How do pre-emergence herbicides work?

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Prepare for the Turfgrass Pest Management Category 3A exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam in the best way possible!

Multiple Choice

How do pre-emergence herbicides work?

Explanation:
Pre-emergence herbicides are applied to the soil before weed seeds germinate, and their main job is to prevent those seeds from germinating or emerging. They act from within the soil profile, creating a barrier or altering the seedling’s early development so the weed never gets established. This is different from products that kill weeds after they have already emerged, or from actions that disrupt photosynthesis in established turf. So the best description is that these herbicides suppress weed germination, keeping weeds from popping up in the first place.

Pre-emergence herbicides are applied to the soil before weed seeds germinate, and their main job is to prevent those seeds from germinating or emerging. They act from within the soil profile, creating a barrier or altering the seedling’s early development so the weed never gets established. This is different from products that kill weeds after they have already emerged, or from actions that disrupt photosynthesis in established turf. So the best description is that these herbicides suppress weed germination, keeping weeds from popping up in the first place.

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