Yield and utilization of hardwood fiber grown on short rotations. [Platanus occidentalis, Liquidambar styraciflua, Liriodendron tulipifera]
Journal Article
·
· Appl. Polym. Symp.; (United States)
OSTI ID:7087476
Plantations of broad-leaved tree species harvested in cycles of less than 10 years can help meet man's increasing cellulose and energy needs. A system of growing hardwoods like an agricultural row crop, harvested with equipment equivalent to corn silage cutters and using the ensuing sprout growth as the next crop, was conceived by foresters in Georgia in 1965. Research has focused on the tree species, sites, and cultural practices suited for this concept as well as the biomass yields and the utility of the fiber that was produced. About 70 hectares of American sycamore (Platanus occidentalis L.), sweetgum (Liquidambar styraciflua L.), and yellow poplar (Liriodendron tulipifera L.) test plantings have been established in the Piedmont and Coastal Plain regions of Georgia. These species, when given proper care, can be grown successfully on many sites previously deemed unsuitable for hardwood growth. Stumps will resprout throughout the year, ensuring a continuous flow of raw material to the user. The biomass yields from hardwood fields vary with species, site, cultural practices, and rotation age. Fresh weight yields of unfoliated sycamore sprouts grown on an upland site varied from 14.3 tons/ha/yr when harvested annually to 21.8 tons/ha/yr with harvest at age four. When sprouts were harvested every two years, 46 kg/ha/2 yrs of nitrogen, 35 kg calcium, 22 kg potassium, and 6 kg phosphorus were removed in the harvested material. Juvenile American sycamore stump sprouts have been successfully converted into corrugating medium, particleboard, fiberboard, hardboard, and newsprint. It can be cooked by the Kraft and NSSC processes. One-, two-, and four-year-old sycamore sprouts presented no unusual problems in the Kraft process, and yields ranged from 45 to 57 percent with an average yield of 52 percent. Cooking times were relatively short.
- Research Organization:
- Univ. of Georgia, Athens
- OSTI ID:
- 7087476
- Journal Information:
- Appl. Polym. Symp.; (United States), Journal Name: Appl. Polym. Symp.; (United States) Vol. 28; ISSN APPSB
- Country of Publication:
- United States
- Language:
- English
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Short-Rotation Woody-Crops Program. Annual progress report for 1981
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· Journal of Environmental Quality; (United States)
·
OSTI ID:5263786
Osmotic adjustment in five tree species under elevated CO sub 2 and water stress. [Platanus occidentalis L. ; Liquidambar styraciflua L. ; Quercus rubra L. ; Acer saccharum Marsh; Liriodendron tulipifera L]
Conference
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Wed May 01 00:00:00 EDT 1991
· Plant Physiology, Supplement; (United States)
·
OSTI ID:5559252
Short-Rotation Woody-Crops Program. Annual progress report for 1981
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Thu Jul 01 00:00:00 EDT 1982
·
OSTI ID:6610201