Diseases

The Area of Pyrenofora avenae Ito et Kurib. - causal agent of Helminthosporium (red-brown) leaf spot of oats.

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:

Created on published narrative materials.

Projection:

"Alber's Equal Area Conic 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:

Area is divided into zones of strong infection (up to 50%) and moderate infection (up to 30%) 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. The zones differing in disease development were determined according to: (Motovilin, 2000); (Motovilin & Strigekozin, 2000); (Rassadina, 1973). Disease occurrence was reported by administrative regions (State register, 2002). Area of distribution was extended to all agroecological regions, based on the agroecological classification of administrative regions reported on disease. Area of rye is designated on the map by regions where the area of oat 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 oat 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 weed distribution area based on compiled data.

Reference citations:

Motovilin A.N. 2000. Responsiveness of oats varieties on fungicides application against red - brown spot. Protection and quarantine of plants. #10: 30. (In Russian)
Motovilin A.N., Strigekozin Ju.A. 2000. Estimation of oats basic disease harmfulness. Protection and quarantine of plants. #7: 30. (In Russian)
Rassadina E.Gh. 1973. Cereals leaf spots. Distribution of agricultural crops diseases in USSR in 1968-1972. Leningrad: VIZR. 40 pp. (In Russian)
Shishlova A.M., Shishlov M.P. 2002. Oats diseases in Byelorussia. Agriculture and plant industry. Minsk: BelNIIZK. 165-192 pp. (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.