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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

Mid-Atlantic Observations from April and early May.

It's May 6, 2016, it is pouring down rain and the soil is already saturated. I visited close to 20 golf courses this week and rain is one thing that no one in our region needs more of right now! The Philadelphia area is at about 300 growing degree days base 50°F starting March 1, 2016.

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Spring Arrives in Western Massachusetts

Spring is finally springing in western Massachusetts, and we began to see Forsythia in the "half green - half gold" (HGHG)stage earlier this week in many locations. Of course, we then went into another cold snap, and temperatures are just now returning to seasonal levels (highs in the low to mid 60s). Many of the sites we are monitoring have reached Stage 1 (marked by Forsythia "half green - half gold")

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Get ready for ABW larvicide applications soon

Around New Jersey, most golf courses with adult bluegrass weevils (ABW) issues have probably by now applied ABW adulticides to control the overwintered adults. It is now time to get ready for applications of early larvicides as necessary.

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Even in Stage 1, Waiting can be your Best Bet

All three of the sites that our lab monitors for WeevilTrak advanced to Stage 1 (Apply Adulticides) during the last week (April 18-22). These areas include central Pennsylvania to northern Ohio. In all three cases we had a very prolonged Forsythia full bloom (> 3 weeks).

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Adult Weevils are Active in North Carolina

Things are happening in southern North Carolina! In the last week or so, annual bluegrass weevil (ABW) adults have become active and we have seen increased activity in isolated spots in the greater Cashiers, NC area. Despite the warm winter and early spring, degree day accumulations have slowed considerably this month and are now about a week behind what they were this time last year.

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Open Season in the Mid-Atlantic

ABW adult activity has certainly been anything but predictable so far this season, but that shouldn't come as any surprise to any superintendent in the mid-Atlantic region, particularly those who have battled this pest in the past.

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Weevil Emergence on the Fast Track in North Carolina

So far, the weather this year has been all over the place. High temperatures in December, January and February had many worried that we would see record weevil populations as soon as spring emergence began. So far, some sites in North Carolina have accumulated as many Growing Degree Days (GDD) in March as we saw last year in the entire month of April.

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The View from Northern New England

When the temperature hit 78°F in central New Hampshire on March 9, I thought we were in for a very early, spring weevil emergence. But the recent cooler weather stopped the weevil emergence. So, relax and be patient. The first adult spray at half green, half gold Forsythia will not be for awhile.

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Practicing Patience

We are hurtling toward the start of ABW season in central and western Pennsylvania. This has been a bizarre season so far, but we have come to expect unpredictability in the spring given the last few winters.

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Playing the Waiting Game in Southern New England

The topsy-turvy temperatures of the past two weeks throughout the Northeast and the Mid-Atlantic regions have gotten a lot of people talking - talking nervously about the annual bluegrass weevil (ABW). Forsythia are already starting to show some color in the more southern reaches of the weevil's domain, and the annual "itch to do something" is quite evident. I am already getting emails and phone calls from superintendents throughout the region, asking whether it is time to spray.

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