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Impact
Statement

 

Occurrence of Viroids in Commercial Hop (Humulus lupulus L.) Production Areas of Washington State

K. C. Eastwell and M. E. Nelson

November 2007

Research

The objective of this study is to determine which viroids are present in Washington State hop production regions and to gain preliminary information on affected cultivars. These results provide the foundation for further investigations and surveys to determine distribution and impact of viroids on US hop production. Hop stunt viroid (HSVd), the causal agent of hop stunt disease, was detected for the first time in hop plants in North America.

doi:10.1094/PHP-2007-1127-01-RS

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