Distribution and area of disease incidence for Nigrospora Ear Rot on maize (Nigrospora oryzae Petch.)

Object description Download GIS-layers


Specialist-biologist - E.I. Gultyaeva, GIS-specialist - M.I. Saulich.

Date of creation:



1:20 000 000.

Accuracy of map:

Created using maps of natural scale 1: 40 000 000.


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

Basic contents:

Vector map. Consists of polygons characterizing the distribution of the species and area of disease severity on maize.

Accuracy of classifier:

The distribution of Nigrospora Ear Rot on maize is based on the compilation of open published materials (Vinogradova, 1960); (Borovskaya, 1989); (Kirimilashvili, 1969); (Kulik, 1956); (Nikolaeva, 1979); (Sibiryak, 1961), (Susidko, 1975). Areas of disease occurrence are according to the following sources: (Kulik, 1956); (Suisidko et al., 1975). Disease severity is determined by the percent of infected grains in cobs and ranges from (Voronezh, 1976): weak (less than 5%), moderate (5 . less 20%), and high (more than 20%). In forest-steppe zone of Ukraine (Kulik, 1956), disease severity is classified as weak (yields decreased to 9%); moderate (yields decreased 10-25%) and high (26-28%). Overall distribution of disease was based on maize growing regions.

Method of map production:

Published literature was reviewed, including Atlases, monographs and papers. 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:

Susidko P.I., Gitsenko G.V., Nemlienko F.E. 1975. Integrated system of measures for maize protection from pests, diseases and weeds. Moscow: Kolos. 47 pp. (In Russian)
Lakhidov A.I., ed. 1976. Methods of estimation and prediction of diseases and pests development for field crops in Central Black-Earth Region. Voronezh: Tsentral.no-Chernozemnoe Publishing House. 274 p. (In Russian)
Hawksworth D.L., Kirk P.M., Sutton B.C., Pegler D.M. 1995. Ainsworth & Bisby.s Dictionary of the Fungi. Kew: CAB International. 616 pp.
Borovskaya M.F., Matichuk V.G. 1989. Diseases of maize. Technology of planning and maize and sorghum yield. Kishinev: Shtiintsa. 119-126 pp. (In Russian)
Borovskaya M.F., Matichuk V.G. 1990. Diseases of maize. Kishinev: Shtiintsa. 132-138 pp. (In Russian)
Kirimelashvili I.S., Dolidze M.I. 1969. Materials for studies of Nigrospora Ear Rot in Georgia. Trudy instituta zashchity rastenii. Tbilisi. V.21: 92-93 (In Russian)
Kulik T.A. 1955. Features of pathogenesis of Nigrospora Ear Rot of maize and substantiation of protection measures. Summary of Dissertation for Biological Science for PhD. 18 pp. (In Russian)
Kulik T.A. 1956. Nigrospora Ear Rot of maize in Ukraine. Ukrainskii botanicheskii zhurnal 13(3): 87-91 (In Russian)
Nemlienko F.E. 1957. Diseases of maize. Sel.khozgiz. 48-57 pp. (In Russian)
Nikolaeva N.F., Skripnyuk V.N. 1979. Diseases of maize in Stavropol. Territory and protection measures. New approaches to eliminating pests and diseases of corn. Dnepropetrovsk. 132-135 pp. (In Russian)
Peresypkin V.F. 1989. A gricultural phytopathology. Moscow: Agropromizdat. 480 pp. (In Russian)
Sibiryak L.A. 1961. Pests and diseases of maize in Bashkortostan. Proceedings of Bashkirskogo Selskkohozyays-zvennogo Institute. Ufa. V.10(1): 211-216. (In Russian)
Susidko P.I., Gritsenko G.V., Nemlienko F.E. 1975. Integrated system of measures for maize protection from pests, diseases and weeds. Moscow: Kolos. 47 pp. (In Russian)
Vinogradova N.I. 1960. Diseases of maize in steppe part and southern forest-steppe of western Siberia. Proceedings on reports of universities and scientific institutes of Siberia and the Far East. Omsk. 182-186 pp. (In Russian)

Right and copyright:

All rights reserved. Copyright 2003© E.I. Gultyaeva & M.I. Saulich (vector map and description); E.I. Gultyaeva (photo).

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