American Potato Journal

, Volume 19, Issue 4, pp 71–74 | Cite as

Accuracy of the ultraviolet-light method for selecting ring rot free potato seed stocks

  • V. E. Iverson
  • F. M. Harrington

Summary and Conclusions

In tests to compare the accuracy of the ultraviolet-light and the gram stain methods for selecting potato seed stocks free from bacterial ring rot, it was found: (1) That the ultraviolet-light method was just as effective as the gram stain method; (2), that the ultraviolet-light examinations were made in less than one-tenth of the time necessary for the gram stain tests; and (3), that the ultraviolet-light method had additional value in reducing the incidence of other “ascula” diseases.


AMERICAN Potato Journal Agricultural Experiment Station Seed Piece Mercuric Chloride Bacterial Wilt 
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Literature Cited

  1. 1.
    Iverson, V. E., and Kelly, H. C. 1940. A new method of identifying potato tubers free from bacterial ring rot and other types of decay, Mont. Agr. Exp. Sta. Mimeo. Circular 20, April.Google Scholar
  2. 2.
    -.1940. Control of bacterial ring rot of potatoes with special reference to the ultraviolet-light method for selecting disease-free seed stock, Mont. Agr. Exp. Sta. Bull. 386, December.Google Scholar
  3. 3.
    -. 1940. Suggestions for control of bacterial ring rot of potatoes, Mont. Agr. Exp. Sta. Circular 161, December.Google Scholar
  4. 4.
    Saville, D. B. O., and Racicot, H. N., 1938. Bacterial wilt and rot of potatoes—Some suggestions for its detection, verification, and control, Amer. Potato Jour. 15:312–318.CrossRefGoogle Scholar

Copyright information

© Springer 1942

Authors and Affiliations

  • V. E. Iverson
    • 1
  • F. M. Harrington
    • 1
  1. 1.Montana Agricultural Experiment StationBozeman

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