Title page for ETD etd-01162007-115703


Type of Document Master's Thesis
Author McCarty, Shanna Marie
Author's Email Address smccar4@lsu.edu
URN etd-01162007-115703
Title Evaluation of Harvesting Disturbance and Establishment Practices on Early Height Growth of Loblolly Pine (Pinus Taeda L.)
Degree Master of Science (M.S.)
Department Renewable Natural Resources
Advisory Committee
Advisor Name Title
Thomas J. Dean Committee Chair
Quang V. Cao Committee Co-Chair
James P. Geaghan Committee Member
Keywords
  • broadcast burning
  • herbaceous weed control
  • bedding
  • fertilization
  • site productivity
  • sustainability
  • university industry cooperative research
Date of Defense 2006-11-29
Availability unrestricted
Abstract
Land for forest plantations is declining while demand for forest products is increasing, creating concern over sustainable forest management. Maintenance of site productivity is fundamental to forest sustainability, and an assessment of cumulative height growth is a useful index of productivity. Loblolly pine height data were used from four research plantations installed by the project Cooperative Research in Sustainable Silviculture and Soil Productivity from Texas to Georgia. The sites vary in soil characteristics, management history, nutrient status at time of planting, and age (from 4 to 9 years). Each site is a randomized complete block design with a factorial treatment arrangement of harvesting practices (minimum and maximum disturbance) and different establishment practices (e.g., bedding, fertilization, herbaceous weed control, herbaceous weed control plus fertilizer, and burning). An integrated statistical analysis using the change in height with age was used for the evaluation of longer-term treatment effects. Harvesting practices had a significant treatment effect on the change in height with age (p < 0.03) at one site, but did not significantly affect early height growth at the other three sites (p > 0.37). On the other hand, establishment practices had a significant effect on the change in height with age (p < 0.01), independent of accompanying harvesting practice.
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