To prevent pesticide phytotoxicity, which practice is recommended?

• A. Apply the product early in the morning for best uptake.
• B. Spray the entire bed to ensure uniform coverage.
• C. Use the maximum label rate to ensure efficacy.
• D. Carefully check the pesticide label for sensitive plants; test any new chemical on a few plants before treating a larger area.

Answer: (D)

Preventing pesticide phytotoxicity hinges on confirming that a product is safe for the plants you’re treating by following the label. The label lists which plants are sensitive and the conditions that can cause injury, so testing any new chemical or application on a few plants before treating a larger area lets you see if there’s harm under your specific conditions. If you don’t see symptoms, you can proceed with the labeled rate and precautions; if injury appears, you avoid that product or adjust accordingly. The other options don’t address this safety check: applying at a certain time may reduce some risks but doesn’t guarantee safety; spraying the entire bed doesn’t detect plant sensitivity and can spread injury; and using the maximum rate increases the chance of phytotoxicity rather than preventing it.