Crops

The cultivated area of black medic (Medicago lupulina L.).

Object description Download GIS-layers

Authors:

Scientists - Dzyubenko N.I., E.A. Dzyubenko.
GIS specialist- Dzyubenko A.N.

Date of creation:

24.12.2003.

Scale:

1:20,000,000.

Accuracy of map:

The map was created using maps that had the following scale 1:25,000,000-1:40,000,000.

Projection:

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

Basic contents:

Vector file consisting of polygons.

Accuracy of classifier:

Polygons are based on literature sources, political boundaries and ecological description.

Method of map production:

The cultivated area of Medicago lupulina was determined based on agroclimatic, natural and economic principles of former USSR territory division. Information on the problem published in the open press was analyzed. The final map was constructed by generalization of region maps, arable-land map (dark blue polygon), map of lands permitted for cultivation without non-arable-lands (light blue polygon). Only those lands where Trifolium hybridum took place during crop rotation were taken into account.

Reference citations:

Catalog of agricultural crop cultivars permitted in Byelorussia. 1985. - Minsk: Uradjai, 176 pp. (in Russian).
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).
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 descriptions belong to its authors;
Copyright on the photos belong to Dzyubenko N. I.