coral-spot nectria canker

agriculture and bark biology branch canker center cinnabarina control coral danger disease diseased drip drop farming forest fruit fungi fungicide fungual fungus garden gardening green grow home infection infest irrigation leaf macro microorganism mold mould mushroom nature nectria nursery orange parasite pathogen pathology pest pesticide phytopathology plague plant problem protection rain rotted science spores spot summer symptoms tree twig water wet wood