Plant Disease Diagnostic Lab Highlights

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

Diseases diagnosed recently include drop (Sclerotinia) on lettuce; timber rot on tomato; and root knot nematode on carrot (Figure 1), snapdragon grown for cut flowers, and spreading geranium in a landscape planting.

Figure 1. Extreme distortion of carrot infected with root knot nematode (Photo: Julie Beale, UK)

Figure 1. Extreme distortion of carrot infected with root knot nematode (Photo: Julie Beale, UK)

Additional landscape ornamental samples included Leucostoma canker on peach; Botryosphaeria canker on pyracantha; and brown spot needle blight on pine.

 

By Julie Beale and Brenda Kennedy, Plant Disease Diagnosticians

 

Posted in Plant Disease Diagnostic Lab