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Establishment of poplars in soils amended with fibercake residuals from paper and containerboard production

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Abstract

Hybrid poplars (Populus sp.) are increasingly implemented in agroforestry systems across the U.S., mainly for their biomass production, carbon allocation, and ecosystem services. While agroforestry systems are usually established on marginal land, soil amendments, such as paper mill fibercake residuals, can provide necessary nutrients such as nitrogen (N) to increase poplar yield. To assess the effects of such amendments on poplar early growth and establishment, three clones (Populus deltoides Bartr. ex Marsh × P. maximowiczii A. Henry ‘DM114’; P. deltoides × P. nigra L. ‘DN170’; P. nigra × P. maximowczii ‘NM2’) were grown in a greenhouse for 35 days in soils amended with fibercake residuals from two northern Wisconsin sources (Expera Specialty Solutions, EXP, Rhinelander, WI; Packaging Corporation of America, PCA, Tomahawk, WI). Trees were grown in eleven different soil treatments (one potting mix control, one nursery soil treatment, and nine nursery soil-fibercake blends), with soils mixed according to tillable depth and N application rates. Expera treatments produced 4–30% greater values for growth parameters (excluding root number) and 2% greater values for biomass parameters (excluding root dry mass and root–shoot ratio) than other treatments containing fibercake (i.e., PCA and combined EXP + PCA treatments). Clone ‘NM2’ produced the greatest values for all parameters tested, while ‘DM114’ and ‘DN170’ values were typically intermediate and low, respectively. ‘NM2’ grown in Expera soils produced the highest values for all parameters, suggesting that ‘NM2’ has potential for greater early growth and biomass production on agroforestry sites amended with Expera fibercake.

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Acknowledgements

The findings and conclusions in this publication are those of the authors and should not be construed to represent any official USDA or U.S. Government determination or policy. E.R. Rogers presented portions of this information at the 2018 Woody Crops International Conference; 22–27 July 2018; Rhinelander, Wisconsin, USA. We are grateful to Expera Specialty Solutions (Rhinelander, WI) and Packaging Corporation of America (Tomahawk, WI) for providing fibercake material and information about its production and use. We thank E.O. Bauer, B.A. Birr, B.S. DeBauche, S. Eddy, and R. Lange for technical support, as well as B. Sexton and anonymous manuscript reviewers who critiqued earlier versions of this paper.

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This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Correspondence to Ronald S. Zalesny Jr..

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Rogers, E.R., Zalesny, R.S., Benzel, T. et al. Establishment of poplars in soils amended with fibercake residuals from paper and containerboard production. Agroforest Syst 95, 1719–1733 (2021). https://doi.org/10.1007/s10457-021-00680-0

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  • DOI: https://doi.org/10.1007/s10457-021-00680-0

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