What is one method of mechanical control for managing insect pests?

Hand-picking or using traps is a method of mechanical control for managing insect pests because it involves directly removing pests from the environment without the use of chemicals. This approach is often very effective for managing small infestations or specific pests. Hand-picking allows for the selective removal of pests, minimizing harm to beneficial insects and the surrounding ecosystem.

Using traps can also capture a variety of pests, and different types of traps can target different species. This method is particularly beneficial for gardeners and those managing ornamental plants, where the focus may be on maintaining plant health without resorting to chemical interventions.

In contrast, the other methods listed, such as using chemical sprays or soil cultivation, typically involve more complex interactions with the pest population and the environment and may not align with the principles of mechanical control, which emphasizes physical methods rather than chemical or biological approaches. While plant rotation is a valuable pest management strategy, it relates more to minimizing pest populations through changes in crop systems rather than direct mechanical interaction with pests.