Plant diseases significantly threaten agricultural productivity, necessitating accurate identification and classification of plant lesions for improved crop quality. Citrus plants, belonging to the Rutaceae family, are highly susceptible such as citrus canker, black spot, devastating Huanglongbing (HLB) disease. HLB, caused by gram-negative proteobacteria strains, severely impacts orchards glob...

To study impacts of sudden oak death (SOD), a lethal bark canker disease caused by Phytophthora ramorum, we established permanent plots in Sonoma County forest types at risk of SOD. Baseline stand and tree health data were collected in 2001 and the plots were reassessed in 2004. The 250 plots (0.02 ha each) were located at 11 study locations in stands containing Quercus agrifolia, Q. kelloggii,...