Potash Corp. of Saskatchewan Inc. has cut its guidance for third-quarter earnings to $0.41 per share, down from the previous $$0.45-$0.60 per share. The change primarily reflects lower than forecasted potash sales volumes late in the quarter as buyers continued to defer significant purchases amidst near-term market uncertainty. Additional discussion around third-quarter results, as well as full-year guidance will be addressed in the third-quarter news release and conference call Oct. 24.