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Latest Impact Factors from Elsevier's Agriculture, Plant and Soil Sciences Journals

We are pleased to bring you the latest Impact Factors* from Elsevier's Agriculture, Plant and Soil Sciences journals. Highlights include Soil Biology & Chemistry and Soil & Tillage Research, ranked 1st and 2nd in the Soil Science category and Agriculture, Ecosystems and Environment, ranked 1st in the Agriculture, Multidisciplinary category. More highlights...

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Current Opinion In Plant Biology

2008 Impact Factor
WAS
8.688

2009 Impact Factor
NOW
10.333

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Environmental And Experimental Botany

2008 Impact Factor
WAS
2.301

2009 Impact Factor
NOW
3.164

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Agriculture Ecosystems & Environment

2008 Impact Factor
WAS
2.884

2009 Impact Factor
NOW
3.130

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Soil Biology & Biochemistry

2008 Impact Factor
WAS
2.926

2009 Impact Factor
NOW
2.978

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Calculating Impact Factors

WHAT IS AN IMPACT FACTOR?
The journal impact factor is a measure of the frequency with which the average article in a journal has been cited in a particular year. The impact factor helps you evaluate a journal's relative importance, especially when you compare it to others in the same field. The impact factor is calculated by dividing the number of citations in the current year to items published in the two previous years by the total number of items published in the two previous years.

Using Journal X as an example:
Cites in 2010 to items published in:2009
2008
Sum
= 258
= 199
= 457
Number of items published in:2009
2008
Sum
= 116
= 71
= 187
Calculation:Cites to recent items457= 2.444
Number of recent items187

The 2010 Impact Factor for Journal X is 2.444

Journal Performance Measurements

Journal performance measurements offer a systematic, objective means to critically evaluate journals, and several indicators are available. For more information on IFs and other journal performance measurements visit:

http://www.elsevier.com/wps/find/editorshome.editors/biblio