Apple scab

Venturia inaequalis Apple scab General Venturia inaequalis is an ascomycete fungus that causes apple scab disease Life cycle and appearance of Apple scab Venturia inaequalis overwinters in the form of

Loose smut of barley

Ustilago nuda (Ustilago segetum var. nuda, Ustilago nuda f.sp. hordei) Loose smut of barley General Ustilago nuda f.sp. hordei affects barley and can destroy a large proportion of the crop. It is also

Fusarium wilt

Fusarium oxysporum Fusarium wilt 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 w

Black rot of carrots

Alternaria radicina Black rot of carrots General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary

Damping-off

Pythium aphanidermatum Damping-off General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress, caused for

Powdery mildew

Erysiphe, Podosphaera, Oidium, Leveillula spp. Powdery mildew General Powdery mildew is a fungal disease that is caused by many different species of fungi such as Erysiphe, Podosphaera, Oïdium, Leveil

Downy mildew of Cucurbits

Pseudoperonospora cubensis Downy mildew of Cucurbits General Pseudoperonospora cubensis is a plant pathogen causing downy mildew on cucurbit crops like cucumber, cantaloupe, pumpkin, watermelon and sq

Phytophthora blight

Phytophthora infestans Phytophthora blight General Late blight (Phytophthora infestans f.sp. infestans) is also known as Phytophthora blight, tomato blight, early / late blight tomato, potato blight a

Charcoal rot

and on crop residues as microsclerotia. In corn stalks, survival of up to 1.5 years has been reported. The density of the microsclerotia in the soil is directly

Loose smut of wheat

Ustilago tritici (Ustilago segetum var. tritici, Ustilago nuda f.sp. tritici) Loose smut of wheat General Ustilago nuda f.sp. tritici is a basidiomyceteous fungus that affects wheat. It is also known