Masters Theses
Fifth-year measurements of loblolly pine across Tennessee following various silvicultural treatments
Date of Award
12-2000
Degree Type
Thesis
Degree Name
Master of Science
Major
Forestry
Major Professor
John C. Rennie
Committee Members
David Buckley, Vernon Reich
Abstract
Loblolly pine (Pinus taeda) was planted at nine locations across Tennessee in 1993-94 and 1994-95 using a customized fractional factorial design. Two sites, good and poor, were chosen at each location to compare soil effects on height and survival. At each site three treatments were evaluated: spacing (8X8, 8X10, and 10X10 feet), herbicide (2.0 oz/ac Oust and 4.0 oz/ac Arsenal), fertilization at planting (three, 9 gm fertilizer tablets per tree (22-8-2)). After the fifth growing season, height measurements and survival counts were taken.
The least square estimate of mean overall height and survival at good and poor sites combined after five growing seasons was, 12 feet and 84 percent, respectively. Results after five growing seasons indicate that herbicide increased tree height by 8 percent on the good and poor sites combined. Survival increased 13 percent when herbicide was used at good and poor sites. There were significant differences found between experiment stations at (P<0.05). Mean height estimates for stations after five growing seasons ranged from 9.5 feet at the West Tennessee Experiment Station to 13.5 feet at Ames Plantation. Survival ranged from 59 percent at the Dairy Experiment Station to 99 percent at the Highland Rim Forestry Experiment Station. There were also significant differences (P<0.05) found between mean survival estimates for site by herbicide at good and poor sites combined.
Recommended Citation
Taylor, Lyle E., "Fifth-year measurements of loblolly pine across Tennessee following various silvicultural treatments. " Master's Thesis, University of Tennessee, 2000.
https://trace.tennessee.edu/utk_gradthes/6567