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Welcome to the WeevilTrak℠ blog, offering you updates about annual bluegrass weevil (ABW) from industry leading researchers. This blog will provide you with timely ABW activity across the north east as well as advice on scouting and controlling them using the Optimum Control Strategy.

Latest Posts

Where has all the damage come from?

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.

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ABW Season wrapping up in North Carolina

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.

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Biological and biorational control options for ABW for resistance management

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.

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Populations Winding Down and Surprise, Surprise: Damage to Bentgrass and Greens

The recent weather pattern has been brutal in many locations of the Mid-Atlantic. We experienced hot days and warm nights with very high evapotranspiration rates throughout the month of July. Then, the last week of July brought heavy rainfall, humidity and perfect weather patterns for brown patch and Pythium diseases.

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For resistant ABW (or any ABW): consider switching to larvae as the main, or only, target

Many people will argue that using adulticides is still necessary to at least reduce the spread of the larval stages. However, what about adulticides against populations with lower resistance levels, where these adulticides may still give around 40 percent or even higher control?

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Keep Up the ABW Monitoring in North Carolina

Good news for anyone monitoring for annual bluegrass weevils (ABW) in the northwestern part of North Carolina: adult activity is minimal, and little to no ABW damage has been reported so far in 2016. But with warmer weather still on its way, it's important to continue monitoring for activity in the coming weeks.

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Where Have all the Weevils Gone?

The 2016 ABW season was (and still possibly is) lined up to be a very challenging year, especially with the earlier-than-normal start to the season, a couple of cool stretches in spring and now with extreme drought conditions persisting across the region. With the stop-go egg laying patterns, larval populations have become spread out over time, leading to confusion in the timing of sprays, or even the determination of which generation is present.

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Summer Challenges

While most superintendents in New England appear to have gotten through the first generation of weevil activity without too much trouble, the potential is still there for some ugly surprises this summer.

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ABW are all over the place

The 2016 annual bluegrass weevil (ABW) season has been all over the place since it began.

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ABW are Completing the First Generation in Southern New England

Annual bluegrass weevils (ABW) are completing the first generation in southern New England even as I type. We are beginning to see new adults at most of our study sites, and they will be mating and reproducing within the next week or two.

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