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Cercospora leaf spot of beet

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Cercospora leaf spot of beet

Fungus

What is an opportunist?

An "opportunist" is a population (fungi, bacteria, insects…) that takes advantage of a favourable environment to settle in, multiply and feed on it. It often develops when the natural defences of the affected organism are weakened — for genetic reasons or linked to context (water stress, deficiencies, nutritional imbalances, overcrowding…). This is typically the case in monocultures, where a single host plant, uniform and present in large numbers, offers ideal ground for it to spread.

Identification key : Leaf spots and scabs (fungi) (Damage and symptoms on the host)

Scientific name : Cercospora beticola

Other names : Beet leaf spot

Fungus of plants in the genus Beta: sugar beet, table beet and Swiss chard. It forms small round grey spots with a reddish border that merge and dry out the leaf. It thrives in hot, very humid weather; spores are spread by rain and wind and the fungus survives in crop debris.

Crops affected : Beet, Sugar beet, Swiss chard

Source : Cercospora beticola (CERCBE)[Overview] — EPPO Global Database — EPPO

This page lists the bio-preparations in the collection that other references associate with this opportunist: Cercospora leaf spot of beet.

Warning: the associations between recipes and opportunists come from other references (traditional practices, publications, user feedback). They are neither a recommendation nor a claim of effectiveness. There is no certainty regarding the preparation, application and use of these bio-preparations. See the regulations

No published recipe is associated with this opportunist yet.

See also

Crops

Swiss chard Beet Sugar beet

Opportunists of the same crops

Slugs and snails Stolbur (bois noir) Cotton bollworm (Helicoverpa) Tomato spotted wilt virus Pink hibiscus mealybug Brown marmorated stink bug Aphid

← Referenced opportunists

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