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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

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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Weevil update from Pennsylvania

The past week was relatively cool in most parts of Pennsylvania, with only a few Growing Degree Days (GDDs) being accumulated. Our research sites in western and central Pennsylvania accumulated 4 and 12 GDDs (Base 50°F) respectively, between April 22 and 28.

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Spring's Fling

Black ice and snow flurries kicked at western New York Wednesday morning, reminding us of the vagaries of spring. A step back into cooler temperatures means that plants pause and insects slow down. For the annual bluegrass weevil (ABW), immigration undoubtedly stutters.

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Adult Populations Peaking in Weevilville

The lights are on and just about everyone is home. The past two weeks have brought more consistent spring-like temperatures in the Mid-Atlantic and coincidentally more noticeable adult annual bluegrass (ABW) activity on fine turf.

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Weather, Adult Emergence and Plant Phenology

It has been very cool and wet the last few days in northern New England. The weather has stalled the accumulation of degree days and the development of forsythia. It may be cool the rest of the week. Degree day accumulation is about six days behind last year. Forsythia are just starting to bloom in southern locations. The first adult emergence on my annual bluegrass weevil (ABW) monitoring sites was in Manchester, Vermont on April 20.

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Migration Plantation

Last week marked the Cherry Blossom Festival in Washington, D.C. The afternoons were marked with warm sun and many different plants in the landscape were blooming. We are seeing more migration of annual bluegrass weevil (ABW) adults on all of the sites I am working with for WeevilTrak.

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