2022 Projects

Title Project Type
Data or Report Link
Thrips in organic tomato production Integrated Solutions Tomato thrips report Thrips commonly affect tomatoes grown in Yolo County, causing leaf dessication and cosmetic fruit damage.  Thrips also vector tomato spotted wilt virus that can damage fruit and stunt and kill plants. This project screened performance of a variety of commercially available OMRI registered insecticides for managing thrips in organic tomato field production. Project is complete.
Orange naval worm control in almond Integrated Solutions Almond Naval orangeworm report Naval orangeworm is one of the most problematic insect pests in commercial almond production in California due to resistance to pyrethroids.  This field experiment evaluates the efficacy of multiple biopesticides and conventional pesticides compared to the industry standard.  Project is complete.
Weed control in wild rice Integrated Solutions Wild rice herbicides There are few registered products to control weeds in wild rice production in California.  This project evaluates the crop safety of several herbicides.  Trials are ongoing.
Olive fruit fly in olive Integrated Solutions Olive fruit fly report The olive fruit fly maggots feed on the inside of the fruit, allowing secondary bacteria and fungi to enter and cause fruit rot that degrades the quality of olive oil.  This study assesses performance of conventional and biological insecticides to control olive fruit fly in California olive orchards.  Project is complete.
Grapefruit disease control Food Use Residue IR-4 Project 13283 To control phytophthora root and crown rot in grapefruit, the Valent product Elumin (ethaboxam) was prioritized and selected for IR4 residue trials. Following EPA guidelines for residue research three residue trials were conducted in California at UC Davis, Kearney Agricultural Research and Education Center, and UC Riverside. The trials are completed and samples are in the process of being analyzed. These will be summarized and submitted to the EPA for registration on grapefruit. When complete, the final report to EPA will be available upon request.
Tomato orobanche weed Integrated Solutions Tomato orobanche report The problem of broomrape (Orobanche ramosa) a parasitic plant has been growing in California processing tomato fields. A second year of funding for this Integrated Solutions project was conducted at UC Davis for crop safety and in a grower field for efficacy. All trials are complete.
Table grape bud break regulation Integrated Solutions Grape bud break reports Grape growers in California need a less toxic alternative to Dormex, which is the only currently registered product for bud break regulation in table grapes. This project tests the efficacy and crop safety of other potential products for registration. Four trials were conducted in California. Three have been completed and one is ongoing.
Black fly control in fig Integrated Solutions Black fly in fig reports Black flies are a new invasive pest in California figs and little is known about management strategies.  This project seeks to screen several conventional and biopesticide products for their efficacy in black fly control.  Trials are ongoing.
Date palm weed control Integrated Solutions Date palm reports California date growers need alternatives to glyphosate for weed control.  This project screens several herbicides for efficacy and crop safety in date palm orchards.  Trials are ongoing.
Mealybug efficacy Environmental Horticulture Mealybug report These trials were conducted at UC Davis to search for chlorpyrifos alternatives to control citrus mealybug in ornamental plants. Products tested included conventional chemistries and biopesticides.
Thrips efficacy Environmental Horticulture Thrips report This study tested new conventional products and biopesticides on their effectiveness to control Western Flower thrips in ornamental plants. The trials were conducted at UC Davis.