True or False: Paraquat, diuron, and bromacil are examples of selective herbicides.

The assertion that paraquat, diuron, and bromacil are examples of selective herbicides is false. Selective herbicides are designed to target specific plants while leaving others unharmed. Paraquat is a non-selective herbicide, meaning it kills a wide range of plants, including both weeds and desirable crops. This characteristic makes it unsuitable for use in situations where some vegetation must be preserved.

Diuron is often considered a selective herbicide as it is primarily used for controlling broadleaf weeds and certain grasses without significantly harming established crops. However, it can have some non-selective properties depending on the application context.

Bromacil is another herbicide that tends to target a variety of plants, making it more non-selective compared to diuron, although it does have some effectiveness against specific types of weeds in certain applications.

In summary, none of the three products listed—paraquat, diuron, or bromacil—qualifies as a purely selective herbicide in all situations, which is the basis for determining the statement as false.