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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

August Weevil Update for North Carolina

Despite adult count during increases the last week of July (record highs in some places), very little damage has been observed so far in August. In past years, the first week of August can be a busy time for annual bluegrass weevil (ABW) in Cashiers, North Carolina and mid-August for the Beech Mountain, North Carolina area, but this has not been the case so far in 2018.

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First summer ABW generation reaching adulthood in central and northern NJ

In central and northern New Jersey, the first summer generation of annual bluegrass weevil (ABW) populations have already started to show up as adults. There has been little ABW activity at either of the golf courses I follow. However, at our turf farm in New Brunswick, a good number of adults have been observed on some plots and the developmental stages extracted from turf plugs were primarily large larvae and pupae.

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Rain, rain, go away!

Most of New England has experienced the same steady, unrelenting rain that so many of the WeevilTrak bloggers have mentioned. We have had over six inches of rain in Amherst in the past week, and some areas have had more than that! The steady rain has certainly kept the turf out of summer dormancy, but it has provided plenty of stress.

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2018: The Year of Extremes?

Weather extremes have made 2018 a challenging year to groom your golf course the way you want to. I have met with some frustrated superintendents regarding labor, staffing, wet weather, heat stress and other challenging topics. But ironically, one of the least common topics I have had on visits to golf courses this year has been annual bluegrass weevil (ABW) damage.

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2018: The Year of Rain

2018 has been the year of rain. And currently, the forecast across the western part of North Carolina is calling for more rain over the next 10 days. As mentioned previously, annual bluegrass weevil (ABW) damage occurs immediately following heavy rainfall, so be sure to be extra vigilant over the next few weeks. Remember, August tends to be a very busy time for ABW in North Carolina.

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Hot and dry in Pennsylvania; ABW in Kentucky

We are entering a period when we typically start to observe 2nd generation larval feeding damage in the Pennslyvania. Turf is incredibly stressed right now, and any marginal control earlier in the month could become apparent now. We've also seen new developments of ABW damage in Kentucky.

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Spring ABW generation approaching adulthood in New Jersey

In central and northern New Jersey, the annual bluegrass weevil (ABW) populations are slowly approaching the adult stage. On Tuesday, June 19 at Preakness Hills Country Club (Wayne, northern New Jersey), we found anything from first instar larvae through to young (still reddish) adults but with the majority of developmental stages being fifth instars and pupae. It can be expected that new adults will start to show up in significant numbers on most golf courses in central and northern New Jersey in the last week of June and peak in the first week of July.

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Don’t let your guard down against ABW

The first generation of annual bluegrass weevils appears to be winding down in some parts of southern New England, and just reaching its peak in some of the cooler areas. The worst may be over for many of you now, but remember that weevil damage can occur anytime from now through the middle of September.

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Be vigilant before ABW summer damage appears

Although there has been some rainfall out west, it is nothing compared to what we saw during the month of May. As mentioned in the previous blog post, severe annual bluegrass weevil (ABW) damage at both northern and southern sites followed almost immediately after the excessive rainfall observed last month.

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WeevilTrak Update from the Mid-Atlantic

A lot has happened since my last WeevilTrak post, including the completion of many of our chemical trials, and the appearance of annual bluegrass weevil (ABW) damage in many areas. The weather has, more or less, returned to normal, and growing degree day (GDD) accumulations are more consistent with years past. In fact, the late start to the season was overcome by the end of May, and we now sit ahead of past year GDD accumulations.

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