Plymouth, Minn.-The Mosaic Co. said last week that it does not respond to rumors when asked about reports in The Wall Street Journal and other major media that it is in negotiations to acquire Mexico’s Grupo Fertinal S.A. The paper said the information came from sources familiar with the matter and that the deal, which was still not a sure thing, was valued at $1 billion. Mosaic has been interested in procuring additional phosphate rock supplies, having recently bought a stake in Peru’s Bayovar rock project. Fertinal would give it further access to rock (GM June 18, 2007; Sept. 3, 2007).