What is an example of a biological control method?

Introducing natural enemies to control pest populations is a prime example of a biological control method. This strategy relies on the use of naturally occurring predators, parasites, or pathogens that can effectively reduce pest numbers without the need for synthetic chemicals. The goal of biological control is to restore the natural balance in ecosystems by leveraging the interactions between organisms, thereby minimizing reliance on chemical pesticides.

In agricultural practices, this method can involve the introduction of beneficial insects such as ladybugs or lacewings, which prey on aphids, or the use of parasitic wasps that target specific pest species. By utilizing these natural enemies, farmers can create a sustainable pest management solution that reduces the adverse effects of chemical pesticides on the environment and human health.

The other options represent different approaches to pest management but do not qualify as biological control methods. Using chemical pesticides focuses on synthetic chemicals to kill pests, increasing herbicide use targets weeds rather than pests, and applying fertilizers is aimed at enhancing plant growth, which is unrelated to direct pest control.