Which management practice minimizes environmental impact when controlling cutworms in turf?

Which management practice minimizes environmental impact when controlling cutworms in turf?

• A. Use a resistant endophyte-enhanced variety of fescue or ryegrass.
• B. Mow turf as short as possible, below 1 inch.
• C. Apply broad-spectrum insecticides weekly.
• D. Remove all lawn vegetation.

Answer: (A)

Harnessing plant resistance through endophyte-enhanced grasses is the best way to minimize environmental impact when managing cutworms. Fescue or ryegrass varieties with fungal endophytes contain compounds that deter feeding or reduce larval survival, so the turf itself helps keep pest pressure down without relying on pesticides. This means fewer chemical applications, which protects beneficial insects, reduces runoff and groundwater contamination, and supports a healthier ecosystem around the turf. Keep in mind that maintaining healthy turf through proper mowing, irrigation, and fertility is still important, but using endophyte-enhanced varieties targets the pest at the plant level, providing a preventive, low-impact approach. In contrast, mowing turf very short stresses the grass and can make it more vulnerable to pests and diseases; using broad-spectrum insecticides weekly harms non-target organisms and can lead to resistance and environmental harm; removing all lawn vegetation eliminates habitat and is not a practical or sustainable solution.

Harnessing plant resistance through endophyte-enhanced grasses is the best way to minimize environmental impact when managing cutworms. Fescue or ryegrass varieties with fungal endophytes contain compounds that deter feeding or reduce larval survival, so the turf itself helps keep pest pressure down without relying on pesticides. This means fewer chemical applications, which protects beneficial insects, reduces runoff and groundwater contamination, and supports a healthier ecosystem around the turf.

Keep in mind that maintaining healthy turf through proper mowing, irrigation, and fertility is still important, but using endophyte-enhanced varieties targets the pest at the plant level, providing a preventive, low-impact approach. In contrast, mowing turf very short stresses the grass and can make it more vulnerable to pests and diseases; using broad-spectrum insecticides weekly harms non-target organisms and can lead to resistance and environmental harm; removing all lawn vegetation eliminates habitat and is not a practical or sustainable solution.