Plant Disease Diagnostic Lab Highlights

The following plant disease highlights from the University of Kentucky Plant Disease Diagnostic Laboratories represent recent sample submissions from field crops, fruit, vegetables, and ornamentals.

Diseases diagnosed during the past week have included Rhizoctonia damping-off and Pythium root rot on tobacco transplants; Botryosphaeria dieback and Phomopsis twig blight on blueberry; Phytophthora root rot on black raspberry, blueberry, and haskap berry; cane blight on blackberry; tomato spotted wilt virus on tomato; thrips injury, cold injury, and genetic mutations on pepper; thrips injury on cucumber; and Pythium root rot on calibrachoa.

Figure 1. Diplodia tip blight of pine. (Photo: Nicole Ward Gauthier, UK)

Figure 1. Diplodia tip blight of pine. (Photo: Nicole Ward Gauthier, UK)

Landscape ornamental samples included Dothistroma needle blight and Diplodia tip blight on pine (Figure 1); and Stigmina needle blight on spruce.

 

By Julie Beale and Brenda Kennedy, Plant Disease Diagnosticians

 

 

 

 

Posted in Plant Disease Diagnostic Lab