What's wrong with my plant? Give us your feedback

Radish > Root > Spots/blotches on root

1 of 3
  • Image: Root Rot Complex 1
    Credit: Kristen Callow, Ontario Ministry of Agriculture
  • Image: Root Rot Complex 2

    Credit: A. F. Sherf, Cornell University

  • - CLICK PHOTOS TO ENLARGE -

green arrowBlack Root
Aphanomyces raphani

2 of 3
  • Image: Potato Scab 1
    Credit: Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org
  • Image: Root Rot Complex 2

    Credit: A. F. Sherf, Cornell University

  • - CLICK PHOTOS TO ENLARGE -

green arrowScab
Streptomyces scabies

  • Round sunken lesions on radish root
  • Common in dry soils with pH above 6
3 of 3
  • Image: Boron Deficiency 1
    Credit: T Zitter, Cornell University.
  • Image: Boron Deficiency 2

    Credit: Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org.

  • Image: Boron Deficiency 2

    Credit: Colucci, North Carolina State University.

  • - CLICK PHOTOS TO ENLARGE -

green arrowDowny Mildew
Peronospora parasitica

  • Skin on the root may be rough, corky and cracked
  • Angular yellow spots on leaves that eventually grow into tan papery areas with a yellow border
  • Fuzzy white to gray fungal growth can be seen on the underside of the leaves
  • Dark brown to black sunken area on the upper half of the radish root, center of root remains white
  • Common in cool wet weather
  • More information on Downy Mildew...

Don't see what you're looking for?