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Late blight

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Late blight

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 : Downy mildew and late blight (oomycetes) (Damage and symptoms on the host)

Scientific name : Phytophthora infestans

Other names : Potato blight

Fungus-like organism (oomycete) affecting mainly potato and tomato. It causes large, oily-looking brown lesions on leaves and stems, often with a whitish growth underneath, and brown rots of tubers and fruit. It spreads very quickly in mild, humid weather and caused the Irish Great Famine of 1845.

Crops affected : Bell pepper, Eggplant, Potato, Tomato

Source : Phytophthora infestans (PHYTIN)[Overview] — EPPO Global Database — EPPO Global Database

This page lists the bio-preparations in the collection that other references associate with this opportunist: Late blight.

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

Associated bio-preparations

Grape seed extract solution

✅ Authorised EU Bio-inputs in the European UnionBio-inputs in BurundiBio-inputs in ColombiaBio-inputs in Costa RicaBio-inputs in IndonesiaBio-inputs in IndiaBio-inputs in KenyaBio-inputs in South KoreaBio-inputs in MoroccoBio-inputs in PeruBio-inputs in the PhilippinesBio-inputs in RwandaBio-inputs in TanzaniaBio-inputs in UgandaBio-inputs in South SudanBio-inputs in the Congo - KinshasaBio-inputs in Somalia

See also

Crops

Eggplant Potato Bell pepper Tomato

Ingredients used

Water Grape Seed Extract

Opportunists of the same crops

Tobacco mosaic virus Cotton bollworm (Helicoverpa) Whitefly Potato tuber moth Stolbur (bois noir) Chilli thrips Root-knot nematodes Tomato leafminer Tomato spotted wilt virus Colorado potato beetle Alternaria (early blight) Aphid

← Referenced opportunists

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