Abstract
Estimation of the energy required to produce stem cuttings of eastern cottonwood ( Populus deltoides Bartr.) is made. These costs ranged from 0·592 MJ to 0·803 MJ per cutting. Ways to reduce this energy cost are discussed and comparisons with the energy necessary for seedlings and seeds are made. The energy required for production of seeds is estimated to be 0·18% and 0·79% of the energy required to produce stem cuttings and 1-0 seedlings, respectively. Finally, use of direct seeding as a high density wood bioenergy establishment mode is discussed.
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