The Enemies of the Potato: Virus Diseases 1949 Directed by Maurice Proulx Les ennemis de la pomme de terre: Maladies à virus
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.
