Conference on Soilborne Plant Pathogens

Conference on Soilborne Plant PathogensConference on Soilborne Plant PathogensConference on Soilborne Plant Pathogens
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Conference on Soilborne Plant Pathogens

Conference on Soilborne Plant PathogensConference on Soilborne Plant PathogensConference on Soilborne Plant Pathogens
Home
Registration
Field Trip
Hotels
Scholarships
Agenda
More
  • Home
  • Registration
  • Field Trip
  • Hotels
  • Scholarships
  • Agenda
  • Home
  • Registration
  • Field Trip
  • Hotels
  • Scholarships
  • Agenda

Conference on Soilborne Plant Pathogens & California Nematology Workshop

Tuesday, March 24, 2026 

8:00-3:00 pm Field Trip

3:30-5:30 pm California Nematology Workshop. Nectarine Room.


Wednesday, March 25, 2026 

7:30-8:00 am Registration


8:00-8:15 am Opening Remarks. Atef Swelam. Director Kearney and Westside Research and Extension Centers, aiswelam@ucanr.edu. 


8:15-9:15 am Keynote Talk I. Session Chair: Andreas Westphal, University of California-Riverside, andreasw@ucr.edu

Subterranean Conservation Biological Control: Working with What We’ve Got. Larry Duncan. University of Florida. lwduncan@ufl.edu 


9:15-10:30 am Session I. Nematodes I. Session Chair: Andreas Westphal, University of California-Riverside, andreasw@ucr.edu

  • Biological Suppressiveness of Sugarbeet Cyst Nematodes in California Coastal Broccoli Fields. J. Smith Becker, S. T. Koike, J. Borneman, and J. O. Becker (speaker). University of California-Riverside. obecker@ucr.edu
  • Biological control potential of fourteen Hyalorbilia oviparasitica strains against plant nematodes. Jiue-in Yang. University of California-Riverside. jiuein.yang@ucr.edu
  • Nematode and soil health management in low desert vegetable cropping systems. Philip Waisen. UCCE Riverside and Imperial Counties. pwaisen@ucanr.edu
  • Nematode management in Brazilian cropping systems: evidence from high pressure systems. Wellington Rodrigues. Lallemand Plant Care. wrodrigues@lallemand.com
  • Use of a nematicide as a foliar spray – effects on root-knot nematodes. Antoon Ploeg. University of California-Riverside. atploeg@ucr.edu


10:30-11:00 am Coffee Break & Martin Stoner Student Travel Scholarship Announcements


11:00-12:15 pm Session II. Martin Stoner Student Travel Scholarship Presentations. Session Chair: Session Chair: Raymond Mireles, UCCE Fresno and Tulare Counties, jrmireles@ucanr.edu

  • Studies of Corky Root in Lettuce. María Ferrer (winner). University of California-Davis. mferrerruiz@ucdavis.edu
  • Optimizing the Use of Coniothyrium minitans for Management of Sclerotinia Stem Rot of Soybean (Glycine max). Amit Sharma (winner). University of Wisconsin-Madison. amit.sharma@wisc.edu
  • Rhamnolipid Biosurfactant Application Prevents Pythium Infection and Carrot Cavity Spot Development. Sola Awoyemi (runner up). University of California-Riverside. sawoy001@ucr.edu
  • Limitations of Soil Applied Biologicals for Managing Lettuce Fusarium Wilt. Evan Tamayo (runner up). Cal Poly San Luis Obispo. emtamayo@calpoly.edu
  • Evaluating Host Resistance to Macrophomina Root Rot and Verticillium Wilt in Strawberry. Maria Alvarez Arredondo. Cal Poly San Luis Obispo. malvar88@calpoly.edu


12:15-1:15 pm Lunch


1:15-2:30 pm Session III. Nematodes II. Session Chair: Antoon Ploeg, University of California-Riverside, atploeg@ucr.edu

