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Abstract
Container type, provenance, and spacing affect survival, height and d.b.h, growth, and biomass production of intensively cultured jack pine. The Lower Michigan provenance and Tubepak grown plants performed better than the local (Wisconsin) provenance and plants raised in Jiffy 7 pellets. At age 5, biomass of Tubepak plantings was more than 100% higher than that of Jiffy 7 plantings. Plantings of the Michigan provenance had 73% more biomass than those of the local source. The aboveground dry weight yield of the 1.0 x 0.3 m (3.3 x 1 ft) planting at age 5 (60.8 mt/ha (27 tons/acre)), approached yields expected or predicted for hybrid poplar plantations in the Lake States. And jack pine has several advantages over hybrid poplar as a source of biomass for energy: it can be harvested during any season of the year (most hybrid poplars can only be harvested during the dormant season), it can be harvested with stumps and roots (hybrid poplar stumps must be left so new coppice stand can develop), and heat of combustion of jack pine biomass is about 8% higher than that of hybrid poplar biomass.
Parent Publication
Citation
Zavitkovski, J.; Phipps, Howard M. 1983. Survival and growth of two intensively cultured jack pine provenances raised in Tubepak and Jiffy 7 containers. 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: 12-16.
