reducing the likelihood of drift and minimizing exposure to non-target organisms, including beneficial insects.

The physical nature of granules also means they require moisture for activation, which can prevent immediate toxicity from overspray or non-target contact. When applied correctly, they can have localized effects near the treatment area, thereby sparing beneficial insects that inhabit other areas.

In contrast, other formulations like emulsifiable concentrates tend to be more volatile and can drift more easily, increasing the chances of harming beneficial insects. Wettable powders require mixing with water and can also create aerosols during application, similarly risking non-target exposure. Microencapsulated formulations can pose risks during the initial release phase, potentially affecting nearby beneficial organisms in the environment.

Therefore, when considering the application process and the potential implications for beneficial insect populations, granules present a safer option in appropriate circumstances.