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: April 2017

How do we compare to last year?

It's always fun and helpful to compare present pest and cultural problems to the past. Did this problem occur earlier, or later than last year? Are we ready, or are we too late to control this problem? Of course, the problem I'm talking about is the Annual Bluegrass Weevil.

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Change is finally on the way in New England

March and the early part of April were quite cool, so the overwintering weevils did not start moving at many southern New England locations until last week. Last week we recovered almost 10 weevils, but this week we found almost 40 weevils - and took fewer samples. This suggests that our overwintering adults are finally beginning to move out toward the shorter cuts of grass.

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Full Speed Ahead in Mid-Atlantic

We have now officially pulled up the anchor in Northern Virginia and Maryland and ABW populations are running at full speed. We've accumulated over 200 GDD in short bursts since April 1st , alone.

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As Spring Weather Stabilizes in NC, Look out for ABW

Following a long, cold March, the weather has seemed to stabilize and is finally consistent with average April temperatures in North Carolina. Last week, adult numbers approached the threshold for making an adulticide application at both NC sites.

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Its “Go Time” for Western Pennsylvania; Further scouting for the central region

Significant adult movement was detected in Pittsburgh last Monday (April 10th). The most amount of adults were collected from edges of fairways, but substantial numbers were still found immediately adjacent to overwintering sites. The warm temperatures during the week (especially over Easter weekend) make it time to consider applying an adulticide for the Pittsburgh area. Ideally, these applications will be made early in the week.

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Stage Notifications on the Way

As we move out of the stop and go temperatures of early spring, many sites will be seeing annual bluegrass weevil (ABW) activity increase and will be advancing to Scout for Stage 1 or Stage 1 of WeevilTrak™ shortly, if they haven't already. In anticipation of these changes, I want to briefly describe the differences in the notifications WeevilTrak subscribers will see in your inbox.

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Get ready for adult ABW treatments in central NJ, a little later in northern NJ

In central New Jersey the adult weevil may be approaching peak densities. At Pine Brook Golf Course (Manalapan, NJ) on Wednesday, April 12, I vacuumed up at a rate of 9.7 adults per 10 sec sample, up from 2.7 adults/10 sec sample the week before.

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Timing Peak ABW Adult Movement isn't as Easy as Watching the Forsythia

This week, I traveled more than 1,200 miles, visiting golf courses and scouting for annual bluegrass weevil (ABW) adults in Richmond, VA, northern Virginia, central Maryland, southeastern Pennsylvania, all of New Jersey and even a trip out to the eastern end of Long Island. I paid attention to the road, but also to the Forsythia throughout the trip.

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