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Potatoes
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.
23 March 2022
Rubbery rot is caused by the fungus Geotrichum candidum. It is more commonly found in first early and second early crops.
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.
24 October 2019
Pink rot (Phytophthora erythroseptica) can be devastating especially in hot dry years however wet soil is required for infection.
7 January 2022
Viruses described in this section cause a range of foliar symptoms from none (latent) through very weak to a pronounced mosaic with some distortion of the leaflets.
14 February 2022
Gangrene is a slow growing fungal disease of stored potatoes favoured by cool climates.
17 December 2021
Common scab caused mainly by Streptomyces scabiei is an unsightly blemish disease that can affect any crop where tubers experience a dry surface during the critical stage of 3-6 weeks after tuber initiation.
23 March 2022
Potato brown rot poses a serious threat to GB potato production and vigilance is required to prevent its introduction and spread