Tuesday, July 7, 2015
Management of white grubs should be based on previous history as well as the functional and aesthetic characteristics of the site. On high maintenance turf, tolerance for damage may be low and a preventive white grub management approach may be warranted. Conversely, minor damage to low maintenance turf may require no remediation at all aside from adequate moisture and fertility to help the turf recover. The chart below represents the relative efficacy of all white grub insecticides labeled for use in turf in relation to application timing.
The chart is intended to help turfgrass managers understand the insecticide choices available to them and help them make the best white grub control decisions at any given point in the growing season. Insecticide products that do not contain one of the active ingredients (chemical names) listed on this chart will not usually provide good grub control. Keep in mind that the active ingredients listed on the left side of the chart may be formulated and distributed under various trade names aside from those listed on the right. As always, remember to read and follow directions on the label of any insecticide product.
Associate Professor and Turfgrass Entomology Extension Specialist