What do REI and PHI on pesticide labels indicate?

What do REI and PHI on pesticide labels indicate?

• A. They indicate restricted-entry interval and pre-harvest interval
• B. They indicate the pesticide's price
• C. They indicate the production batch number
• D. They indicate the recommended mowing height

Answer: (A)

REI and PHI are timing restrictions on pesticide labels that protect people and the food supply. The restricted-entry interval is the waiting period after a pesticide is applied during which entry to the treated area is limited or prohibited unless you wear the appropriate PPE. The pre-harvest interval is the minimum time that must pass after application before the crop can be harvested or sold, to ensure residues are at acceptable levels. In turf work, REI matters for anyone entering sprayed areas (mowing, overseeding, maintenance) soon after application, while PHI applies to crops or sod production and to any situation where the treated material would be harvested or consumed. These indicators are not about price, batch numbers, or mowing height.

REI and PHI are timing restrictions on pesticide labels that protect people and the food supply. The restricted-entry interval is the waiting period after a pesticide is applied during which entry to the treated area is limited or prohibited unless you wear the appropriate PPE. The pre-harvest interval is the minimum time that must pass after application before the crop can be harvested or sold, to ensure residues are at acceptable levels. In turf work, REI matters for anyone entering sprayed areas (mowing, overseeding, maintenance) soon after application, while PHI applies to crops or sod production and to any situation where the treated material would be harvested or consumed. These indicators are not about price, batch numbers, or mowing height.