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Project Report No. 43, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: 1996, Don Campbell, Steve Croft, Mark Dougharty, Doug Foster, John Hawkins, William Howard, Young Jin Lee, Jason Love, Derek Mckean, Kendall Watts, Kurtis White

Informal Project Reports

In this update, after combining the data from the two subplots comprising each ETPPRP plot, the number of age-height pairs available for this analysis is 1,520 loblolly and 658 slash. the It is anticipated that the equations in this :996 update may productivity of East Texas loblolly and slash pine plantations quantify in a more accurate and reliable manner than the four previous sets 0: equations.

Research Report No. 27, Site Index Equations For Loblolly And Slash Pine Plantations In East Texas, Update: 1993, A. Beth Vaughn, Jaffirin Lapongan, J. David Lenhart

Informal Project Reports

In 1986, equations to estimate site index in loblolly and slash pine plantations in East Texas were published. These equations were developed using data collected from East Texas Pine Plantation Research Project (ETPPRP) permanent plots distributed throughout East Texas. The site index prediction equations were designed to estimate tree height 25 years from planting, ie., index age = 25 years.

In the 1986 study, only data recorded during the first measurement cycle of the ETPPRP (1982- 1984) were available for analysis. Pairs of observed plantation age and a'verage !otal height of the ten tallest trees values were accessible from 150 …