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: July 2020

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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ABW larvae of 1st summer generation: Time to scout for and control if necessary

Annual bluegrass weevil populations in central and northern New Jersey currently consist of all stages from spring generation adults through large larvae of the 1st summer generation. Scouting for the large larvae should be ongoing. Applications should then be made to the affected areas as soon as significant larval populations are detected.

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Fairly quiet on the ABW front…

With a few exceptions, annual bluegrass weevil (ABW) activity in North Carolina has been quiet since early June. This is typical for this area. Most years, peaks and corresponding damage start in March-April and continue through Memorial Day. June and July tend to be relatively quiet, and then we see the occasional spike in activity again in early August. So, if you have not had an issue for more than a month, continue to keep an eye on the adult activity in case we see an increase in the next two weeks.

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WeevilTrak Blog for July 2020

We have had nothing but intense heat and no rainfall since my last blog entry and some reports of weevil damage have come in. Several superintendents in our region shared images of large larvae in late June.

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Time for the new summer ABW generations in Southern New England

The spring generation of annual bluegrass weevil (ABW) has completed its development and the adults of that generation are at the peak of their activity now. It is still possible to see some pupae and larvae in some locations, however the vast majority of ABW are adults now, mating and laying eggs.

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