American Potato Journal

, Volume 22, Issue 12, pp 362–372 | Cite as

The cause of purple-top of potatoes, as indicated by a study of its distribution within fields

  • Geoffrey Beall
  • F. M. Cannon


From a statistical study of the distribution of purple-top within tuber-unit plantings it is clear that the cause of purple-top may operate variously over a field but with similar freedom along and across rows of potatoes. There is, further, certainly no tendency for one plant to be infected as a co-member of a tuber-unit has purple-top; hence the condition cannot be simply transmitted from a plant to its neighbor. There is an uncertain suggestion, to the contrary, that a regular proportion of plants in each tuber-unit tend to purple-top, as might be the case if structure of the mother tuber, for each unit, were involved.


AMERICAN Potato Journal Potato Grower Irish Cobbler Potato Jour Mother Tuber 
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Copyright information

© Springer 1945

Authors and Affiliations

  • Geoffrey Beall
    • 1
  • F. M. Cannon
    • 2
  1. 1.The Institute of Paper ChemistryAppleton
  2. 2.Dominion Entomological LaboratoryP. E. I.Charlottetown

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