Annual bluegrass weevil activity(ABW) in North Carolina has wrapped up for the 2016 season. Even areas that saw some moderate late-season (late August) damage, have little to no adult activity this week. Now that we have sampled for two full years at multiple sites and have visited 30+ different golf courses to get an idea of ABW distribution and abundance in NC, we can start to get a feel for how this insect behaves and develops in the southern US. We have summarized observations and comparisons for the 2015, 2016 ABW sampling seasons in North Carolina below.
- August 24, 2016
- by Dr. Ben McGraw
In my last Weevil Trak blog ( "Where have all the weevils gone?" ), I lamented on the fact that I might be out of a job since we had come to the end of July, and I had not seen the kind of destruction that we would expect with the challenging spring weather. Since that time, I have received a steady amount of calls and reports of widespread damage.
It looks like the ABW season is just about finished for 2016 in North Carolina. In the Beech Mountain and Banner Elk areas, ABW activity has declined slowly over the past few weeks and no damage has been reported since July. ABWs were active for a longer time period this year compared to what was observed in 2015.
Given the severity of insecticide resistance issues with ABW and the limited number of synthetic insecticides that still work against resistant, especially highly resistant, ABW populations, it is paramount to adopt good insecticide resistance practices.