Friday, June 8, 2012
At this time, management options for billbugs are limited to trichlorfon (Dylox), carbaryl (Sevin), or one of the faster-acting neonicotinyls; chlothianidin (Arena) or thiamethoxam (Meridian). Application of these materials should be followed by irrigation (1/4”) or rainfall to wash the applied material into the activity zone of billbug larvae. Over the long term, it may be advisable to renovate susceptible areas to endophyte-enhanced turfgrasses such as perennial ryegrass or tall fescue where agronomically feasible.
Doug Richmond and Tim Gibb
Turfgrass Research and Extension Entomologists