Test Results for Fall 2024 Dahlias

Samples were analyzed at AGDIA, Inc. (Elkhart, IN) and at UTAH State Diagnostic lab (Logan, UT).  Positive pools of 5 plants (light pink) found by Agdia were tested by the individual plant at Utah State University.  Utah tests for DMV Holland and Portland viruses separately, while Agdia reports them as a  composite test for Dahlia common mosaic virus and dahlia mosaic virus.  Note, when tabs give differing results, I use the positive result regardless of which lab reported the result.   All plants tested for TSV by Utah, were also tested for TSWV and were negative.