2009 Plant & insect science journal impact factors released

Thomson Reuters has just published the 2009 Journal Citation Reports (JCR), available by online subscription to UW-Madison library users. These metrics, including the "impact factor," can be used to compare journal performance. JCR compares 9,100+ peer-reviewed journals from 2,200 publishers in 78 countries.

New features:

• 1,055+ journals with their first published impact factor
  
• Updated 5-year impact factors and Eigenfactor metrics
  
• "Rank in category" for each journal's subject area, along with a box plot of impact factor distribution for all journals in that category
• Journal "self-citations" and analysis of their effect on impact factor

Top Agronomy journals by impact factor:

1. Advances in Agronomy
2. Theoretical and Applied Genetics
3. Agricultural and Forest Meteorology
4. Plant and Soil
5. European Journal of Agronomy
6. Plant Pathology
7. Field Crops Research
8. Postharvest Biology and Technology
9. Journal of Agronomy and Crop Science
10. Molecular Breeding

Top Entomology journals by impact factor:

1. Annual Review of Entomology
2. Advances in Insect Physiology
3. Insect Biochemistry and Molecular Biology
4. Insect Conservation and Diversity
5. Insect Molecular Biology
6. Systematic Entomology
7. Journal of Insect Physiology
8. Pest Management Science
9. Medical and Veterinary Entomology
10. Journal of Medical Entomology

Top Horticulture journals by impact factor:

1. Theoretical and Applied Genetics
2. Postharvest Biology and Technology
3. Molecular Breeding
4. Tree Genetics and Genomes
5. European Journal of Plant Pathology (print only 1994-96, 2004-05)
6. Australian Journal of Grape and Wine Research
7. Euphytica
8. Scientia Horticulturae
9. American Journal of Enology and Viticulture (print only)
10. Journal of the Japanese Society for Horticultural Science

Top Plant Sciences journals by impact factor:

1. Annual Review of Plant Biology
2. Annual Review of Phytopathology
3. Current Opinion in Plant Biology 
4. Trends in Plant Science 
5. Plant Cell
6. Plant Journal
7. Plant Physiology
8. New Phytologist
9. Plant, Cell & Environment
10. Critical Reviews in Plant Sciences 

Top Soil Science journals by impact factor:

1. Soil Biology and Biochemistry 
2. Soil & Tillage Research 
3. Journal of Soils and Sediments (no subscription)
4. Plant and Soil 
5. Geoderma
6. Pedobiologia 
7. Soil Science Society of America Journal
8. European Journal of Soil Science 
9. Applied Soil Ecology
10. Soil Use and Management 

Top Multidisciplinary Agriculture journals by impact factor:

1. Agriculture, Ecosystems & Environment
2. Journal of Agricultural and Food Chemistry
3. Agricultural Systems
4. Annals of Applied Biology
5. Journal of Agricultural Science
6. Journal of the Science of Food and Agriculture
7. Computers and Electronics in Agriculture
8. Australian Journal of Agricultural Research (ends 2008)
9. Agriculture and Human Values
10. Precision Agriculture 

2008 Journal impact factors released

2008 Journal impact factors released

Thomson Reuters has just published the 2008 Journal Citation Reports, available to UW-Madison library users. These metrics, including the "impact factor," can be used to compare journal performance. JCR includes 8,000+ highly cited, peer-reviewed journals from around the world.

New features:

• 350+ new journals with their first published impact factor
  
• Updated 5-year impact factors and Eigenfactor metrics
  
• "Journal self cites" analyzes the contribution of self-citation to the impact factor (20 journals were dropped from JCR due to high self citation rates)
  
• "Rank in category" for each journal's subject area, along with a box plot of impact factor distribution for all journals in that category

Top 3 in Agronomy by impact factor:

1. Agricultural and Forest Meteorology
2. Theoretical and Applied Genetics
3. Advances in Agronomy

Top 3 in Entomology by impact factor:

1. Annual Review of Entomology
2. Advances in Insect Physiology
3. Insect Molecular Biology

Top 3 in Horticulture by impact factor:

1. Theoretical and Applied Genetics
2. Tree Genetics and Genomes
3. Postharvest Biology and Technology

Top 3 in Plant Sciences by impact factor:

1. Annual Review of Plant Biology
2. Annual Review of Phytopathology
3. Plant Cell

Impact factors: Food science journals

Food science & technology journals
ranked by 2007 impact factor:

1. Critical Reviews in Food Science and Nutrition


2. Trends in Food Science and Technology


3. Molecular Nutrition and Food Research (was Die Nahrung / Food)


4. Food Chemistry


5. Foodborne Pathogens and Disease


6. International Journal of Food Microbiology


7. Journal of Agriculture and Food Chemistry


8. Food Hydrocolloids


9. Journal of Dairy Science


10. Food Research International

"The 2007 impact factor is calculated by taking the number of all current citations to source items published in a journal over the previous two years and dividing by the number of articles published in the journal during the same period--in other words, a ratio between citations and recent citable items published."

[Source: ScienceWatch, 2/1/09]