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: May 2018

After the rain, comes the damage

The amount of rain western North Carolina has received the past month is record-breaking. And as we've seen in the past, when the rain starts to let up, annual bluegrass weevil damage appears almost immediately.

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Annual bluegrass weevils - Here they come!

After a very cool spring, the annual bluegrass weevils (ABW) are finally beginning to show up in turf samples from golf courses in southern New England.

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Start building an ark

We are rapidly advancing through the first generation in Pennsylvania. Each week seems to bring a new WeevilTrak stage—and a ton of rain. Today is May 23 and we don’t have any rain forecasted in central Pennsylvania, which will break a nine day streak. The warm temperatures that are bringing daily growing degree day Base 50 accumulations in the high teens, plus the ample moisture, have weevils loving life.

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If you haven’t already, brace yourself

It is so wet out there. So far in the month of May, we are more than three inches above the average amount of precipitation at multiple sampling sites—and they are calling for more rain next week! A lot of areas are completely saturated, and while that may temporarily slow adult activity, you should expect to see damage in the next week or so if you haven’t experienced it already.

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Rhododendron are starting to open blooms; scout for larvae and, if necessary, apply larvicides vs. mid-size

In central and northern New Jersey, the annual bluegrass weevil (ABW) populations are moving along with larvae now present up to the third stage. If you have not applied anything to your areas at risk for ABW damage, you should start scouting for larvae ASAP.

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On to early larvicide application where necessary

Most sites in central and northern New Jersey should now be at peak adult densities on the short-mown turf, if not already slightly past peak. The heat wave late last week certainly got them going.  

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That escalated quickly

The bizarre weather year continues for Pennsylvania. Last week alone (April 30 to May 4) saw our ABW population shift into a higher gear.

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New England May WeevilTrak update

Most of us in the northeastern states have been commenting on what a cool spring this has been so far. Now we have the data to prove it. But as temperatures warm up, annual bluegrass weevil (ABW) activity is just beginning to get underway in most of southern New England.

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