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Comprehensive Update on White Rot Management in Garlic and Onion – Research & Regulatory Insights

This presentation by Bob Ehn, CEO/Technical Manager of CA Garlic & Onion Research Advisory Board, provides an update on white rot management strategies tailored for garlic and onion crops. Key topics include current registration status, grant opportunities, and the development of a White Rot Master Plan. Highlights include recent research projects addressing sensitivity to fungicides, innovative mapping techniques using GPS, and improved management strategies to control white rot infections. The importance of collaboration among researchers and producers is emphasized to bolster garlic seed programs and reduce disease incidence.

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Comprehensive Update on White Rot Management in Garlic and Onion – Research & Regulatory Insights

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Presentation Transcript

  1. Research and Regulatory Wrap Up Bob Ehn CEO/Technical Manager CA Garlic & Onion Research Advisory Board

  2. WHITE ROT UPDATE • Registration Status • Grant-In-Aid Program • White Rot Master Plan • GPS Mapping Program Grant

  3. 2013 Research Projects WHITE ROT • Davis/Ferry (UCDavis)- Sensitivity of white rot to various fungicides. • Oregon State- New strategies for managing white rot. (program delayed until new pathologist on board at Madras Station) • Eady (New Zealand Crop & Food Research)- Biotech development white rot resistance. Program on hold. • Turini/Biscaro- White Rot mapping and site specific management for garlic & onion fields in Fresno Co. • Wilson (Tulelake)- Tank mixes and late season control of white rot.

  4. White Rot Mapping Plan • Utilize GPS mapping system • Use software to allow mapping of infected sites • Use computer software to treat, when possible, infected sites plus offset • Obtain additional grant $$ to expand program and purchase additional hardware and software for mapping and application.

  5. WHITE ROT MASTER PLAN • Inspection of all garlic seed fields • Garlic seed field maintenance • Policy for planting and harvesting from areas known to have white rot • Reporting of fields with white rot infection • Treatment for known infestations (all Allium producers) • Certified Garlic Seed Programs • Development of methods to reduce soil populations of white rot sclerotia

  6. CDFA Certification of Garlic Field

  7. Garlic Rust Management • First observed CA 1934 • Severe outbreak spring 1998 • Section 18 for Folicur 1999 (7 years except 2003) • Azoxystrobin (Quadris) is only other registered compound • Steve Koike/Richard Smith (Monterey) to screen new products & evaluate management plan. • Koike & Board Task Force developed Management Plan

  8. IYSP and Thrips Control • Researchers: • HanuPappu (WA State Univ. Virology) • Eric Natwick (UCCE Imperial Valley) • Donna Henderson (UCCE Imperial Valley) • Steve Orloff/Larry Godfrey (Tulelake) • Tom Turini (UCCE Fresno County) • Mike Davis (UC Extension Pathologist, Davis) • Howard Schwartz (CSU)

  9. IYSP and Thrips Control • Determine effects of early season preventative treatments • Identify thrips species during season • Evaluate an alternating programmed spray program for thrips • Determine overwintering sites for thrips • Evaluate new chemistries for control

  10. Seed Corn Maggot • Rob Wilson/Larry Godfrey (UCCE – IREC) • Evaluation of seed treatment products • Mary Ruth McDonald (Univ. of Guelph, Ontario) • Commercial evaluation of FarMor seed treatment

  11. Weed Control Processed Onions • Weed Control • Rob Wilson (IREC) Herbicide programs for weed control in processed onions

  12. Thank you to: • Syngenta • Dow Chemical • Bayer CropScience • DuPont • Valent • MANA • BASF • Bejo Seeds • John Deere Water • Nichino America

  13. QUESTIONS???THANKS FOR YOUR TIME

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