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

Annual bluegrass weevil 2020

We started to first see some annual bluegrass weevil (ABW) damage in northern Virginia and Maryland on May 22 to May 25.

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What a mess

In my career, I thought I had heard every question possible from golf course superintendents until this week. I had a superintendent ask me if I thought the Coronavirus could kill annual bluegrass weevils (ABW)…… I honestly could not answer him seriously, but I did laugh and say “I don’t think so, you are probably going to need to mitigate with an insecticide.”

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Are we at the peak of annual bluegrass weevil adults and when will larvae start to show up?

As many of you follow the news, you hear terms typically used in statistics classes like peak, plateau, spike, curve, and similar when trying to predict something based on previous events or data.

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Challenging Times and Mild Winter Brings Plenty of Questions about Golf Course Maintenance and Pest Control

As the managing consultant of WeevilTrak, I am working with other scientists and we plan to do our best this year with trying to predict the best timing for applications targeting the annual bluegrass weevil.

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Will the 2019 Weevil Season Ever End?

As we return from Labor Day weekend, I am hearing about and seeing, every stage of annual bluegrass weevils, in isolated spots. 2019 has been a tough year for fine turfgrass on many fronts. I have been involved with WeevilTrak since it started and this year has been one of the most challenging years to figure out.

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Ding! Ding! Round Two

In my visits to golf courses, populations of annual bluegrass weevils are asynchronous and have been since early June. Warmer temperatures speed up insect development and decrease the turf’s tolerance to feeding from insect pests.

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High numbers, damage and now more adults

Steve McDonald shares an update on ABW damage that he's seeing in the Mid-Atlantic region.

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Rhododendrons in full bloom throughout the Mid-Atlantic

Rhododendrons are in full bloom throughout the Mid-Atlantic region. This is a classic phenological indicator that larger (greater than third instar) larvae are active feeding and damage from annual bluegrass weevils will soon occur.

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April Showers…bring May Weevils…

Throughout the Mid-Atlantic we have seen or are going to see peak movement of annual bluegrass weevil adults into fine turfgrass areas. In areas surrounding Washington D.C., golf courses likely peaked the week of April 15. In more northern points depending on the population at your course, ABW adults will likely peak the week of April 22.

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Give use better weather in 2019!

Every spring, many superintendents ask me “Steve- what have you heard about the long-term weather forecast this year?” Typically, I chuckle. I have stopped trying to answer this question. I generally advise preparing for the worst weather and then hope the weather is good.

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