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Title
Title:
Cereals - Yield
SubTitle:
Subregional level
Filename:  
sreg_cereals_yield
 
 
 
General Description
Abstract:
Average yield of cereals includes cereals grown for feed and seed. Typically, the yield value is not recorded and is instead calculated by dividing production by the area harvested. For a complete definition, please refer to the web page maintained by FAOSTAT: http://www.fao.org/waicent/faostat/agricult/pr_ele-e.htm. Cereals comprise all cereals harvested for dry grain, exclusive of crops cut for hay or harvested green. Cereals are classified according to their genus. Examples of cereals include: wheat, rice, barley, maize, rye, oats, millet, sorghum, buckwheat, and quinoa. For a complete listing and description, please refer to the web page maintained by FAOSTAT: http://www.fao.org/waicent/faoinfo/Economic/faodef/FDEF01E.HTM#1.02. Further information on these data and the Food and Agriculture Organization can be obtained at: http://www.fao.org.
Purpose:
The Food and Agriculture Organization of the United Nations (FAO) provides annual statistics, on a world-wide basis, on all important aspects of crop and livestock production. Coverage is provided on land use, irrigation, human population, index numbers of agricultural production, major crops, livestock numbers, livestock products, food supply, and means of production for individual countries, continents, and the world.
Units:
Hectograms per Hectare
GEO Theme:
Land
GEO Data Category:   
Agricultural Production
Type:
Data downloads
Subtype:
-----
Language:
English
Status:
Complete
Maintenance:
Annually
 
 
 
Keywords
GEMET Theme:
Agriculture
Free Keywords:
Agriculture, cereals, yield, subregional level
 
 
 
Online Reference
URL:
http://apps.fao.org
File Format:
Excel spreadsheet
 
 
 
Spatial Reference
Coverage:
World
Coordinates:
 
North
90
 
West -180
 
180 East
 
-90
South
 
Region:
World
Subregion:
-----
Resolution:
Subregion
 
 
 
Temporal Reference
Covered Time:
1961-2000
 
 
 
Responsability
Person:
Jaap Van Woerden
Organization:
UNEP/DEWA/GRID-Geneva
Address:
11, chemin des Anemones
 
 
Postal Code:
1219
City:
Chatelaine
State:
Geneva
Country:
Switzerland
Phone:
+41 22 917 82 94
Fax:
+41 22 917 80 29
Email:
geo@grid.unep.ch
 
 
Publisher:
UNEP/GRID
Publ. Place:
Geneva
 
 
Publ. Year:
2001
Data Source:
FAOSTAT
Data Provider:
FAO
Copyright:
UNEP/GRID
User Constr.:
Public
 
 
 
Metadata Information
Person:
Gregory Giuliani
Organization:
UNEP/DEWA/GRID-Geneva
Address:
11, Chemin des Anemones
 
 
Postal Code:
1219
City:
Chatelaine
State:
Geneva
Country:
Switzerland
Phone:
+41 22 917 82 94
Fax:
+41 22 917 80 29
Email:
geo@grid.unep.ch
 
 
Date:
20020121
 
 
 
 
 
GIS Data Info
Projection:
-----
 
 
Min. Scale:
-----
Max. Scale
----- -----
Data Resol.:
-----
Data Format:
-----
 
 
 
Statistics Data Info
Aggregation method
Mehtod:
Weighted average
Weight factor:
Area Harvested
Comments:
The data is only aggregated if at least 75 % of the observations are available (i.e. % of population or % of area or % of countries) on an annual basis. The value "-9999" corresponds to "No Data".
 
Interpolations/Extrapolations
Interpolations:
None
Extrapolations:
None
Method:
Other
Comments:
-----
 
Calculated pre 1991-1992 relative country share
Former USSR:
Aggregations only
Former Yugoslavia SFR:
Aggregations only
Former Czechoslovakia:
Aggregations only
Former Ethiopia:
None
Comments:
Pre-1991 realtive shares of the 15 republics of the former USSR calculated based on the data available after 1991. The calculated values relate to the regional/subregional and global aggragations only. Pre-1992 realtive shares of the Czech Republic and Slovakia of the former Czechoslowakia calculated based on the data available after 1992. The calculated values relate to the regional/subregional and globa aggragations only. Pre-1991 realtive shares of the 5 republics of the former Yugoslavia SFR calculated based on the data available after 1991. The calculated values realte to the regional/subregional and global aggregations only.
 
General comments
Country notes:
Data for Anguila are inculded with those of Saints Kitts and Nevis. Data for Belgium include those for Luxembourg. Data for China inculde those for Taiwan. Data for East Timor are included in those of Indonesia. Data for Eritrea before 1993 are shown under Ethiopia. Data for Saint Helena include those for Ascension and Tristan da Cunha.
Definitions:
Cereals are generally of the gramineous family and, in the FAO concept, refer to crops harvested for dry grain only. Crops harvested green for forage, silage or grazing are classified as fodder crops. Also excluded are industrial crops, e.g. broom sorghum (Crude organic materials nes) and sweet sorghum when grown for syrup (Sugar crop nes). For international trade classifications, fresh cereals (other than sweet corn), whether or not suitable for use as fresh vegetables, are classified as cerreals. Cereals are identified according to their genus; this category includes: heat rice, paddy, barely, maize, pop corn, rye, oats, millet, sorghum, bickwheat, quinoa, fonio, triticale, canary seed, mixed grain and cereals nes. Yield represents the harvested production per unit of the harvested area for crop products. In most of the cases yield data are not recorded but obtained by dividing the data stored under production element by those recorded under element: area harvested.
Comments:
Copyright c 2001 (Aggregations) United Nations Environment Programme/DEWA/GRID-Geneva. Data aggregation made by Andrea DeBono and Ola Nordbeck (UNEP/DEWA/GRID-Geneva).