fruit rot of apples

agriculture apple ascomycetes biology brown control crop danger disease diseased domestica european farming fouling fructigena fruit fungi fungicide fungual fungus garden gardening grow growing home infection infest laxa macro malus microorganism mold monilinia mould mummies nature orcharding parasite pathogen pathology pest pesticide phytopathology plague plant pomiculture problem protection pruning pustules repellent rot rotting science shriveled spore spores spot summer symptoms tree