Diseases

Area and zones of severity of Dark-brown spot of sunflower (Alternaria sp .)

Object description Download GIS-layers

Authors:

Object specialist is V.I. Yakutkin, GIS - M.I. Saulich.

Date of creation:

1.12.2004.

Scale:

1:20 000000

Accuracy of map:

Map was created based on the published materials and map of scale 1:40 000 000.

Projection:

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

Basic contents:

Vector map. Area of species distribution and zones of disease severity are shown by polygons.

Accuracy of classifier:

Within the limits of the sunflower area two zones of severity of alternariosis were determined. In the first zone the yield losses are low, reaching 15% on the average. This area includes Central Black Soil Zone, the Middle Volga Basin region, Ural, Western and Eastern Siberia, Kazakhstan. The second zone that was determined is the zone of moderate severity, where yield losses reach 30%. This area includes the Northern Caucasus, Ukraine, and Moldova.

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. The following publications were used to determine the map area: Tikhonov (1975), Kukin (1982), Yakutkin (2001).

Reference citations:

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.].
Kukin V.F. 1982. Diseases of sunflower and their control. Moscow: Kolos. 80 p. (In Russian)
Tikhonov O.I. 1975. Diseases of sunflower. In: Pustovoit V.S., ed. Sunflower. Moscow: Kolos. 401-409 p. (In Russian)
Yakutkin V.I. 2001. Diseases of sunflower in Russia and their control. Zashchita i karantin rastenii, 10: 26-29. (In Russian)

Right and copyright:

All rights reserved. Copyright 2004 © V.I. Yakutkin (VIZR, description), V.I. Yakutkin and M.I. Saulich (VIZR, vector map).

Note:

Picture of the sunflower affected by Alternaria sp. belongs to Maric and co-authors (Maric A., Camprag D., Masirevic S. Bolesti i stetocine suncocreta i njihovo suzbijanje. Nolit. Beograd, 1987, 379 p. Tablo IV: 1. Simptomi na listu; 4. Na stablu; 6. Na glavici.