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15 December 2020
Watery Wound Rot or Leak is a vigorous rot of lifted tubers caused by the fungus Pythium ultimum. It is widespread and common but only occasionally serious in a crop.
24 October 2019
Tubers, stolons and occasionally leaf stalks affected, but not roots. Tubers may bear cauliflower-like tumours at the eyes or whole tuber may become shapeless warted mass.
24 October 2019
Violet Root Rot (Helicobasidium purpureum) is a disease of some vegetable crops including potatoes.
14 February 2022
Verticillium wilt is a fungal disease of the vascular tissue of potato and most commercial cultivars are susceptible.
24 October 2019
TNV is a rare tuber blemish disease with no haulm symptoms. The disease is also known as ‘ABC’ disease named after three symptom categories first described in the Netherlands.
14 February 2022
TRV is one of two viruses causing spraing in potato that is most commonly associated with tuber internal blemishing.
24 October 2019
PMTV is one of two viruses causing spraing in potato. Infections are commonly associated with tuber internal blemishing (see also TRV). This is a significant cause of rejections of both ware and processing crops. Symptoms do not increase during storage.
7 January 2022
Skin spot (Polyscytalum pustulans) is a fungal disease of potato tubers which is generally symptomless until after approximately 2 months of storage, when the infected tissue begins to show spots on some varieties.
7 January 2022
Silver scurf (Helminthosporium solani) is a ubiquitous fungal blemish disease of potatoes.
14 February 2022
Ring rot is caused by the bacterium Clavibacter michiganensis subsp. sepedonicus. The disease is favoured by cooler climates and, already established in northern and Eastern Europe, could readily establish under UK conditions.
7 January 2022
Powdery scab (Spongospora subterranea) is a fungal blemish disease of potatoes. The “powder” is comprised of spore balls (cystosori) that are released into the soil and can survive up to ten years.
14 February 2022
PLRV was once the most common virus in seed stocks and also caused the greatest yield loss in ware crops.