WeevilTrak Blog | GreenCast | Syngenta
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.

Archive: August 2016

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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