Diseases
Distribution and severity of Maize Seedling Blight (Fusarium spp.)
Object description Download GIS-layers
Authors:
Specialist-biologist M.M. Levitin,GIS-specialist M.I. Saulich
Date of creation:
18.03.2005Scale:
1:20 000 000Accuracy of map:
Map was created based on materials of maps with natural scale 1: 33 000 000.Projection:
"Alber's Equal Area Conic for the USSR", 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 zones of disease severity were determined according to results of the analysis of the following published materials: Ivashchenko et al. (2000), Kalashnikov & Shapiro (1962), Sokirko & Balde (1985). The zone of high disease severity is characterized by 40% affected plants (Ivashchenko et al., 2000). The disease is most harmful in the Kuban region (Sokirko & Balde, 1985). It is considered that other regions are located in the zone of low disease severity, where 14% of plants are affected (Ivashchenko et al., 2000).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.Reference citations:
Ivashchenko V.G., Shipilova N.P., Sotchenko E.F. 2000. The most harmful disease of seeds and ears of maize. Agro XXI 7: 6-7. (In Russian)Kalashnikov K.Ya., Shapiro I.D. 1962. Pests and diseases of corn. Leningrad: Sel.khozgiz. 189 p. (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.].
Sokirko V.P., Balde Ch.A. 1985. Root rot of maize . harmful disease on Cuban. In: Zenyuk V.A., ed. Improvment in agronomic practices of maize growing in Krasnodar region (Proc. Kuban SKHI, 255(283)). Krasnodar: Kuban SKHI. 33-36 p. (In Russian)