Diseases
Area and zone of severity of Erysiphe communis f. solani - lycopersici and Leveillula taurica .
Object description Download GIS-layers
Authors:
Object specialist L.B. Khlopunova,GIS-specialist M.I. Saulich.
Date of creation:
12.04.2005Scale:
1:20 000 000.Accuracy of map:
Map was created based on a map of scale 1: 33 000 000.Projection:
"Alber's Equal Area Conic for the USSR", 9, 1001, 7, 100, 0, 44, 68, 0, 0.Basic contents:
Vector map. Area of species distribution and zones of disease severity are shown by polygons.Accuracy of classifier:
In the disease area a zone of high severity (more than 25% of tomato plants are affected by the Powdery Mildew) was outlined. The zone was determined according to a method by Chumakov & Zakharova (1990).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. 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. The disease was recorded in the western part of the former USSR in conditions of protected ground (Latvia and Russia (Saint Petersburg, Vologda, Novgorod and Moscow Regions), Byelorussia, and the Ukraine, developing in the last country also in conditions of open ground according to Gelyuta et al. (1994) and Smetanina (1994)). The Powdery Mildew caused by L. taurica is found in hothouses and in field conditions of Kazakhstan, Armenia, and Krasnodar Territory where it is the most noxious, resulting in a decrease of tomato yields by 50% according to the following sources: Osnitskaya et al. (1968), Papoyan et al. (1980).Reference citations:
Chumakov A.E., Zakharova T.I. 1990. Harmfulness of cultural plants diseases. Moscow: Agropromizdat. 127 p. (In Russian)Gelyuta V.P., Ivanova G.P., Dorofeeva G.P., Belykh E.B., Koretskii P.M. 1994. Taxonomic position of the Powdery Mildew of tomatoes registered in the East Europe. Ukrainskii Botanicheskii zhurnal (Kiev) 51(4): 62. (In Russian)
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.].
Osnitskaya E.A. 1968. Diseases of vegetables. In: Polyakov I.Ya., Chumakov A.E., eds. Pests and diseases distribution on agricultural crops in RSFSR in 1967 and the forecast of their appearance in 1968. Moscow: Rosselkhozizdat. 120-125 p. (In Russian)
Papoyan F.A., Markosyan A.A., Bazhanova N.V., Avetisyan K.V. 1980. Testing of Benamil against the Powdery Mildew of tomatoes. In: Gvritishvili M.N., ed. Materials of the Transcaucasian coordination meeting on plant protection; 15-16 May, 1980; Tbilisi: Gruz NIIZR. 44-46 p. (In Russian)
Smetanina T.I., Filippov A.V. 1994. Progressing disease. Zashchita rastenii 7: 15. (In Russian)