February 28 2023

University of California Cooperative Extension

51st Quad-County Walnut Institute

February 28, 2023 * 7:30 AM - 12:00 PM (noon)

Robert J. Cabral Agricultural Center, Evelyn Costa Assembly Room 2 & 3

2101 E. Earhart Ave., Stockton, CA 95206-3949

7:15am Registration and CE credit Sign-Ins, Coffee/ refreshments

8:00-8:05 Welcome and Introductions

Mohamed Nouri, UCCE Orchard Systems Advisor, San Joaquin County

8:05 Session Moderator

Kamyar Aram, UCCE East Bay Specialty Crops Advisor, Contra Costa & Alameda

8:05-8:35 Mold Infections and Their Management in Walnuts & Whole Orchard Recycling

Mohamed Nouri, UCCE Orchard Systems Advisor, San Joaquin County

8:35-9:05 Updates on Walnut Husk Fly, Flatheaded Borer, and Worm Pests

Jhalendra Rijal, UCCE Area IPM Advisor for North San Joaquin Valley

9:05-9:35 Management and Environmental Impacts on Walnut Quality

Bruce Lampinen, UC ANR Pomology Extension Specialist, UC Davis

9:35-10:05 New Research on the Benefits of Cover Cropping in Orchards

Vivian Wauters, Postdoctoral Scholar, Department of Plant Sciences, UC Davis

10:05-10:20 Break

10:20 Session Moderator

Kamyar Aram, UCCE East Bay Specialty Crops Advisor, Contra Costa & Alameda

10:20-10:50 California Walnut Industry Update

Robert Verloop, CEO California Walnut Board

10:50-11:20 Managing Infiltration Problems & Related Impacts and Diseases

Cameron Zuber, UCCE Farm Advisor, Merced County

11:20-11:50 Phytophthora Root and Crown Rot and Paradox Canker Disease in Walnuts

Jaime Ott, UCCE Orchard Systems Advisor, Tehama County

11:50-12:00 Closing