Plant Pathology: Extension: Plant Disease Library

Clubroot of crucifers - Plasmodiophora brassicae

Cabbage - Brassica

Disease Symptoms:
Field symptoms are stunted, yellow plants usually in low areas of the field.

Upon closer inspection, whitish, gall-like, amorphous growth appear on roots.

A close up of a clubroot gall.

Disease Management:
Rotate cabbage crops to well-drained soils where clubroot has not been observed. Do not introduce the pathogen to a noninfested field through irrigation, infested transplants, or on equipment which has been used in a clubroot infested field. Maintain pH levels between 6.5 and 7.0.

Compiled by: Dr. David Langston, UGA Vegetable Pathologist - Tifton
Photos by: Mickey Cummings, CEC, Union County Extension Service