Energy value of paraquat-treated and resin-soaked lobolly pine
With a basal injector, loblolly pines were treated with 5% paraquat cation (weight/weight basis) and harvested after 18 months. The resin acid, turpentine, moisture content (MC) and energy value were measured in three bolts of the stem. In bolt 1, the first 152 cm above the injection site, the increase in resin acids was 392% and in turpentine, 564%. Within the whole stem (the first two 152 cm bolts and the third bolt to a 7.6 cm inside-bark diameter) resin acids and turpentine increased 203 and 296% respectively. Moisture content was reduced 9%, 8%, and 8% in bolts 1, 2 and 3, respectively. Turpentine from treated and untreated trees had an average heating value of 19,369 cal/g. When weighted for volume, net energy content was 7.8% greater for treated than control trees because of the increase in resin, including turpentine and the lowered MC.
- Research Organization:
- USDA Forest Service, Gainesville, FL
- OSTI ID:
- 5872503
- Journal Information:
- Wood Fiber; (United States), Vol. 16:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PINES
CULTIVATION TECHNIQUES
NET ENERGY
BIOMASS PLANTATIONS
CALORIFIC VALUE
COMPARATIVE EVALUATIONS
HARVESTING
MOISTURE
OPTIMIZATION
RESINS
TURPENTINE
COMBUSTION PROPERTIES
CONIFERS
ENERGY
ENERGY ANALYSIS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SOLVENTS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLANTS
POLYMERS
SOLVENTS
TERPENES
TREES
090122* - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)
140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)