QAL Laws & Regulation Practice Exam

Disking weeds in a field is an example of mechanical control. This method involves physical actions taken to manage pest populations, including weeds. By using equipment such as a disk, the farmer disrupts the growth and spread of weeds, thereby reducing their competition with crops. Mechanical control is a direct intervention that physically alters the environment or pest population and can be effective for managing weeds without relying on chemicals or biological agents.

In contrast, cultural control involves changing farming practices to enhance crop growth and reduce pest problems, which does not apply to the act of disking. Biological control refers to the use of natural predators or diseases to manage pest populations, and is distinct from the physical removal of weeds through disking. Chemical control entails the application of herbicides or pesticides to eliminate pests, which is not the method employed when using a disk. Therefore, the action of disking aligns specifically with the definition of mechanical control in pest management practices.