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    Author(s): Daniel P.L. de Souza; Tom Gallagher; Dana Mitchell; Tim McDonald; Mathew Smidt
    Date: 2016
    Source: International Journal of Forest Engineering
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (1.0 MB)

    Description

    There is increasing interest in plantations with the objective of producing biomass for energy and fuel. These types of plantations are called Short Rotation Woody Crops (SRWC). Popular SRWC species are Eucalypt (Eucalyptus spp.), Cottonwood (Populus deltoides) and Willow (Salix spp.). These species have in common strong growth rates, the ability to coppice, and rotations of 2–10 years. SRWC have generated interest for many forest products’ companies (seeking for diversification or energy self-sufficiency) and private landowners, and although they might help with the supply for the expected growth on the bioenergy and biofuels market, there are still several concerns about how and when to harvest SRWC to maximize their ability to coppice. SRWC have elevated establishment and maintenance costs if compared to other type of plantations, but due to the coppicing ability, the same plantation may be harvested up to 5 times without the need of establishing a new one. Study plots were installed at six locations in Florida, Mississippi and Arkansas, and were cut with a chainsaw and a shear head during summer and winter, to determine the effects of felling method and season on coppice regeneration. Thus, plots were divided into areas of four different treatments: shear-winter, saw-winter, shear-summer, saw-summer. Harvesting eucalypt and cottonwood trees during winter resulted in better survival rates than harvesting during summer; however, there was no effect of felling method on coppice regeneration. Finally, no statistically significant difference was found on coppice regeneration of black willow when harvested during winter or summer with a chainsaw or a shear head.

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    Citation

    de Souza, Daniel P.L.; Gallagher, Tom; Mitchell, Dana; McDonald, Tim; Smidt, Mathew. 2016. Determining the effects of felling method and season of year on the regeneration of short rotation coppice. International Journal of Forest Engineering, Vol. 27(1): 13 pages.: 53-65.   http://dx.doi.org/10.1080/14942119.2015.1135616

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    Keywords

    short rotation woody crops, woody biomass harvest, eucalypt, cottonwood, willow, bioenergy

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https://www.fs.usda.gov/treesearch/pubs/52646