Area and severity zones of Spongospora subterranea (Wallr.) Lagerh.

Object description Download GIS-layers


Object specialist V.I.Yakutkin,
GIS- specialist M.I.Saulich.

Date of creation:



1:20 000 000.

Accuracy of map:

It is created on information taken from the open-published literature and maps of scale 1:33 000 000.


"Alber`s Equal Area Conic for the USSR",9,1001,7,100,0,44,68,0,0.

Basic contents:

Vector map has three layers, where the potato area and severity zones of Powdery Scab are shown by polygons.

Accuracy of the classifier:

In the potato area two zones of different severity of S.subterranea are determined. The first is the zone of its low severity, where number of affected tubers is 3% and less (Kirov and Kaluga Regions of Russia). The second zone has moderate severity of the disease, where its occurrence on tubers reaches 10% (Belarus, Leningrad region of Russia).

Procedure of map drawing:

Published materials are used for map drawing (Gorlenko, 1968;Volovik et al., 1971; Sizova,1976). Zones of different severity of the Powdery Scab of potato are established after known data (Gorlenko,1968; Volovik et al., 1971). The registration and vectoring of raster map are carried out by standard means of GIS-tecnologies.

Sources of the data:

Gorlenko M.V. 1968. Powdery scab of potato. Agricultural phytopathology. Moscow: Vysshaya shkola, p.260-261 (in Russian).
Sizova T.P. 1976. Division Myxomycota. Fungi. Moscow: Prosveshchenie, p.7-12 (in Russian).
Volovik A.S., Borisenok A.B., Erokhina S.A., Zakharova T.I. 1971. Fungal diseases of potato. In: Polyakov I.Ya., Minkevich I.I., eds. Pests and diseases distribution on agricultural crops in RSFSR in 1970 and the forecast of their appearance in 1971. Moscow: MSKH RSFSR, VIZR: p.168-178 (in Russian).

Right and copyright:

All rights reserved. Copyright 2005© V.I.Yakutkin (VIZR; raster map, description) & M.I.Saulich (VIZR; vector map).


The photo of the affected potato tuber by Spongospora subterranea belongs to J.Sekach (Ginfner K., Chak Z. 1958. Diseases and damage to potato tuber. Budapest: Academy of Sciences of Hungary, p.24-25) (in Russian).

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