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Title: The practice and economics of hybrid poplar biomass production for biofuels and bioproducts in the Pacific Northwest

Journal Article · · BioEnergy Research
 [1];  [1];  [2];  [3];  [4];  [1];  [1];  [5];  [6];  [1];  [1];  [3];  [7]
  1. GreenWood Resources, Portland, OR (United States)
  2. Univ. of Idaho, Moscow, ID (United States)
  3. State Univ. of New York, Syracuse, NY (United States)
  4. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  5. Mississippi State Univ., Starkville, MS (United States)
  6. Nichino America, Inc., Hermiston, OR (United States)
  7. GreenWood Resources, Bogota (Columbia)

Hybrid poplar demonstration-scale farms were managed in Oregon, Washington, Idaho, and California to establish management practices, yields, harvesting methods, and the economics of biomass production. Yield during the 2-year establishment cycle averaged 3.5 dry Mg ha–1 year–1 increasing to 11.6 Mg ha–1 year–1 in the ensuing 3-year coppice cycle. Populus deltoides (Bartram ex Marsh.) × P. maximowiczii (Henry) varieties preformed best in Oregon during the coppice cycle with the best variety producing 18.1 Mg ha–1 year–1, while P. ×generosa (Henry) varieties maximized yields in Washington at 22.1 Mg ha–1 year–1. P. ×canadensis (Moench) varieties excelled in Idaho and California with upper yields of 13.6 Mg ha–1 year–1 and 12.9 Mg ha–1 year–1, respectively. Stands were cut with a single-pass harvester 2 years after planting and a second time after 3 years of coppice growth; material capacity, limited by poor ground conditions, varied between 21.7 to 31.3 green Mg h–1. Chemical composition averaged 1.87% inorganics, 7.74% extractives, 26.90% lignin, 38.07% glucan, 13.66% xylan, 1.61% galactan, 1.14% arabinan, and 2.76% mannan. Production costs (USD) projected over a 20-year rotation of six coppice cycles were $71.81 Mg–1 in Washington, $89.91 Mg–1 in Oregon, $98.76 Mg–1 in Idaho, and 179.07 Mg–1 in California. Here, land rental, establishment, crop care, harvest, transportation, and land restoration, respectively, accounted for 23%, 5%, 19%, 30%, 17%, and 6% of total feedstock cost. Farms were successfully restored to conditions existing before poplar conversion. In the absence of fertilization, increases in soil pH and decreases in nitrate-nitrogen, zinc, iron, and organic matter were consistently noted but could not be associated with poplar production alone.

Research Organization:
State Univ. of New York, Syracuse, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0006638
OSTI ID:
1729876
Journal Information:
BioEnergy Research, Vol. 14, Issue 2; ISSN 1939-1234
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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