General Grey mould ( Botryotinia fuckeliana / Botrytis cinerea ) is a commonly found fungus in many environments. It survives in plant parts like bulbs and crop residues or as sclerotia (drought- and
General Pseudoperonospora cubensis is a plant pathogen causing downy mildew on cucurbit crops like cucumber, cantaloupe, pumpkin, watermelon and squash. Damage symptoms Downy mildew pathogens infect m
General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species are considered weak pathogens and can only infect
General Powdery mildew is a fungal disease that is caused by many different species of fungi such as Erysiphe, Podosphaera, Oïdium, Leveillula. Damage symptoms Powdery mildew symptoms are fairly simil
General Clavibacter is a quarantine organism in Europe, which means that strong efforts are used to prevent the bacterium from entering. When the occasional infection is found, strict measures are tak
About Tobacco thrips Thrips parvispinus , also known as tobacco thrips, is an insect native to tropical Asia and is widely distributed from East Asia, Northern Australia, and the Solomon Islands. In r
What is apple rust mite? Apple rust mite (Aculus schlechtendali) is a microscopic eriophyid mite that feeds on the leaves and developing fruit of apple trees. Because of its small size, the pest is di
What is apple sawfly? Apple sawfly (Hoplocampa testudinea) is an important early-season pest of apple orchards. Adult sawflies emerge during flowering and lay their eggs in apple blossoms. After hatch
What is San José scale? San José scale (Comstockaspis perniciosa) is one of the most economically important scale insects affecting apple and pear orchards. Both nymphs and adult females feed by inser
What is apple blossom weevil? The apple blossom weevil (Anthonomus pomorum) is an important early-season pest of apple orchards. Adult weevils emerge before flowering and feed on developing buds befor
