1 / 9

Turfgrass Entomology Update Rutgers University Albrecht Koppenhöfer

Turfgrass Entomology Update Rutgers University Albrecht Koppenhöfer. Research Projects:. Mating disruption of oriental beetle Biological and biorational control of annual bluegrass weevil Steinernema scarabaei for long term white grub suppression

carter-fernandez
Download Presentation

Turfgrass Entomology Update Rutgers University Albrecht Koppenhöfer

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Turfgrass Entomology UpdateRutgers UniversityAlbrecht Koppenhöfer

  2. Research Projects: • Mating disruption of oriental beetle • Biological and biorational control of annual bluegrass weevil • Steinernema scarabaei for long term white grub suppression • Entomopathogenic nematode application and ecology • New chemistry for white grubs and annual bluegrass weevil management

  3. Steinernemascarabaei for long term white grub suppression • isolated from epizootics in Japanese and oriental beetle larvae in turfgrass areas in central NJ • biology similar to that of other EPN species • appears to be rather specific to white grubs • High pathogenicity and high field efficacy against many white grub species Nematode-infected grubs S. scarabaeiH. bacteriophora

  4. Long-term suppression of white grubs by S. scarabaei - Field experiments - • 4’ x 4’ Kentucky bluegrass plots enclosed by 5” high ‘Emerald Edge’. • 160 OB larvae (late L2 & early L3; 10/ft2) released 1 wk before treatment. • Application with watering can (~0.5” water) in mid-September (early L3). • Field irrigated as necessary to keep out of excessive drought stress.

  5. Timing of sampling activities Seasonal life- cycle Annual White Grub Appl. EPN EPN EPN EPN Grub EPN Grub

  6. Long term suppression of white grubs by S. scarabaei Expt. 1 Treated 9/17/02 0-2.5 B Ss/ha

  7. Long-term suppression of white grubs by S. scarabaei Expt. 2 Treated 9/19/03 0-0.6 B Ss/ha

  8. Long-term suppression of A. orientalis in turfgrass by S. scarabaei Field experiments (1.5 m2 microplots, 10 L3/0.1 m2)

  9. Conclusions: S. scarabaei for white grub control: • has outstanding potential as a curative control agent for many white grub species. • suppresses grub populations for 1-2 years after application. • is effective in a wide variety of soil types. • may be a good candidate for inoculative releases.

More Related