IPM Farm Advisor Carolyn Pickel (left) and Butte County Farm Advisor Bill Olson (center) discuss codling moth monitoring data with a walnut grower.

IPM Farm Advisor Carolyn Pickel (left) and Butte County Farm Advisor Bill Olson (center) discuss codling moth monitoring data with a walnut grower. Butte County.  Credit: Jack Kelly Clark
Credit: Jack Kelly Clark