Area and zone of severity of Pseudoperonospora cubensis Rostow.

Object description Download GIS-layers


Object specialist L.B. Khlopunova,
GIS-specialist M.I. Saulich.

Date of creation:



1:20 000 000.

Accuracy of map:

Created on the basis of a map of the scale 1: 33 000 000.


"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:

In the disease area the zone of high severity (more than 25% of plants are affected by the Downy Mildew) was outlined. The zone was marked according to the method by Chumakov & Zakharova (1990).

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 disease is widely distributed in all regions of the country where the culture of cucumber is growing in open and protected ground. The greatest harm it causes is in the Far East in Primorskii and Khabarovsk Territories, Amur and Sakhalin Region according to the following sources: Osnitskaya (1970, 1971), Zolotareva (2001), Kuznetsov (1984); in Byelorussia according to Zherdetskaya (2000), Nalobova (1986); in the Krasnodar Territory according to Pavlova (1991); in the Ukraine according to Efimov (1978), Grin.ko (1992, 2003), Gorokhovskii (2002); in Armenia, Georgia and Azerbaijan according to Ragimov (1961), Papoyan (1975); in the Almaty Region of Kazakhstan according to Levitin (1957), where infection of plants reaches 26-100%.

Reference citations:

Chumakov A.E., Zakharova T.I. 1990. Harmfulness of cultural plants diseases. Moscow: Agropromizdat. 127 p. (In Russian)
Efimov M.S., Sklyarevskaya V.V., Ol.khovskaya N.Ya. 1978. Downy Mildew in Ukraine. Zashchita rastenii 12: 37. (In Russian)
Gorokhovskii V.F. 2002. Method of estimation of affection of cucumber by Downy Mildew. Selektsiya i semenovodstvo 1: 27-28. (In Russian)
Grin.ko N.N. 2003. Downy Mildew of Cucumber. Sochi. 68 p. (In Russian)
Grin.ko N.N., Zherdetskaya T.N. 1992. Bioecological features of activator of Downy Mildew of Cucumber. In: Samersova V.F., ed. Protection of plants. Collection of works of Bel. NIIZR. V. 17. Minsk: Bel. NIIZR. 52-61 p. (In Russian)
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.].
Kuznetsov N.N. 1984. Diseases of cucumber in hothouses and bases of its control in the Far East. PhD Thesis. Leningrad: MSKH SSSR, LSKHI. 18 p. (In Russian)
Levitin M.M. 1967. Downy Mildew of Cucumbers. Kartofel. i ovoshchi 3: 36-38. (In Russian)
Nalobova V.L. 1986. Gray Mould Blight and Downy Mildew of Cucumbers in protected ground on the territory of Byelorussia. In: Yurkevich I.D., ed. Botany (researches). V. 27. Minsk: Nauka i tekhnika. 189-191 p. (In Russian)
Osnitskaya E.A. 1970. Diseases of vegetables. In: Polyakov I.Ya., Minkevich I.I., eds. Pests and diseases distribution on agricultural crops in RSFSR in 1969 and the forecast of their appearance in 1970. Moscow: MSKH RSFSR, VIZR. 252-263 p. (In Russian)
Osnitskaya E.A. 1971. Diseases of vegetables. In: Polyakov I.Ya., Minkevich I.I., eds. Pests and diseases distribution on agricultural crops in RSFSR in 1970 and the forecast of their appearance in 1971. Moscow: MSKH RSFSR, VIZR. 187-198 p. (In Russian)
Papoyan F.A., Kostanyan A.V. 1975. Downy Mildew of Cucumbers in Ararat Valley. In: Khodzhoyan K.M., ed. News of agricultural sciences. N. 10. Erevan: Min. SKH Arm. SSR. 61-62 p. (In Russian)
Pavlova T.V., Red.ka A.P. 1991. Forecast of spreading the activator of Downy Mildew. Zashchita rastenii 1: 47-48. (In Russian)
Ragimov U.A. 1961. Downy Mildew of Cucumbers. Protection of plants against pests and diseases. 35 p. (In Russian)
Zherdetskaya T.N. 2000. Severity of Downy Mildew of Cucumber in Byelorussia. In: Soroka S.V., ed. Protection of plants. Collection of works of Bel. NIIZR. V. 19/23 KHIX/XXIII. Minsk: Bel. NIIZR. 118-124 p. (In Russian)
Zolotareva E.V., Migina O.N. 2001. Features pathogenesis of the activator of Downy Mildew of Cucumber in Amur Region. In: Romanova T.A., ed. Works. Agriculture. Animal husbandry. V. 2. Khabarovsk: Rossel.khozakademiya, Dal.. NIISKH. 27-32 p. (In Russian)

Rights and copyrights:

All rights reserved. Copyright 2005 © L.B. Khlopunova & M.I. Saulich (VIZR, vector map, description), L.B. Khlopunova (VIZR, photo).

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