Diseases
Area of distribution and severity zones of the Covered Smut of Sorghum (Sphacelotheca sorghi) .
Object description Download GIS-layers
Authors:
Object specialists A.I. Silaev,GIS-specialist M.I. Saulich.
Date of creation:
10.02.2008.Scale:
1:20 000 000.Accuracy of map:
It is created on information taken from the open published literature and maps of scale 1:20 000 000 and 1: 33 000 000.Projection:
"Alber's Equal Area Conic for the USSR", 9, 1001, 7, 100, 0, 44, 68, 0, 0.Basic content:
Vector map consisting of 4 layers. Area and zones of severity are shown by polygons.Accuracy of the classifier:
Within the limits of area, the zones of severity are allocated according to the criteria described by A.I.Silaev & A.E.Chumakov (1979). In the zone of low severity, crop losses are usually less than 1%; in the zone of moderate severity, crop losses can reach 1-5%, while in the zone of high severity they can exceed 5%.Method of map production:
The map is compiled by results of the analysis of the open published materials (Gutner, 1941; Silaev, Chumakov, 1979; Silaev, 1987; Silaev,. 2005). The Covered Smut of Sorghum is distributed all over the territory of the former USSR (Doshimov, 1982). Range of the disease occurrence coincides with area of its host crop, corrected after vector map compiled by N.V. Terekhina (2005). The zone of low severity includes northwestern Ukraine, Baltic States, Belarus, and territory of Russian Federation eastward to Altai and Kemerovo, coinciding with regions of growing the Sudan grass northward of growing Sorghum saccharatum and Sorghum bicolor zones. The zone of moderate severity includes Ukraine, Chernozem regions of Russian Federation, the north, east and southeast of Kazakhstan, Kirgizstan, and the south of Tadzhikistan. Moreover, the disease occurs ordinarily in regions of the Sudan grass growing in eastern Russian Federation to Primorskii Territory. The zone of high severity includes the North Caucasus, Lower and Middle Volga regions.Reference citations:
Doshimov U.D. 1982. Sorghum smut fungi. Tashkent: Fan, 68 p. (in Russian).Gutner L.S. 1941. Smut fungi. Moscow, 383 p. (in Russian).
Silaev A.I. 1987. Harm of head smut diseases in sorghum. In: Ecological aspects of harm of diseases on cereal crops. Issue of sci. repts., Leningrad: VIZR, p. 70-75.
Silaev A.I. 2005. Biologic and toxicological substantiation of the adaptive protection of sorghum from the smut disease in the Volga region. PhD Thesis. St.Petersburg: VIZR, 47 p. (in Russian).
Silaev A.I., Chumakov A.E. 1979. Sorghum head smut in Volga Region: distribution, harmfulness and host-plant resistance of samples. Mycology and Phytopathology 13(5): 414-418 (in Russian).
Terekhina N.V. 2005. The area of sweet sorghum (Sorghum saccharatum Pers.). www.agroatlas.ru
Terekhina N.V. 2005. The area of broomcorn (Sorghum bicolor). www.agroatlas.ru
Terekhina N.V. N.V. 2005. The area of Sudan grass (Sorghum sudanense (Piper.) Stapf). www.agroatlas.ru