Vegetable Seed Pathology Program Focus

spinach seed crop

Washington’s small-seeded
vegetable seed industry

  • state, national and global industry
  • up to 70% of the U.S. supply of cabbage, carrot, radish, spinach, & table beet seed
  • up to 50% of the world supply of cabbage, carrot, radish, spinach, and table beet seed
  • >40 small-seeded vegetable seed crops state-wide
  • 2 main productions areas – northwest Washington (cabbage, spinach, beet, …) and northern Columbia Basin (carrot, onion, radish,…)
cabbage leaf showing severe yellow marginal lesions from the disease called black rot

Small-seeded vegetable seed pathology:

  • diseases affecting seed production, including seedborne pathogens
  • zero-tolerance for many seedborne pathogens because of interstate and international exports
  • diseases affect seed yield, quality, & germination and the health of crops grown from seed
  • if seed germination is <80 to 90%, seed lots may be rejected
International Spinach Conference 2006

Vegetable seed pathology
research & extension focus:

  • pathogen detection, biology, & epidemiology
  • develop & implement IPM programsfungicide efficacy trials
  • yield loss studies
  • cultural practices
  • disease resistance
  • develop extension materials (bulletins, website, newsletters, (PNW Vegetable Extension Group)
  • national & international vegetable seed pathology collaborations