Submitted to: Proceedings of North American Root Weevil Workshop
Publication Type: Proceedings
Publication Acceptance Date: 8/12/2002
Publication Date: 2/5/2007
Citation: Mankin, R.W. 2007. Acoustic detection of otiorhynchus sulcatus larval infestations in nursery containers. Proceedings of North American Root Weevil Workshop. Interpretive Summary: Proceedings of the North American Root Weevil Workshop, November 1-2, 2001, North Willamette Research and Extension Center, Aurora, Oregon Peter Gothro1, Robin Rosetta, Richard Mankin3 1FDA PRL-NW, Bothell, WA 98021 2Oregon State University, North Willamette Research and Extension Center, Aurora, OR 97002 3USDA-ARS Center for Medical, Agricultural, and Veterinary Entomology, Gainesville, FL 32608 Scientists at the Oregon State University, Corvallis, OR, the Center for Medical, Agricultural, and Veterinary Entomology, Gainesville, FL and other research institutions in the Northern US have met and discussed a wide range of topics about the detection, monitoring, biology, and integrated management of an important container-crop pest, the black vine weevil. A Proceedings was written to summarize the meeting discussions and provide new information to researchers and container crop managers.
Technical Abstract: The First North American Root Weevil Workshop was held at the Oregon State University North Willamette Research and Extension Center in Aurora, Oregon, November 1-2, 2001. The participants discussed a range of topics about root weevil biology, detection, and monitoring, as well as the population dynamics and integrated pest management of root weevils in different parts of North America. Highlights of the meeting included a description by Sharon Collman (US EPA, Region 10) of a 17-species complex of root weevils that affect nurseries or landscapes in the Northwest region. Sharon also presented a brief overview of root weevil predators, parasitoids and pathogens. A presentation by Richard Mankin (USDA-ARS) showed that it was possible to detect root weevil larvae feeding on plant roots using sensitive acoustic instrumentation, and that different weevil species had unique acoustic 'signatures.' Basic rearing techniques and methods for conducting trials with adults were covered in two papers presented by Richard Cowles (Connecticut Ag. Experiment Station). Ralph Berry and Len Coop (Oregon State University) demonstrated the pest phenology modeling feature of their pest management program in mint. Producers with internet access can run models forecasting the development of strawberry root weevils based on user-provided weather data, or input from one of the hundreds of weather stations plugged into the system.An industry perspective on root weevils was provided by Rufus La Lone (J.M. Smucker Co.), who considered the effects of different species on agricultural production in the northwest. Given the weevils that are out there, what is the impact in the end product? In a nutshell, one grower with a weevil infestation can affect many other growers. Jim Todd (Willamette Agricultural Consulting Co.) presented data showing that what was once considered a minor pest (Barypeithes pellucidus) has been increasing in importance in strawberries and conifers, and the strawberry root weevil has been observed using grass as an alternate host. This last observation should not be a surprise, given the opportunity provide by Oregon's vast acreage of grass seed fields. The final two papers in these Proceedings are from invitees who had prepared reports but were unable to attend the workshop sessions. The paper by Joe DeFrancesco et al. deals with the efficacy of soil-applied insecticides (chloronicotinyls, carbamates and biological) for root weevils in strawberry. The paper by Bryon Quebbeman et al. tested new chemical insecticides (chloronicotinyls and carbamates) for the control of strawberry root weevil larvae and adults in mint.