Woronin began his work on the investigation of the cabbage hernia in 1873 and did not complete it until the autumn of 1876; thus, the discussion that he presents here is the result of three years’ work. He succeeded in discovering that the actual cause of the disease was a new organism, which he named Plasmodiophora brassicae. He investigated its life history as thoroughly as possible and by means of cultural experiments proved to himself that this organism was the only cause of cabbage hernia. After he was sure of the pathogen, it was not difficult to turn to control measures, which, though not completely eliminating the disease, might appreciably decrease its development.

Plasmodiophora Brassicae - The Cause of the Cabbage Hernia