Before selecting a pesticide product, what is the most important factor to determine?

• A. Target pest identity
• B. Weather forecast
• C. Soil type
• D. Plant height

Answer: (A)

The most important thing to determine is exactly which pest you’re trying to control. Pesticide products are designed and labeled to target specific pests, and choosing one that lists your pest ensures the product will be effective and safe to use on the intended site. If you misidentify the pest, you may pick an ineffective product, waste money, risk harming non-target organisms, and potentially contribute to resistance.

Weather, soil type, and plant height matter for how and when you apply a product (timing, drift, movement, application method), but they don’t determine whether a given product will work for the pest.