If a label lists a PHI of seven days, what does this mean for harvest timing?

• A. Harvest must be delayed at least seven days after application.
• B. Harvest must occur within seven days after application.
• C. You can harvest immediately and ignore the PHI.
• D. PHI applies only to storage.

Answer: (A)

PHI stands for Pre-Harvest Interval. It is the minimum number of days that must pass after a pesticide is applied before you can harvest the crop. If a label lists seven days, you must wait at least seven days after the application before harvesting. This waiting period helps ensure pesticide residues stay within legal and safe limits and that you’re following the label directions. Harvesting earlier would violate the label and could create unsafe residues. The PHI governs harvest timing, not storage, and you can’t harvest immediately or within that seven-day window.