Which statement best summarizes Penoxsulam's non-target organism toxicity?

• A. It is highly toxic to mammals.
• B. It is moderately toxic to aquatic invertebrates.
• C. It is extremely toxic to bees.
• D. It is practically not toxic to fish, birds, and mollusks.

Answer: (D)

Non-target organism toxicity looks at how a pesticide affects animals and other organisms that aren’t the intended pests. Penoxsulam, as an aquatic herbicide, has toxicity data showing very low acute effects on common non-target wildlife—fish, birds, and mollusks—at labeled use rates. That means it is practically not toxic to these groups, which is why this option best summarizes its non-target toxicity. The other statements imply hazards not supported by the data or label—its mammalian toxicity isn’t high, it isn’t described as extremely toxic to bees, and it isn’t characterized as moderately toxic to aquatic invertebrates. Following label directions and minimizing drift further help keep exposure to non-target organisms very low.