dead bud symptom, sunken canker bacteria canker in cherry tree

agriculture bacterialncanker biology blight botany bud canker cherriesplum cherry closeup common control damage dead disease diseased environment farm farming flower fruit fungal fungi fungicide fungus garden gardening green grow growing infection leaf leaves macro mold natural nature outdoor own parasite pathogen pathology pest phytopathology phytophthora plant problem science spores spot spring stem stone summer sunken sweet symptom symptoms tree trunk unhealthy your