Crop Science Grow Your Career with CSSA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published in Crop Sci 7:613-616 (1967)
© 1967 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Darunday, Z. D.
Right arrow Articles by Hanson, E. W.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Darunday, Z. D.
Right arrow Articles by Hanson, E. W.
Agricola
Right arrow Articles by Darunday, Z. D.
Right arrow Articles by Hanson, E. W.

Some Factors Affecting the Development of Northern Anthracnose of Red Clover1

Zenaida D. Darunday and E. W. Hanson2

Only a trace of disease developed where spore concentration of the inoculum was as low as 2,000 spores per milliliter. Disease level increased with concentration up to 442,000 spores per milliliter on the more susceptible clone and up to 1,250,000 spores per milliliter on the less susceptible clone. The optimum temperature range for development of the disease was 20 to 24 C. No symptoms developed at 28 C. Low light intensity, especially during the first 4 days after inoculation, favored disease development. Red clover clones differed greatly in their reactions to different isolates of the pathogen. None of the clones was immune to all isolates, but one was immune to 7 of 18 isolates tested and resistant to the other 11. Isolates of Kabatiella caulivora differed in virulence as well as pathogenicity.

Key Words: disease tests • light effects on disease • inoculum concentration effects on disease • resistance to northern anthracnose • races of kabatiella caulivora • artificial epiphytotics

1 Contribution from the Wisconsin Agricultural Experiment Station. Supported in part by the Research Committee, Graduate School, University of Wisconsin, with funds supplied by the Wisconsin Alumni Research Foundation. Appreciation is expressed to E. H. Herrling for assistance in preparing the illustrations.

2 Research Assistant and Professor of Plant Pathology.

Received for publication May 1, 1967.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Vadose Zone Journal
Journal of Plant Registrations Soil Science Society of America Journal
Journal of Natural Resources
and Life Sciences Education		 Journal of
Environmental Quality
Copyright © 1967 by the Crop Science Society of America.