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 2019

Time to scout for and treat against mid-sized larvae in New England

This week's samples from most of our WeevilTrak sites have revealed a range of larval stages. What surprised us was that we are seeing about the same kind of larval activity for most of the locations, even though some sites have been much cooler throughout the spring and are therefore further behind on growing degree days.

Read More

ABW activity in Virginia – May 22

Over the past week, we have seen a flush of adult annual bluegrass weevil activity on greens and in soap flushes of fairways at all three WeevilTrak locations in Virginia.

Read More

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.

Read More

Rhododendron approaching full bloom: scout for larvae and, if necessary, apply larvicides

In central and northern New Jersey, the annual bluegrass weevil populations are moving along. Larvae are now present up to the fourth stage in central New Jersey and up to the third stage in northern New Jersey.

Read More

Ference considerations for Stage 3 applications in western and central Pennsylvania

Western and central Pennsylvania have passed Stage 2 and are rapidly approaching Stage 3. This stage is a pretty critical one and timing can vary based on population development differences between courses within a region.

Read More

May 9 update - ABW activity in Virginia

A brief update on ABW activity in Virginia for the week of May 9.

Read More

NC May WeevilTrak Update

It has been a relatively slow start to the ABW 2019 season so far in North Carolina. Although ABW adults became active in mid-March throughout the state, numbers have continued to remain well below threshold, likely due to rainfall and cooler temperatures. Let’s compare where we are currently to this time last year to help predict when to make the first application.

Read More

To spray or not to spray?

Several superintendents have been asking one or the other of us whether it is time to apply an adulticide for the annual bluegrass weevil. Remember that we normally recommend that application to be made between Forsythia “half green – half gold” and dogwood full bloom. In other words, the HGHG stage is really the earliest you should consider applying an adulticide. Of course, part of the challenge is figuring out which Forsythia plant you should “believe”.

Read More

© Syngenta. Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties and/or may have state-specific use requirements. Please check with your local extension service to ensure registration and proper use. Scimitar GC is a Restricted Use Pesticide. Acelepryn and Ference are Not for Sale, Sale Into, Distribution and/or Use in Nassau, Suffolk, Kings and Queens Counties of New York State unless permitted under FIFRA Section 24(c) Special Local Need Registration. The trademarks or service marks displayed or otherwise used herein are the property of a Syngenta Group Company or their respective third party owners.

(This site has attempted to provide the most accurate, timely information possible on this site. The descriptions, pictures and other representations of products and treatment recommendations on this micro-site may contain inaccuracies and errors. The site owner does not make any warranty or representation with respect to the accuracy or completeness of any such information, and all users of this site should consult their own specialists regarding application decisions and timing.)