To avoid major bee kills, when should pesticides be applied?

To avoid major bee kills, when should pesticides be applied?

• A. Apply pesticides in the very late afternoon or night
• B. Apply pesticides at noon
• C. Apply pesticides early in the morning before sunrise
• D. Apply pesticides in the late evening after dusk

Answer: (A)

The main idea here is to time pesticide use when bees aren’t active, to reduce their exposure. Bees spend the day foraging on flowers, so applying pesticides while they’re out gathering nectar increases the risk of harming them or contaminating the flowers they visit. By spraying in the very late afternoon or at night, most foraging bees have returned to the hive and are not out visiting blooms, which greatly lowers the chance that bees encounter the pesticide. Midday spraying is discouraged because bees are most active then and will encounter the pesticide more readily. Spraying very early in the morning before sunrise is still before bees become active, but in practice late afternoon or night is often recommended because it aligns with when bees are least likely to be foraging and when spray drift is less likely to affect nearby flowers. Spraying late evening after dusk is essentially nighttime, which also aligns with reduced bee activity, but the broad window of late afternoon or night best captures the safe period.

The main idea here is to time pesticide use when bees aren’t active, to reduce their exposure. Bees spend the day foraging on flowers, so applying pesticides while they’re out gathering nectar increases the risk of harming them or contaminating the flowers they visit. By spraying in the very late afternoon or at night, most foraging bees have returned to the hive and are not out visiting blooms, which greatly lowers the chance that bees encounter the pesticide.

Midday spraying is discouraged because bees are most active then and will encounter the pesticide more readily. Spraying very early in the morning before sunrise is still before bees become active, but in practice late afternoon or night is often recommended because it aligns with when bees are least likely to be foraging and when spray drift is less likely to affect nearby flowers. Spraying late evening after dusk is essentially nighttime, which also aligns with reduced bee activity, but the broad window of late afternoon or night best captures the safe period.