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Causes

Causes

Causes

Disorders

Champignons/Oomycètes

 

Colletotrichum coccodes 

Black dot

Helminthosporium solani

Silver scurf

Phytophthora infestans

Phytophthora erythroseptica,

Late blight

Pink rot

Pythium spp.

Leak rot

Polyscytalum pustulans

Skin spot

Rhizoctoniacrocorum

Violet root rot

Rhizoctonia solani

Black scurf

Rhizoctonia corky lesions

Dry core

Cracks & Deformations

Synchytrium endobioticum

Deformations

Spongospora subterranea

 

Powdery scab

Deformations

Bactéries/Actinomycètes

 

Streptomyces spp.

Common scab

Netted  scab

Russet scab

Virus et viroïdes

 

PVYNTN (Necrotic Potato Virus Y )

PMTV (Potato Mop Top Virus)

TRV (Tobacco Rattle Virus)

PSTVd (Potato Spindle Tuber Viroid)

PTRND

Spraing, cracks & deformation

Spraing

cracks & deformation

Ravageurs

 

Globodera spp.

PCN pitting

Meloidogyne spp.

RKN galls

Slugs (Arion spp., Deroceras spp.)

Slug holes

Agriotes spp.

Wireworms holes

Phtorimaeaopercullela

Tuber moth

Epitrix spp.

Potato Flea beettle

Causes non parasitaires

 

Due to climatic factors 

Cracks and deformations

Enlarged lenticells

Due to phytotoxicity

Cracks and deformation

CIPC toxicity

Modification date : 24 July 2023 | Publication date : 14 February 2013 | Redactor : K. Bouchek, C. Chatot, Y. Le Hingrat & S. Wale