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: Steve McDonald

Severe Weather in Early September and Mid-Atlantic Sites Enter Scout for Stage 7

Tropical storm/Hurricane Ida brought some of the heaviest rainfall totals I have ever seen in my career in a few just an hours to much of CT, western MD, NJ, NY, and central and eastern PA.

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You must be happy it’s August - Not always!

August is always a very important and tough month for golf course care in the Mid-Atlantic and North East regions. A few of the major issues include: tired grass from heat stress, seasonal employees leaving which creates a void and labor challenges and then there’s insect and disease pressure.

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ABW larvae showing up in full force

After a quiet late June and early July, ABW larvae have shown up in full force in mid-to-late July 2021.

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ABW Larvae Escapes 2021

ABW has been and will likely continue to be one of the most intractable insect pests of fine turfgrass throughout the Mid-Atlantic and Northeast regions. Sometimes, I see breakthrough with a well-timed application regime with the proper insecticides. In this blog, I will try to explain the reasons why I feel we see isolated outbreaks in golf course turf.

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It is time!

All of the phenological indicators are pointing at full bloom Rhododendron as a great tool for targeting larvae before damage occurs. Throughout the Mid-Atlantic and the New York City metro region, we are finding ABW larvae that are already large enough to cause damage or that will start to cause damage.

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Was there a peak of ABW adults this year?

There was no clear peak of ABW adults in all of the sites I am watching for weevils along with my research sites. This made adult treatment difficult in some circumstances. But all of the WeevilTrak locations are in stage 1 or past and entering the time to begin larvae treatment.

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March 2021 WeevilTrak Update

I have been looking for annual bluegrass weevil (ABW) adults every day since early March. On a few of the warmest days of the year so far, I have found low densities throughout Maryland, Delaware, Southeastern Pennsylvania and New Jersey. These densities are very low and in my opinion, they do not warrant insecticide applications. I encourage patience.

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They are Either Here or They are Not! The last of ABW blogs (I hope) for 2020!

2020 will go down as crazy and wild year in many factors of our lives. 2020 was a pretty temperate year for annual bluegrass weevils (ABW) as a whole. I only saw a handful of heavily damaged areas this year compared to what I typically see in my travels. This was a good thing

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Where are the Annual Bluegrass Weevils in the Mid-Atlantic?

The 2020 year has been one of uncertainties in many areas and it’s true for annual bluegrass weevils (ABW) as well.

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Does the Weather Person have the Perfect Job?

Trying to predict annual bluegrass weevil (ABW) activity after the middle of July is like trying to predict rainfall in the Mid-Atlantic during the third week of July.From this point on, it’s best to scout your site and make applications as needed depending on your threshold for damage and what you are finding. If your golf course has a history of late summer and even damage into October or later, it’s important to stay diligent with your efforts.

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