Dept. of Entomology
Univ. of California-Davis
Office: 73 Briggs Hall
Lab: 78 Briggs Hall
Phone: (530) 752-0473
Fax: (530) 752-1537
My lab strives to develop and assimilate management tactics into viable integrated pest management programs for important mite and insects pests of major crops in California. Many of these crops have a world-wide presence (rice and cotton), therefore contacts and collaboration are in place internationally. Various management tactics for pests, i.e., biological control, reduced risk insecticides, mating disruption, cultural control, host plant resistance, etc., are researched as appropriate for the pest/crop situation. This approach is employed in order examine and to attempt to gain insights about the entire system so as to provide usable results that can be extended to agricultural industries in California. Since growers manage crops using a "systems approach", my research philosophy is designed aid in their endeavors. These studies while being relevant can also advance the field of IPM and applied ecology.
Lab Members - Davis lab
Jhalendra Rijal (post-doctoral researcher)
Ph.D. Virginia Tech University, 2013
I am managing a project focused on developing and improving integrated pest management of twospotted spider mite, Tetranychus urticae Koch, and soil-borne insect pests such as mint root borer, Fumibotys fumalis (Guenée), on peppermint, Mentha x piperita grown in Shasta and Siskiyou counties. The project was a collaborative effort among Extension Specialist Larry Godfrey, me, Intermountain Research and Extension Center (IREC) Director/Farm Advisor Rob Wilson, Farm Advisor Dan Marcum (retired), and the California mint industry. During the project, we investigated sampling schemes, distribution patterns, management, biological control (use of predatory mites) and density x damage relationships for T. urticae populations on mint. For the soil-borne pest complex, we worked to better understand the life history of F. fumalis to develop a sampling method and management program using recently-registered reduced risk insecticides. Biological insecticides were stressed in additional research. These projects aim to improve the control of mint flea beetle, Longitarsus waterhousei Kutschera, strawberry root weevil, Otiorhynchus ovatus L., and F. fumalis on peppermint using soil-applied Bacillus thuringiensis ssp. Galleriae and other biopesticides. This research was funded by California Department of Food and Agriculture Specialty Crops Block grant, the Northern California Mint Growers Assn., and an Interregional Research Project No. 4 biopesticide grant. The ultimate goal of my research is to not only manage pest populations on peppermint but to consider the risks of management tactics applied to a landscape that is extremely sensitive to groundwater contamination from pesticides. Results were presented to the mint industry at the IREC Field Day annually in August and at winter production meetings.
Mohammad-Amir Aghaee (graduate student researcher - Ph.D. student)
B.S University of California, Berkeley 2010
Mechanisms of Winter Flooding Effects on Rice Water Weevil
Previous research in the 1990s has shown the pest mitigation effects of winter flooding against rice water weevil. However its adoption as a cultural control is hampered by a lack of knowledge of how it works. I am currently focusing on methane production, silica and arsenic retention in soils as possible sources of larval mortality following a maintained winter flood.
Efficacy of Biopesticides on Rice Water Weevil
We are currently testing microbial products by Phyllom Bioproducts LLC and determining the appropriate doses for use against Rice Water Weevil. This project is currently funded by IR4.
Weed Management on Levees
Rice water weevil feed on levee feeds prior to the flood and planting of rice fields to build up their flight and swim muscles. Previous research has shown an association between Paspalum ditichum (dallis grass) and rice water weevil adults. If the weeds surrounding a field are removed in the weeks leading up to planting, it has the potential of greatly reducing RWW damage by weakening the adults. We are trying to quantify the effects of such a strategy.
Joanna Bloese (graduate student researcher - Ph.D. student)
B.S California State University Chico 2013
I entered UC-Davis as a graduate student in the fall, 2014. I will be working in the rice pest management system.
Kevin Goding (staff research associate)
I assist with lab projects at the Davis lab. These are primarily in rice with additional efforts in the alfalfa, melon, corn, and dry bean systems.
Stacey Rice - undergraduate researcher
Jasjeet Dhanota - undergraduate researcher
Hudson Hollister - undergraduate researcher
Lab Members - Shafter lab
Treanna Pierce (staff research associate)
My name is Treanna Pierce. I am Larry's SRAII in his lab located in Shafter,
CA. We mainly conduct studies on insect pests in cotton but do some work in
corn too. Our research is conducted both at the Shafter Research Station
and the West Side Research and Extension Center.
I have an AS degree in Forestry from Bakersfield College and a BS degree
from Cal Poly, 2005, in Crop Protection with an emphasis in Integrated Pest
Mngmt. I enjoy bugging bugs and manipulating the environment to meet human
needs in a sustainable way; working in the Godfrey lab allows for both in
numerous field crops.