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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.
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- verified Status: Released
- calendar_month Release Date: 1949-01-01
- video_camera_front Companies
- timer Runtime: 9 Mins
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- info IMDB ID tt26255442
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