We announce with great pleasure the publication of the 2007 impact factor of 1.000, released on June 18, 2008 by the Journal Citation Reports, ISI Web of Knowledge. Our journal ranks now 25/49 in the category Agronomy. On the behalf of the editorial board and EDP Sciences, I warmly congratulate all authors, peer-reviewers and editors for this success. Please do not hesitate to contact me for suggestions of review articles.

Dr. Eric Lichtfouse, Editor-in-Chief.