TAUYIELD 3.0 for Windows (Recently updated from Version 2.0)

TAUYIELD 3.0 is a computer program which can be used to predict the growth and yield of thinned and unthinned loblolly pine plantations on cutover, site-prepared lands and do financial analyses based on those predictions. *Version 3.0 includes new site preparation and fertilization equations from the previous Version 2.0. It also includes an enhanced financial analysis package and additional merchantability specifications.

Inputs to the model are:
     -site index (base age 25)
     -stand density (trees and/or basal area per acre).

Outputs include (by 1-inch dbh classes):
     -surviving trees per acre
     -basal area
     -volumes (various units can be specified by the user).

TAUYIELD 3.0 is based on numerous equations which predict and project whole stand and stand distribution characteristics. Data for the equations were from both Piedmont and Coastal Plain sites across the natural growing range of loblolly pine. Dbh distributions are obtained from stand-level characteristics. All output is displayed on the monitor. The dbh distribution of the stand can be shown as a 3D bar graph. If a printer is available, the user can easily obtain printed copies of selected results. Output from the stand/stock table can be copied to the Windows clipboard and then pasted to other Windows applications for additional evaluation. Options are available to initialize a thinned or unthinned plantation, to thin a plantation according to one of several thinning algorithms, and to project a stand through time. TAUYIELD 3.0 is available for $195.00. To place an order or obtain additional information, contact pcgreen7@vt.edu.

Download a Demonstration Version (Windows only)

  • Click TAUYIELD to start downloading.(304k)
  • With Internet Explorer select "save this program to disk" , choose a directory or the desktop to save to.
  • Run the file saved in step 2 by double clicking it. The self extraction utility starts.
  • From the menu choose SelfExtract/Extract Files, choose a destination directory (directory must already exist). Click Execute.
  • Run the demo program in the destination directory of step 4.
  • The demonstration version site index is set to 60.

A detailed users manual <TAUYIELD.pdf> can be viewed by selecting the "About TAUYIELD" menu option from the help menu and then clicking the view manual button. For additional information, contact pcgreen7@vt.edu.

Version 3.0 manual
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