For sycamore lace bug management, which applications may be applied to the undersides of leaves?

For sycamore lace bug management, which applications may be applied to the undersides of leaves?

• A. Insecticidal soap, horticultural oil, or contact insecticides may be applied to undersides of leaves.
• B. Only systemic pesticides are effective.
• C. No treatment is possible.
• D. Biological controls alone are sufficient.

Answer: (A)

Lace bugs feed on the underside of leaves, so effective control relies on products that reach that hidden surface. Insecticidal soap and horticultural oil are contact formulations that spread to the underside and can smother or disrupt the bugs there. Likewise, other contact insecticides labeled for lace bugs will contact the insects on the lower leaf surface when applied to the undersides. Systemic pesticides move through the plant, but they don’t provide the same rapid, direct contact with pests on the leaf underside, and they may not achieve quick suppression. Biological controls can help, but they usually don’t provide enough control on their own in landscapes. No treatment isn’t appropriate because there are viable options that target the site where the pests live. Therefore, insecticidal soap, horticultural oil, or compatible contact insecticides applied to the undersides are the best options.

Lace bugs feed on the underside of leaves, so effective control relies on products that reach that hidden surface. Insecticidal soap and horticultural oil are contact formulations that spread to the underside and can smother or disrupt the bugs there. Likewise, other contact insecticides labeled for lace bugs will contact the insects on the lower leaf surface when applied to the undersides. Systemic pesticides move through the plant, but they don’t provide the same rapid, direct contact with pests on the leaf underside, and they may not achieve quick suppression. Biological controls can help, but they usually don’t provide enough control on their own in landscapes. No treatment isn’t appropriate because there are viable options that target the site where the pests live. Therefore, insecticidal soap, horticultural oil, or compatible contact insecticides applied to the undersides are the best options.