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[0] Hybrid poplar (example of a fast growing hardwood grown as a row crop for bioenergy or multiple purposes) [1] 8,183-8,491 [2] 3-7 dry tons/acre/year; harvested on 5-15 year cycles [3] High yield potential Select varieties easily replicated by cloning Easy to automate planting and harvest as a row crop Can be stored on stump until needed Relatively low-maintenance crop Improvements for bioenergy will also likely benefit the pulp and paper industry [5] Very high future yield potential with genetic selection Innovative harvest equipment is under development Economic yields obtained on marginal to good cropland [4] 
No immediate return on investment Susceptibility of some hybrid poplar varieties to insects and diseases may require occasional chemical applications Agriculture-type site preparation needed for successful establishment Regrowth after harvest is possible but replanting with superior clones is recommend
Biomass Feedstocks for Biopower in the United States
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