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Now Showing: Posts by Dr. Albrecht Koppenhöfer 74 Posts

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Time to control all larval stages: ABW stages likely to be all over the placeMay 28, 2020

Yes, Steve McDonald is right: it is a mess! The crazy weather patterns must have the annual bluegrass weevils (ABWs) about as confused as you.

Timing adulticides was a shot in the dark: better to rely on larvicides this springMay 5, 2020

At Pine Brook Golf Course, annual bluegrass weevil adult numbers determined by soaping have been low all spring (no higher than 0.67 per 1 ft.2 on the fairway).

Best soaping practices and discrepancies between phenological indicators and growing degree daysApril 9, 2020

Research clearly shows that soaping is more effective, less variable and less affected by weather than vacuuming.

How to live with restrictions during COVID-19 pandemicApril 9, 2020

With no golfers on courses and staff limitations for course maintenance crews, it is a good time to think about streamlining operations, especially if...

2020 ABW season outlook and summary of GDD and plant and ABW phenologyMarch 4, 2020

Once again, I’ll be keeping track of annual bluegrass weevil at Pine Brook Golf Course in Manalapan, New Jersey and Preakness Hills Country Club in Wayne...

2019 ABW season summary and 2020 outlookAugust 26, 2019

The recent little heat wave combined with relatively dry conditions may have brought out some trouble with annual bluegrass weevil larvae in some areas...

If scouting reveals high ABW larval densities, time for larvicides to control the first summer generation of ABWJuly 15, 2019

In central and northern New Jersey, scouting for larvae of the first annual bluegrass weevil summer generation should have already started and any necessary...

In central and northern New Jersey ABW Spring generation close to completeJune 17, 2019

In central and northern New Jersey, it is about time to start scouting for the adults of the annual bluegrass weevil (ABW) spring generation. Populations...

Rhododendron approaching full bloom: scout for larvae and, if necessary, apply larvicidesMay 16, 2019

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...

ABW adults building up in New Jersey. Prepare for adulticide applications if necessary.April 18, 2019

The weevils are marching in, but at least at my two sites not in great numbers so far. I’m not sure if my populations are simply that low this year (I...

2019 ABW season in New JerseyMarch 19, 2019

Once again, I’ll be keeping track of annual bluegrass weevils (ABWs) at Pine Brook golf course in Manalapan, New Jersey and Preakness Hills country club...

2018 ABW season summary and 2019 outlookAugust 29, 2018

The ongoing short heat wave, which is supposed to last through Thursday, August 30, combined with the fairly dry conditions in the last 10 days might...

First summer ABW generation reaching adulthood in central and northern NJJuly 30, 2018

In central and northern New Jersey, the first summer generation of annual bluegrass weevil (ABW) populations have already started to show up as adults...

Spring ABW generation approaching adulthood in New JerseyJune 22, 2018

In central and northern New Jersey, the annual bluegrass weevil (ABW) populations are slowly approaching the adult stage. On Tuesday, June 19 at Preakness...

Rhododendron are starting to open blooms; scout for larvae and, if necessary, apply larvicides vs. mid-sizeMay 16, 2018

In central and northern New Jersey, the annual bluegrass weevil (ABW) populations are moving along with larvae now present up to the third stage. If...

On to early larvicide application where necessaryMay 10, 2018

Most sites in central and northern New Jersey should now be at peak adult densities on the short-mown turf, if not already slightly past peak. The heat...

The weevils are marching in, in spurtsApril 19, 2018

In my last blog in March, I speculated about the effect of the two-week spell of very cold weather around the New Year on annual bluegrass weevil (ABW...

When will the weevil come marching? Will they be 1 by 1 or 10 by 10?March 15, 2018

Another WeevilTrak season is ahead of us. I’ll be again keeping track of annual bluegrass weevil (ABW) at Pine Brook Golf Course in Manalapan, New Jersey...