  • Can walnut residues play a role in nematode population dynamics? Choi Chow . University of California-Riverside. choi.chow@ucr.edu
  • Improving thresholds levels for management of plant-parasitic nematodes in almond. Rainier Medina. University of California-Riverside. rainier.medina@ucr.edu
  • Soil suppressiveness against plant-parasitic nematodes in almond. Damaris Godinez-Vidal. University of California-Riverside. damaris.godinezvidal@ucr.edu
  • Multi-tactic approaches for nematode management in grapes. Andreas Westphal. University of California-Riverside. andreasw@ucr.edu
  • Target Protein Identification of Chalcone Nematicides in Caenorhabditis elegans. Ayuba Abaka. California State University-Fresno. ayuba@mail.fresnostate.edu


2:30-2:45 pm Break


2:45-3:30 pm  Session IV. Disease Resistance and Plant-Microbe Interactions. Session Chair: Hao Peng, USDA-ARS, Hao.Peng@usda.gov

  • Developing Tomato Resistance to the Parasitic Plant, Branched Broomrape. Alexander Liu. University of California-Davis. alxliu@ucdavis.edu
  • Effector repertoires of tobacco-infecting Rhizoctonia solani AG3 and AG4 isolates
  • Beneficial bacteria mitigate drought stress by upregulating the flavonoid biosynthetic pathway. Emma Gachomo. University of California-Riverside. emma.w.gachomo@ucr.edu


3:30-4:45 pm Steering Committee


6:00-9:00 pm Banquet Dinner


Thursday, March 26, 2026 

8:15-9:15 am Keynote Talk II. Session Chair: Andreas Westphal, University of California-Riverside, andreasw@ucr.edu

The Journey of a Plant Pathologist: From Soilborne Fungal Pathogens to Aerial Tree Pathogens. Themis Michailides. University of California-Davis. tjmichailides@ucanr.edu


9:15-10:30 am Session V. Fungal and Oomycete Genomics and Population Dynamics. Session Chair: Kelley Paugh, California Department of Food and Agriculture, kelley.paugh@cdfa.ca.gov

  • Diversity of Phytophthora sp. associated with plant roots in nurseries in California. Wolfgang Schweigkofler. Dominican University of California. wolfgang.schweigkofler@dominican.edu
  • New detections of Fusarium wilt on berry crops. Kelly Ivors. Driscoll's. kelly.ivors@driscolls.com
  • Prevalence of a Novel Pathotype of Fusarium oxysporum f. sp. lactucae in California and Arizona. Nethmini Wijesundara. University of California-Riverside. nethmini.wijesundara@ucr.edu
  • Population Genomic Diversity of Fusarium oxysporum f. sp. lactucae and the Emergence of a Novel Variant. Nicole Lukasko. University of California-Riverside. nicole.lukasko@ucr.edu
  • The causal agent of Pythium wilt disease in lettuce, Globisporangium uncinulatum. Yuxin Bai. University of California-Davis. byxbai@ucdavis.edu


10:30-10:45 am Coffee Break


10:45-12:15 pm Session VI. Sustainable Disease Management. Session Chair: Shashika Hewavitharana, Cal Poly San Luis Obispo, shewavit@calpoly.edu

  • Management Strategies for Phytophthora Crown and Root Rot of Pistachio in California. Alejandro Hernandez. University of California-Davis. aihernandez@ucdavis.edu
  • Integrating Biofungicides into Conventional Programs: Pathways Toward Sustainable Pest Management. Meghan Rains. Lallemand Plant Care. mrains@lallemand.com
  • In vitro efficacy of sanitation products against two soilborne pathogens: Verticillium dahliae and Phytophthora cactorum. Elias Barriga-Hernandez. Cal Poly San Luis Obispo. ebarriga@calpoly.edu
  • Effects of soil steaming on microbial biodiversity and physiological activity. Wolfgang Schweigkofler. Dominican University of California. wolfgang.schweigkofler@dominican.edu
  • Develop integrated management strategies for lettuce Fusarium wilt. Yu-Chen Wang. UCCE Monterey, Santa Cruz, and San Benito Counties. yckwang@ucanr.edu
  • The IR-4 Project: Increasing pest management options for specialty crop growers since 1963. Kari Arnold. Western Region IR-4. klarnold@ucdavis.edu


12:15-12:20 pm Closing Remarks

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