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.

Latest Posts: Dr. Albrecht Koppenhöfer

ABW season finale and another FAW heads-up

Things should be really slowing down with annual bluegrass weevils now. But it looks like there is still some scattered ABW activity in New Jersey right now.

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ABW still causing some trouble in here and there central and northern New Jersey

Annual bluegrass weevils (ABW) are still rearing their heads here and there in New Jersey. The spottiness of ABW is pretty normal in summer, especially this late in the season.

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ABW stages all over the place in central and northern New Jersey

With the warm weather we have had in the region, annual bluegrass weevil (ABW) stages and generations have continued to advance quickly.

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In central and northern New Jersey ABW spring generation close to complete for 2021

In central and northern New Jersey, it is time to scout for and, if necessary, treat against the adults of the annual bluegrass weevil spring generation provided the population is still susceptible to any of the adulticides.

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Time for larvicides vs mid-size larvae in central and northern New Jersey

In central and northern New Jersey, the annual bluegrass weevil (ABW) populations are moving along with larvae now present up to the 4th stage, exceptionally even 5th stage.

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The time for ABW adulticide applications is around the corner in central and northern New Jersey

After a rather warm spring thus far, annual bluegrass weevil activity seems to have slowed down a bit with somewhat cooler weather more recently. But the optimal timing for adulticide applications is quickly approaching in central and northern New Jersey.

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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 larvae of 1st summer generation: Time to scout for and control if necessary

Annual bluegrass weevil populations in central and northern New Jersey currently consist of all stages from spring generation adults through large larvae of the 1st summer generation. Scouting for the large larvae should be ongoing. Applications should then be made to the affected areas as soon as significant larval populations are detected.

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Time to control all larval stages: ABW stages likely to be all over the place

Yes, Steve McDonald is right: it is a mess! The crazy weather patterns must have the annual bluegrass weevils (ABWs) about as confused as you.

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Timing adulticides was a shot in the dark: better to rely on larvicides this spring

At Pine Brook Golf Course, annual bluegrass weevil adult numbers determined by soaping have been low all spring (no higher than 0.67 per 1 ft.2 on the fairway).

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