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Abstract
Intensively cultured plantations of Populus 'Tristis # 1' produce more than 10 mt/ha/year of woody biomass at most spacings as long as they are harvested when mean annual biomass increment (MABI) culminates. In addition, fully stocked plantations produce up to 4.4 mt/ha of leaf litter. Plantations of other poplar clones produce about 30% more woody biomass, but leaf litter production is about the same as in P. 'Tristis # 1'. Because projected biomass productions of P. 'Tristis # 1' were 42 to 182% higher than the actual productions, caution must be exercised when using projected production values. The discrepancy increased with age. P. 'Tristis # 1', although less productive than several other poplar clones in our tests, showed no major deficiencies in 12 years of experimentation. Various P. x euramericana clones have suffered sun scalding in northern Wisconsin, and other clones, including the highly productive NE-299 (NC-5331), have suffered wind damage. P. 'Tristis # 1' should be officially recommended for planting in the Lake States.
Parent Publication
Citation
Zavitkovski , J. 1983. Projected and actual biomass production of 2- to 10- year-old intensively cultured Populus ''Tristis # 1''. In: Hansen, Edward A., ed. Intensive plantation culture: 12 years research. Gen. Tech. Rep. NC-91. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station: 72-76.
