National rankings in agricultural sciences

Data provided by Thomson Reuters from its Essential Science Indicators, January 1999-April 2009

August 13, 2009

 Country Papers CitationsCitations per paper
1Scotland1,762 19,546 11.09
2Finland1,794 19,779 11.03
3The Netherlands4,2 42,849 10.03
4England7,589 74,332 9.79
5Denmark2,733 26,576 9.72
6Sweden2,119 20,593 9.72
7Norway1,492 13,673 9.16
8Israel1,111 10,077 9.07
9Belgium2,822 24,413 8.65
10Switzerland2,3 20,085 8.63
11US40,701 340,262 8.36
13France8,639 70,796 8.19
14Canada7,662 59,2 7.74
15Italy6,719 48,434 7.21
16Portugal1,563 11,071 7.08
17Spain11,584 81,746 7.06
18Greece2,170 15,198 7.00
19Australia7,353 50,376 6.85
20New Zealand2,838 19,338 6.81
The data above were extracted from the Essential Science Indicators database of Thomson Reuters. This database, currently covering the period January 1999-April 2009, surveys only journal articles (original research reports and review articles) indexed by Thomson Reuters. Articles are assigned to a category based on the journals in which they were published and the Thomson Reuters journal-to-category field-definition scheme.

Both articles tabulated and citation counts to those articles are for the period indicated. Here our ranking in agricultural sciences is by citations per paper — among nations that collected 10,000 or more citations during the period — to reveal weighted impact. For articles with multiple authors from different nations, each nation receives full, not fractional, citation credit. Essential Science Indicators lists nations ranked in the top 50 per cent for a field over a given period, based on total citations. In agricultural sciences, 98 nations are listed, meaning 196 were surveyed. Thirty nations collected at least 10,000 citations in this field during the period. The top 20 are listed above, and northern European nations dominate the upper tier. For more information on Thomson Reuters Essential Science Indicators, see

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