A microencapsulated (CS) pesticide provides longer residual control compared to an EC of the same active ingredient primarily because:
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AThe capsule wall increases the toxicity of the active ingredient
BThe controlled-release capsules slowly release the active ingredient over time
CMicroencapsulation increases the water solubility, allowing deeper soil penetration
DThe polymer coating prevents UV degradation of the active ingredient
✓ Correct answer: B. The controlled-release capsules slowly release the active ingredient over timeThe polymer capsule walls in microencapsulated formulations create a time-release mechanism, allowing the active ingredient to diffuse out slowly rather than all at once. This extends the period of pest control activity.
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Theory