Alternative management of codling moth, navel orangeworm, and web-spinning spider mites in walnuts
The BIOS program was originally started by CAFF in the 1990s with transformative work by Robert Bugg and continued with work by Joe Grant and several collaborators. BIOS was relaunched in 2021, in collaboration with CDFA, UC Cooperative extension, the California Walnut Board, and Pest Control Advisors (PCAs). The Ecological Pest Management team is currently working on two projects: the use of mating disruption for codling moth and navel orangeworm management, and investigating the effects of cover crops and predatory mite releases for management of web-spinning spider mites.
This project involves six BIOS demonstration sites where we implemented alternative pest management practices for CM, NOW, and spider mites in concert with a robust monitoring program for each using UC IPM models and action-based thresholds. Using the results from these demonstrations, the BIOS approach will be compared to the grower standard for these pests, and evaluated on the basis of pest management efficacy, economic feasibility and pesticide use and their environmental implications.
Mating Disruption for Codling Moth and Navel Orangeworm
Cover Crops for Spider Mite Management
Predatory Mite Release
Predatory mite release via leaf blower
Predatory mite release via drone (Video by Ryan Fillmore)
EXPLORE Biologically integrated orchard systems:
On October 5th, attendees gathered at Riverwood Farm in Biggs, California to listen to Kaben Kramer of Tenderly Rooted tell his story of creating a Direct to Consumer market for
Community Alliance with Family Farmers (CAFF) hosted a Biologically Integrated Orchard Systems (BIOS) field day on November 30th in Clements, CA. Farmer Alicia Lewis-Rikkonen arranged a demonstration of a novel
The Community Alliance with Family Farms (CAFF) hosted our fourth Biologically Integrated Orchard System (BIOS) field day, titled “Effective IPM Strategies for Major Walnut Pests,” at Blossom Farms on July