Mosaic Announces First Quarter 2006 Earnings Conference Call to be held Monday, October 3, 2005 at 11 a.m. EDT

September 21, 2005

PLYMOUTH, Minn., Sept. 21 /PRNewswire-FirstCall/ -- The Mosaic Company (NYSE: MOS) will conduct a conference call on Monday, October 3, 2005, to discuss 2006 1st quarter earnings results. The call will begin at 11:00 a.m. Eastern Daylight Time (10 a.m. Central Daylight Time) and will last no longer than 60 minutes.

     Conference Call Phone Number:  800-901-5241
     International Phone Call-In Number:  617-786-2963
     Participant Passcode: 57227112

Additionally, a Webcast of the conference call, both live and as a replay, can be accessed by visiting Mosaic's web site at http://www.mosaicco.com/investors . This Webcast will be available up to one year from the time of the earnings call.

A replay of the audio call will be available through 6:00 p.m. Eastern Daylight Time on Monday, October 31. Please call 888-286-8010 to access the replay and use passcode 12083832.

The earnings press release and tables will be issued before the conference call and also will be available at Mosaic's website. Please note that no individual phone calls will be taken to discuss the earnings announcement before the conference call.

About the Mosaic Company

The Mosaic Company is one of the world's leading producers and marketers of concentrated phosphate and potash crop nutrients. For the global agriculture industry, Mosaic is a single source of phosphates, potash, nitrogen fertilizers and feed ingredients. More information on the company is available at http://www.mosaicco.com .

SOURCE  The Mosaic Company
    -0-                             09/21/2005
    /CONTACT: Media: Linda Thrasher, +1-763-577-2864, Investors: Douglas
Hoadley, +1-763-577-2867 both of The Mosaic Company/
    /Web site: http://www.mosaicco.com/investorshttp://www.mosaicco.com /
    (MOS)

CO:  The Mosaic Company
ST:  Minnesota
IN:  AGR CHM
SU:  CCA MAV

TG-AJ
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