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American Potato Journal

, Volume 13, Issue 10, pp 277–285 | Cite as

Some preliminary notes on the effect of psyllid yellows on seed stock from infected plants

  • C. H. Metzger
Article

Conclusion

Sufficient evidence has already been presented to show that damage to seed from psyllid infestation may occur under certain environmental conditions, and that it is dangerous to certify fields showing more than fifteen per cent of mild symptoms of psyllid yellows on second inspection. This tolerance was adopted in Colorado beginning with the season of 1934.

Keywords

AMERICAN Potato Journal Infected Seed Certified Seed Psyllid Yellow Irish Cobbler Potato 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature Cited

  1. (1).
    Richards, B. L. 1927. A new and destructive disease of the potato in Utah, and its relation to the potato Psylla. Ann. Proc. Potato Assoc. of America, No. 14, pp. 94–95.Google Scholar
  2. (2).
    — 1931. Further studies with psyllid yellows of the potato. (Abstract) Phytopathology 21: 103.Google Scholar
  3. (3).
    Richards, B. L., and Blood, H. L. 1933. Psyllid yellows of the potato. Jour. Agr. Res. 46: 189–216.Google Scholar
  4. (4).
    Metzger, C. H. 1934. Growing potatoes in Colorado. Colo. Sta. Bul. 412.Google Scholar
  5. (5).
    Shapovalov, M. 1929. Tuber transmission of psyllid yellows in California. (Abstract) Phytopathology 19: 1140.Google Scholar

Copyright information

© Springer 1936

Authors and Affiliations

  • C. H. Metzger
    • 1
  1. 1.Colorado State CollegeFort Collins

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