Spongospora subterranea is the causal agent of powdery scab on potato. Though this disease can reduce yield somewhat, the true economic effect is due to the. Spongospora subterranea subterranea. S.s.s. is the cause of powdery scab of potato (early symptoms on young tuber: cauliflower stage;. Infection by Spongospora subterranea of roots of two potato (Solanum tuberosum) cultivars, either very resistant or very susceptible to powdery.


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Serological detection of Spongospora subterranea f.

Powdery scab - Wikipedia

Diagnosis and Identification of Plant Pathogens. First report of detection of Spongospora subterranea f. Iranian Journal of Plant Pathology, 46 1: Maladies et Ravageurs de spongospora subterranea Pomme de Terre Transl.

Michel Magnenat from German: Occurrence of Spongospora subterranea f.

Symptomatic tubers will, therefore, not be accepted for seed 1,3. Management The most effective method for disease control is to avoid the pathogen and use fields without infestations and prevent infestations through spongospora subterranea seed programs.

Spongospora subterranea the pathogen is present, resistant cultivars, pesticides, and cultural control may be necessary.

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Cultural control methods center around spongospora subterranea the available water to prevent spongospora subterranea zoospores from infecting; including irrigating appropriately, using appropriate soil types, and ensuring good drainage.

Long rotations may reduce inoculum levels; however, due to the longevity of the sporosori in the soil, this may not be effective.


Composting may also reduce inoculum, but since temperatures would need to be extremely high, some spores will still remain. Some chemical control has been shown with zinc oxide, fluazinam, mancozeb, and metam sodium 2,3,4.

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Indirect control There is no clear indication of any effect of macro and micro nutrients on the occurence of powdery scab. If diseased tubers are fed to the cattle they have to be steamed first as the resting spores are still infectious after digestion spongospora subterranea will be spread with manure.

Irrigation increases powdery scab especially during spongospora subterranea initiation weeks after planting.


Spongospora subterranea the other hand it is possible to control common scab with irrigation. A good practice spongospora subterranea crop rotation helps not to increase powdery scab but there are several reports that even after more than a spongospora subterranea years cropping period without potatoes there was a severe attack at harvest time.

As different weeds may be alternative hosts of S. White found that thornapple Datura stramonium is a good catch crop for Spongospora subterranea - but this plant is a poisonous weed. Under Swiss conditions oil seed rape, as main or in-between crop, reduced powdery scab incidence Winter and Winiger, There have been no resistant cultivars available on the marked so far.

Powdery scab was not included so far in the main breeding programs.

  • Spongospora subterranea - Wikispecies
  • Spongospora subterranea
  • Powdery scab

Nothing is known about the resistance mechanisms. There may be a relationship between time of tuber skin production, skin quality spongospora subterranea susceptibility.

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