Spinosad is a good choice for controlling Sawfly as it is a low risk, bio rational chemical that achieves good control of caterpillars.

• A. True
• B. Not always
• C. Depends on pest
• D. False

Answer: (D)

Spinosad is valued as a bio-rational insecticide because it has relatively low mammalian toxicity and breaks down fairly quickly, while still being effective against many chewing pests. It works by overstimulating the insect nervous system after contact or ingestion, and it is particularly reliable against many caterpillars.

However, sawflies are not caterpillars; they are a different group of chewing pests with varying susceptibility to spinosad. The level of control spinosad provides against sawflies can be inconsistent depending on the species and life stage, and label guidance or field performance may not guarantee good results. Because of this variability, labeling spinosad as a universally good choice for sawflies, simply because it’s low risk and effective on caterpillars, isn’t reliable.

So the statement isn’t considered universally true for sawflies. Control depends on the specific pest and situation, and alternative options may be more effective in some cases.