Symptoms range from obscure names such as blight or blasting to more descriptive terms like leafspots or galls. The agents responsible for disease, called pathogens, include fungi, bacteria, viruses, nematodes, and parasitic high plants. Some pathologists include abiotic agents such as air pollution and pesticide injury in the list of pathogens. Most of the aforementioned pathogens encountered affect a wide variety of commodities across the Virginia. Fusarium cankers have been detected on quince, Platanus sp.
Bacteria are the second most reported pathogens with Pseudomonas syringae heading the list.
This organism is responsible for tip blight of Ilex spp. and stem cankers of Forsythia at several nurseries. All rights reserved.