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: May 2015

Asynchronous is the Word of the Day - All Stages Present in Northern Virginia

Things have certainly accelerated quickly in the Mid-Atlantic and in certain instances, some damage that we typically don't see this early from ABW, became quite distinct. This was mostly due to added stress imposed by unseasonably dry conditions (lack of rainfall and periods of high temperatures with low humidity and wind).

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Heat and Drought Hit the Northeast

Much of the Northeast is in a moderate drought. According to the National Weather Service, so far this spring precipitation is about 40 percent less than normal. This drought stretches from eastern Pennsylvania, eastern New York, to all of New England.

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ABW update from New Jersey

It has been a busy spring ABW season with 19 experiments on five golf courses. Meanwhile, all five populations I've been working with are ready for larvicide applications versus larger larvae.

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Superintendents Supreme

The greatest assets of WeevilTrak™ are the golf course superintendents that host the sites where data and observations are collected to provide information on the best timing to help control annual bluegrass weevils (ABW). The biggest commitment of a superintendent who participates in the WeevilTrak program is leaving aside untreated turf.

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Preparing for Larvicide Applications in Pennsylvania

We have had a rapid change in the development of our annual bluegrass weevil (ABW) populations in Pennsylvania since my last blog entry (though it appears we are in a slight cool down at the moment).

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Rapid Fire

The last two weeks have been a whirlwind in the Mid-Atlantic and we've seen rapid change in Weeviltrak stage changes. In fact, we've seen sites that were previously trending behind another site now surpass that site.

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New England is Warming Up

The warm weather this past week pushed degree day accumulations and plant phenology very quickly in New England. We went from Forsythia "half green-half gold" to dogwood and lilac full bloom in less than a week.

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Degree Days are Accumulating

Much of New England has enjoyed a slow start to the spring, with temperatures remaining well below the five year average. But the weather pattern shifted about a week ago, and all of a sudden, we are seeing a rapid increase in degree day accumulation.

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Northern VA and MD ABW update

Somewhat summer-like conditions this past week in the Mid-Atlantic have "opened up the flood gates" on many fronts on the golf course and have brought out the season's first annual bluegrass weevil (ABW) larvae.

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ABW Peak

Since all of the locations I am monitoring have moved into Stage 1 or beyond, and adult activity of the spring migration has peaked or is past peak, we have started the search for larvae. As I have been visiting golf courses throughout the region the past 7 to14 days, we have done post application sampling using soap and vacuum methods to determine the effectiveness of applications targeting adults. The vacuum sampling has proven to be a useful technique to find dead adults, whereas the soap flush is not. Just pour your findings onto a tray or bucket and make sure they are dead. Be careful as they can "play possum".

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