Industry sources reported a “significant amount” of phosphate activity following The Mosaic Co.’s production curtailment announcement. Postings for September/October NOLA barges firmed to $295/st FOB for DAP and GMAP, with unconfirmed reports of actual prompt trades occurring on Sept. 10 in the $285-$295/st FOB NOLA range. Producer postings for November/December firmed to $300/st FOB NOLA.