American Potato Journal

, Volume 49, Issue 8, pp 296–301 | Cite as

The effect of tuber-borne sclerotia ofRhizoctonia solani Kühn on the potato crop

  • W. C. James
  • A. R. McKenzie


Black scurf on seed tubers did not result in seed decay or stem cankers and did not affect the tuber yield in two field experiments at Ottawa and Fredericton. Seed pieces were classified into three disease categories: 0 to 1%, 1.1 to 5%, 5.1 to 15%, according to the percentage surface area covered by sclerotia ofRhizoctonia solani. The difference between disease categories, in the amount of black scurf on the seed, was perpetuated on the progeny tubers although the actual amount decreased.


AMERICAN Potato Journal Tuber Yield Disease Category Seed Piece Seed Tuber 
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Copyright information

© Springer 1972

Authors and Affiliations

  • W. C. James
    • 1
  • A. R. McKenzie
    • 2
  1. 1.Research BranchCanada Department of AgricultureOttawa
  2. 2.Research BranchCanada Department of AgricultureFredericton

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