shot hole disease stigmina carpophila of cherry laurel -prunus

agriculture and biology blumeriella carpophila carpophilum cercospora cherry clasterosporium control danger disease diseased farming fungi fungicide fungual fungus gaapi garden gardening green grow hence hole home infection infest irrigation laurel laurocerasus leaf macro microorganism mold mould nature parasite pathogen pathology pellets pest pesticide phytopathology plague plant problem protection prunii prunus pseudomonas science shot shotgun shothole spores stigmina summer symptoms syringae wet xanthomonas