New York State Department of Environmental Conservation (NYSDEC) Pesticide Practice Exam

The three main categories of pesticides are herbicides, insecticides, and fungicides. This classification is foundational in pest management, as each category specifically targets different types of pests that threaten crops, plants, and structures.

Herbicides are designed to control unwanted plants or weeds, which can compete with crops for nutrients, water, and light. Insecticides target insects that may harm crops, animals, or humans, providing protection against pest-related damage. Fungicides are utilized to manage fungal diseases that can infect plants, leading to significant agricultural losses.

These categories encompass the most commonly used chemical controls in agricultural practices and are crucial for effective pest management strategies. Understanding the distinctions among these categories helps pesticide applicators select the appropriate products based on the specific challenges they face in pest control.

The other options, while they mention relevant elements of pest control, do not encompass the three main categories recognized by regulatory agencies and pest management professionals.