Which class of insecticide is commonly used in forestry practices?

The use of pyrethroids in forestry practices is common due to their effectiveness and relatively low toxicity to non-target species compared to some other insecticides. Pyrethroids are synthetic chemicals modeled after naturally occurring pyrethrins found in chrysanthemum flowers. They work by disrupting the nervous system of insects, leading to paralysis and death.

In forestry, pyrethroids are valued for their effectiveness against a wide range of pests that can damage trees, as well as their persistence on treated surfaces which enhances their protective qualities. Additionally, they generally possess lower environmental persistence and toxicity to birds and mammals than organophosphates or carbamates, making them a preferred choice in many integrated pest management plans.

While the other classes of insecticides, such as organophosphates, neonicotinoids, and carbamates, have utility in specific situations, they can often pose higher risks to non-target species and the environment. This consideration has led to a greater focus on the use of pyrethroids in forestry applications to balance pest control needs with ecological safety.