Vegetable Disease Update – 5/30/18

  • Downy mildew was confirmed on pea last week. The cool, damp weather the past week has been ideal for downy mildew development on spring crops.
  • Soft rot, caused by Pectobacterium spp., was detected on planted potato seed last week in southern New Jersey.
  • Bacterial leaf spot in romaine lettuce was found in the past week.
  • The heavy rains and damp, cool weather have been ideal conditions for early-season damping off caused by Pythium and Phytophthora as well as downy mildew development on spring greens. Growers should continue to scout on a regular basis and remain proactive in their fungicide programs as long as current weather patterns continue.
  • Cucurbit downy mildew has been reported on cucumber as far north as central North Carolina this week.
  • No Late blight has been reported in region to date.