nectria canker or coral-spot, nectria cinnabarina

agriculture and bark biology branch canker center cinnabarina control coral danger disease diseased farming forest fungal fungi fungicide fungus garden gardening green grow hibisus home infection infest irrigation macro microorganism mushroom nature nectria nursery orange parasite pathogen pathology pest pesticide phytopathology plague plant problem protection science spores spot symptoms tree twig wet wood