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Now Showing: Posts by Dr. Albrecht Koppenhöfer 59 Posts

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Late August ABW status in New JerseyAugust 30, 2023

Where ABW larval densities are on the higher side, some damage may occur during the hotter and drier days forecasted.

ABW stages are all over the place now in New JerseyJuly 24, 2023

With the forecast for the next week in NJ showing no rain and lots of heat — and with ABW larvae present mostly in the later stages — keep a wary eye...

Start scouting for spring generation ABW adults!June 19, 2023

The first new adults from the annual bluegrass weevil (ABW) spring generation have started to show up in central and northern New Jersey.

Rhododendron full bloom: if necessary, apply larvicides vs. mid-size larvae!May 19, 2023

In central and northern New Jersey, ABW populations are moving along with larvae now present up to the fifth stage. At high larval densities, damage might...

Monitoring for adult ABW: the most efficient method – soap flushesApril 5, 2023

Soap flushing is equally effective on greens and fairways, is not affected by temperature and time of day, and can extract more than 90% of any adults...

Time to start monitoring for adult ABW in central and northern New JerseyApril 4, 2023

ABW are on the move in New Jersey, and it's time to start monitoring adult ABW populations if you are planning to apply an adulticide.

2023 ABW season outlook and refresher on GDDs and plant and ABW phenologyMarch 8, 2023

What can we expect early in the season after not having had much of a winter? Not really sure: ABW is a very adaptable creature.

2022 ABW season summary and 2023 outlookSeptember 28, 2022

With some good ABW populations in our plots in spring followed by the dry summer, we have seen some major reductions in annual bluegrass, and an increase...

ABW still causing some trouble here and there in central and northern New JerseyAugust 30, 2022

There has been only limited ABW activity at my research sites in the last weeks. It has been generally very dry since about mid-June and generally very...

In central and northern New Jersey, ABW stages are all over the placeJuly 14, 2022

With the warm weather we have had in the region, ABW stages and generations have continued to advance quickly.

Spring generation ABW generation nearing completion in central and northern NJJune 20, 2022

The spring generation of ABW in central and northern NJ is now mostly in the latter stages.

Early ABW larvicides coming soonMay 9, 2022

The period to apply early larvicides to target small ABW larvae feeding inside the turfgrass plants is around the corner.

Current “heat wave” in New Jersey should bring peak densities of adult ABW: adulticide applications imminentApril 13, 2022

With the current weather forecast, I expect peak adult densities to occur around Friday, April 15. But after that it will get quite cool for a while so...

ABW adults will soon start migrating: predicting activity and estimating adult populationsMarch 14, 2022

The growing degree day monitors have been placed at Pine Brook Golf Course (Manalapan, New Jersey) and Preakness Hills Country Club (Wayne, New Jersey...

ABW season finale and another FAW heads-upSeptember 23, 2021

Things should be really slowing down with annual bluegrass weevils now. But it looks like there is still some scattered ABW activity in New Jersey right now.

ABW still causing some trouble in here and there central and northern New JerseyAugust 31, 2021

Annual bluegrass weevils (ABW) are still rearing their heads here and there in New Jersey. The spottiness of ABW is pretty normal in summer, especially...

ABW stages all over the place in central and northern New JerseyJuly 28, 2021

With the warm weather we have had in the region, annual bluegrass weevil (ABW) stages and generations have continued to advance quickly.

In central and northern New Jersey ABW spring generation close to complete for 2021June 29, 2021

In central and northern New Jersey, it is time to scout for and, if necessary, treat against the adults of the annual bluegrass weevil spring generation...

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