What characterizes a non-selective herbicide?

A non-selective herbicide is characterized by its ability to kill or damage all types of plants when applied at sufficient rates. This means that it does not differentiate between desirable plants and undesirable plants, effectively eradicating any vegetation in the treated area. Such herbicides are often used in situations where complete vegetation removal is desired, such as clearing a construction site or managing weeds in certain non-crop areas.

The remaining choices describe characteristics that do not align with non-selective herbicides. For instance, claiming that a non-selective herbicide only targets specific types of weeds or selectively kills perennial plants contradicts the fundamental nature of these herbicides. Additionally, stating that they are harmless to all plant species overlooks their broad-spectrum activity, which can lead to unintended damage to surrounding flora. Understanding the broad impact of non-selective herbicides is essential for safe and effective use in various agricultural and landscaping practices.