Phosphorus Site Index

PSI Banner
Index Contents
PSI Update
Supplemental Update #1
Supplemental Update #2
 
Welcome to the Maryland Phosphorus Site Index (PSI) web site. In April 2005, an improved version of nutrient management software entitled Nutrient Management for Maryland Professional Edition (NuManPro) was released. NumanPro contains an improved form of the PSI, and automatic data transfer from the nutrient management element to help reduce data entry. Current users of PSI are encouraged to replace their phosphorus loss assessment software with NuManPro. NuManPro may be obtained by contacting the University of Maryland, Office of Technology Commercialization at 301-403-2711.
The current updates for PSI will remain available but further updates will not be issued for the PSI software.

Supplemental Update #2, December 3, 2003

Reason for update

  1. When entering data on the Field page some data would reset.
  2. Printing error, wrong Total P Loss Rating label.
  3. Corrects Mapunit Symbol and Soil Description.

Supplemental Update #1, December 5, 2002

Reason for update - corrects the Brookside conversion formula.

PSI Update, September 3, 2002

Reason for update - updates county, attribute and exe files.

Instructions for updating the software are as follows:

  1. Click on the PSI Update link in the frame to the left.
  2. A "Save As" dialogue should appear and give the user the opportunity to select the location for saving the PSIUpdate.exe file.
  3. Save the file to a location where it will be easy to locate later (the desktop is a suggestion). If desired, print this page of instructions.
  4. When downloading has completed, and all instructions have been read and understood, close the browser and all other programs that may be running on the computer.
  5. Double click on the PSIUpdate.exe icon to start the update program.
  6. Follow the on-screen instructions.
  7. The update program will make the necessary changes to the PSI software and support files.
  8. When the update program has completed, the PSIUpdate.exe file may be removed from the desktop (if it was saved there). Either delete it or move it to another location on the computer's hard drive.