Diseases
Distribution and damage zones of Early Blight of Potato Alternaria solani Sor.
Object description Download GIS-layers
Authors:
Specialist-biologist M.M. Levitin,GIS-specialist M.I. Saulich
Date of creation:
28.08.2004Scale:
1: 20 000 000.Accuracy of map:
Map was created based on materials of map of natural scale 1:33 000 000.Projection:
"Alber's Equal Area Conic ", 9, 1001, 7, 100, 0, 44, 68, 0, 0Basic contents:
Vector map. Area of species distribution and zones of disease severity are shown by polygons.Accuracy of classifier:
The disease is spread everywhere throughout the zones of potato cultivation. There were three zones of disease severity determined. The zone of low disease severity is characterized by up to 20% leaf damage. The zone of moderate severity, with 20 to 50% leaf damage. The zone of high severity, with more than 50% leaf damage.Method of map production:
Scientists were given maps with boundaries of Oblasts and arable lands. After reviewing historic literature, species distribution was hand drawn on maps. Each year Early Blight is found in Volga-Vyatski, Central and Black soil areas and Far East regions (Volovik & Litun, 1975). Zones of disease severity were determined according to the following sources: Volovik & Gulyukina (1969), Volovik & Litun (1975), Yagneshko (2000). Early blight is characterized by very high damage in the North East region of the European part of Russia, in Baikal zone and in the Far East. The moderate severity zone of the disease is observed in Central Russia (Volovik & Gulyukina, 1969). If data were on the Oblast-level, distribution is on the Oblast level. In some cases, Oblast.s are further refined by boundaries of the Arable Land Map (Koroljeva et al., 2003). Hand drawn maps were scanned, georeferenced and vectorized.Reference citations:
Koroljeva IE, Vilchevskaya EV, Ruhovich DI. 2003. Digital Arable Land Map. Laboratory of Soil Information of the Dokuchaev Soil Institute, Moscow, Russia [Based on: Yanvareva LF. (ed.), Martynjuk KN., Kisileva NM. 1989. Map of Land Use, Faculty of Geography, Moscow State University, Moscow, Russia.].Kvasnyuk N.Y., Kozlovski B.E. 1985. Early Blight of Potato. Plant Protection, 11: 27-28.
Levkina L.M. 2003. Genus Alternaria Nees. News in systematics and nomenclature of fungi. Moscow: National Academy of Mycology. 276-303 p. (In Russian)
Volovik A.S., Kladova A.I. 1969. Fungal diseases of potato. Distribution of pests and diseases of agricultural plants in Russia in 1968 and forecast of their appearance in 1969. Moscow: Rosselchozizdat. 126-129 p.
Volovik A.S., Litun B.P. 1975. Damage of potato diseases. Plant Protection, 7: 4-5.
Yagneshko D.I. 2000. Early Blight of Potato. Achova Raslin, 3: 21-22. (In Russian)