The Enemies of the Potato: Virus Diseases (1949)
The Enemies of the Potato: Virus Diseases (1949) - Documentary Movies 9 minutes. . Among the various diseases that attack the potato during the growing season, there are first of all the virus diseases such as Mosaic, Leaf Roll, Spindle, Purple Top, etc. Certified seed appears to be the most effective means of combating these diseases. potatoes, documentary short
