Which of the following best describes a selective herbicide used in turf management?

• A. It targets broadleaf weeds while sparing grasses
• B. It targets grasses while sparing broadleaf weeds
• C. It kills all plants
• D. It prevents seed germination only

Answer: (A)

Selective herbicides in turf management are designed to kill certain weeds while leaving the turfgrass intact. In lawns, the goal is to curb broadleaf weeds such as dandelions or clover without injuring the grass you’re trying to maintain. This works because grasses and broadleaf plants have different physiology and metabolic pathways, which allows a chemical to disrupt processes that are more critical in broadleaf weeds than in grasses. A classic example is a broadleaf-selective herbicide that acts like a hormone disruptor in weeds, causing abnormal growth and death in broadleaf plants while the turfgrass remains relatively unaffected. So, the best description is that it targets broadleaf weeds while sparing grasses. If a product killed all plants, it would be non-selective and ruin the lawn; if it only prevented seed germination, it would be a pre-emergent rather than a post-emergent selective treatment; and a product that targets grasses would harm the turf itself.