The Impact Factor (IF) of the Plant & Soil Journal has considerably increased from 2.638 in 2012 to 3.235 in 2013. For those researchers who are familiar with IF, it is a great deal and achievement that implies different issues.
1) In recent years several journals have gained an "Unreal" IF through manipulation such as publishing a large number of Review Papers or asking the authors to cite the published papers of those journals even where not that relevant. I myself have experienced such suggestion from an Editor of a journal but I did not do it because I believe that it is not ethical since it would mislead the prospective authors about the real value of that journal.
2) IF greater than 3, mainly in agriculture and soil science disciplines, means that the journal has a great impact on developing new science. Therefore, they attract researchers who are seeking for breakthrough studies that have something valuable to say. I have been reading the paper of Plant and Soil and strongly believe that it deserves such great and REAL Impact Factor as the papers are very new and breakthrough as far as I follow those in my field of research. So, I congratulate the Editorial board of this journal and hope for continuous improvement of this prestigious journal.
3) In recent years, some journals that have experienced increased IF claim that they have a higher rate of rejection of manuscripts. Although it is a good practice to just publish those manuscripts that are of high value, the Editors should be more careful to not reject some of those that are worth publishing. Recently a number of journal's editor make a first and quick screen of the manuscript and reject the manuscript without sending them for peer-review processes. It is fine that they want to keep the IF high but it is another kind of manipulation to increase the IF in the expense of rejecting author's paper that might get through publication after getting positive responses from the reviewers.
4) Another journal biometric index that is getting more popular is Source Normalized Impact per Paper (SNIP) that measures contextual citation impact by weighting citations based on the total number of citations in a subject field. Although it is not reported for Plant and Soil, it seems that SNIP would be high for it since this journal is a specific-oriented journal and has its own readers. So, overall, Plant and Soil would be keeping its role as a reliable forum for publishing papers of high value especially in plant root studies.
Article The impact factor of Plant and Soil reached a record of 3.235