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: March 2021

March 2021 WeevilTrak Update

I have been looking for annual bluegrass weevil (ABW) adults every day since early March. On a few of the warmest days of the year so far, I have found low densities throughout Maryland, Delaware, Southeastern Pennsylvania and New Jersey. These densities are very low and in my opinion, they do not warrant insecticide applications. I encourage patience.

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Early and alarming ABW activity seen in Virginia – Stage 1

Growing degree days may not have accumulated that much in Virginia, but other indications are suggesting that a first spray application to target ABW adults may be necessary in Virginia.

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WeevilTrak Update March 22, 2021

Nothing signals the start of the annual bluegrass weevil season more than sitting down to write the opening WeevilTrak blog. This year is looking as though it will have an early start as temperatures during the week of March 22 should force some of the first wave of adults out of overwintering.

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Getting ready to track ABW: methods for predicting activity and estimating adult populations

February in New Jersey was certainly snowy and seemed cold, but temperature-wise it was actually spot-on average. Since we have not had a lot of extreme temperatures, neither on the lower nor the higher end, the weevils should certainly be just fine, ready to get going soon.

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ABW tracking has commenced in Virginia – very little activity so far

As the week of March 6 has brought some warm weather to Virginia ABW have started to appear slowly.

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