Diseases

The Area of Rhynchsporium secalis (Oudem.) Davis - causal agent rye scald.

Object description Download GIS-layers

Author(s):

Object specialist - A.P. Dmitriev, GIS-specialist I.A. Budrevskaya.

Date of creation:

16.11.2003.

Scale:

1:20.000.000.

Accuracy of map:

Based on published literature narratives.

Projection:

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

Basic contents:

Vector map. Zones of distribution and harmfulness are shown by polygons.

Accuracy of classifier:

All regions represent the distribution of disease, where Fusarium head blight was revealed according to scientific publications. Area of high disease severity is based on as annual appearance of the disease and resulting yield restriction.
Area is divided into zones of strong (infection up to 60-80%) and moderate (infection up to 30%) disease development according to published data.

Method of map production:

Published literature was reviewed, including Atlases, monographs and papers. Occurrence data were obtained from herbarium specimens, floras, monographs and papers. Zones differing in the development of disease were based on the analysis of the data published in various administrative regions of Russia (Nazarova & Polyakova, 1996); (Nazarova et al., 1998); (Buga et al., 1997). Disease occurrence was reported by administrative region (State register, 2002). Area of distribution was extended to all agroecological regions, based on the agroecological classification of administrative regions reported for disease. Area of rye is designated on the map by regions where the area of rye is more than 5 %. Due to this, the disease area falls outside the limits of crop area. Field observation by specified plant pathologists and climatic conditions favorable for disease development support distribution in areas where Rye is insignificant. Data were then compiled through scanning and geo-referencing to develop a composite vector map. The biologist, together with the GIS specialist, drew a composite disease distribution area based on compiled data.

Reference citations:

Buga S.F., Ushkevich L.L., Bojarchuk V.E., Padyna A.A. 1997. Harmfulness of rye scald. Actual problems of phytovirology and plant protection. Minsks. 57-58 pp. (In Russian)
Nazarova L.N., Devjatkina G.A., Poljakova T.M., Jokhova T.P. 1998. Method of Rhynchsporium secalis (Oudem.) Davis inoculum reception for artificial infectious background. Mycology and Phytophatology 32(6): 83-88. (In Russian)
Nazarova L.N., Polyakova T.M. 1996. Rye protection against scald. Plant protection and quarantine. #6: 20-21. (In Russian)
The state register of the breeding progress admitted to use. 2002. Moscow. 214 pp. (In Russian)

Right and copyright:

Copyright on this map and description belongs to its authors,
Copyright for fungus belongs to A.P. Dmitriev.