Crops

The cultivated area of yellow flower alfalfa (Medicago falcata L.).

Object description Download GIS-layers

Authors:

The experts - Dzyubenko N. I., E. A. Dzyubenko.
The GIS-Expert - Dzyubenko A. N.

Date of creation:

24.12.2003

Scale:

1:20,000,000.

Exactness of map:

The map was created using maps to the scale of 1:25,000,000-1:40,000,000.

The projection:

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

Basic contents:

Map is a vector file consisting of polygons.

Exactness of classifier:

Polygons are based on published sources, political boundaries and ecological descriptions.

Method of map construction:

The mapped, cultivated area of Medicago falcata is based on agro-climatic, natural and economical factors within the former USSR. The vast information on the species published by the state press was analyzed. The final map was constructed by generalizing regional maps, arable-land maps (dark blue polygon), and a map of lands permitted for cultivation, excluding non-arable lands (light blue polygon). Only those lands where Trifolium hybridum is used in crop rotation were taken into account.

Sources of data:

Catalog of state-permitted cultivars of agricultural crops. 1969. - M.: Kolos, 489 pp. (in Russian).
Catalog of state-permitted cultivars of agricultural crops. 1971. - M.: Kolos, 488 pp. (in Russian).
Catalog of state-permitted cultivars of agricultural crops. 1974. - M.: Kolos, 480 pp. (in Russian).
Catalog of state-permitted cultivars of agricultural crops. 1985. - M.: Kolos, Vol 3. - 489 pp. (in Russian).
Catalog of agricultural crop cultivars permitted in Byelorussia. 1985. - Minsk: Uradjai, 176 pp. (in Russian).
State register of breeding achievements permitted for utilization. Plant cultivars. 2003. - M.: - 236 pp. (in Russian).
The register of plant cultivars in Ukraine. 1996. - Kiev: Urojai, 259 pp. (in Russian).

Rights and copyrights:

Copyright on the map and its description belongs to its authors;
Copyright on the photos belongs to Dzyubenko N. I.