Back to our new scouting method…
In an effort to see exactly when the adults are traveling to the fine turf areas, we decided to fabricate our own pitfall traps. The traps are very basic in design and are simply constructed with some 2” PVC pipe, a 2 liter soda bottle and some duct tape. MacGyver would be proud! We have installed the two traps adjacent to fairways one and ten which are excellent indicator areas.
These traps have already proven to be quite functional. We installed the traps on March 18th and already had trapped adults by March 21st. Our trap on hole number ten caught the most ABW adults, twenty-four! What does this mean? The timing of the movement of adults is earlier than expected. We will be adjusting the timing of our pesticide applications to improve efficacy. The improved timing should result in better control of the adults, which will reduce the amount of eggs laid. Less eggs means less larvae equaling less damage.
We are hoping that the improved timing of our pesticide applications will reduce visible ABW damage while maintaining the budgeted cost for its control.
For more information on the Annual Bluegrass Weevil check out my blog entry from July 23, 2010
|ABW Pitfall Trap Design|
|Pitfall Trap on Hole #1|
|Annual Bluegrass Weevil Adult Caught on Hole #10|