Carbon and nitrogen accumulation within four black walnut alley cropping sites across Missouri and Arkansas, USA

dc.contributor.authorThomas, Andrew L.
dc.contributor.authorKallenbach, Robert
dc.contributor.authorSauer, Thomas J.
dc.contributor.authorBrauer, David K.
dc.contributor.authorBurner, David M.
dc.contributor.authorCoggeshall, Mark V.
dc.contributor.authorDold, Christian
dc.contributor.authorRogers, Wendi
dc.contributor.authorBardhan, Sougata
dc.contributor.authorJose, Shibu
dc.date.accessioned2023-02-02T00:12:26Z
dc.date.available2023-02-02T00:12:26Z
dc.date.issued2020
dc.description© The Author(s) 2020. This article is published with open access at Springerlink.com and is licensed under the Creative Commons Attribution 4.0 International License - https://creativecommons.org/licenses/by/4.0/ . The Version of Scholarly Record of this Article is published in Agroforestry Systems , available online at: https://link.springer.com/article/10.1007/s10457-019-00471-8 . Keywords: Juglans nigra; allometry; root-shoot ratio; log-log models; North America; United States of America.
dc.description.abstractAgroforestry systems that integrate useful long-lived trees have been recognized for their potential in mitigating the accumulation of atmospheric fossil fuel-derived carbon (C). Black walnut (Juglans nigra) is frequently planted and cultivated in North America for its valuable lumber and edible nuts, and is highly amenable to the integration of understory crops or livestock in agroforestry systems. However, little is known about C content in black walnut trees, including the amounts of C assimilated into lignocellulosic tissues within different tree compartments. Therefore, allometric equations for above- and below-ground compartments of 10-year-old black walnut trees across diverse locations were developed. Ten grafted black walnut trees from each of four sites across the midwestern USA were destructively harvested for above- and below-ground biomass, and dry biomass weight (DWw), C (Cw) and nitrogen (N; Nw) stocks were quantified. Soils surrounding the harvested trees were sampled and analyzed for soil organic C (SOC) and total N (TN). Total DWw ranged from 27 to 54 kg tree−1, with woody tissues containing an average of 467 g kg−1 C and 3.5 g kg−1 N. Woody tissues differed in Cw and Nw across location, and above-ground sections contained more C and less N compared with most root tissues. The slopes of the allometric equations did not differ significantly among locations, while intercepts did, indicating that trees only differed in initial size across locations. SOC and TN did not vary in distance from the trees, likely because the trees were not yet old enough to have impacted the surrounding soils. Our results establish a foundation for quantifying C and N stocks in newly established black walnut alley cropping systems across diverse environments.
dc.description.sponsorshipThis research was supported in part by the United States Department of Agriculture (USDA)—Agricultural Research Service (ARS), Dale Bumpers Small Farms Research Center, Booneville, Arkansas through Project 6227-21660-003-00D, and through a specific cooperative agreement (58-6227-1-004) between USDA-ARS and University of Missouri Center for Agroforestry. It was also supported by an appointment to the Agricultural Research Service (ARS) Research Participation Program administered by the Oak Ridge Institute for Science and Education (ORISE) through an interagency agreement between the U.S. Department of Energy (DOE) and USDA. ORISE is managed by Oak Ridge Associated Universities (ORAU) under DOE contract number DE-AC05-06OR23100. All opinions expressed in this paper are the authors’ and do not necessarily reflect the policies and views of University of Missouri, USDA, ARS, DOE, or ORAU/ORISE. USDA is an equal opportunity provider and employer. Mention of trade names or commercial products in this article is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the USDA.
dc.identifier.citationThomas, A.L., Kallenbach, R., Sauer, T.J., Brauer, D. K., Burner, D. M., Coggeshall, M. V., Dold, C., Rogers, W., Bardhan, S., & Jose, S. (2020). Carbon and nitrogen accumulation within four black walnut alley cropping sites across Missouri and Arkansas, USA. Agroforestry Systems, 94, 1625–1638. https://doi.org/10.1007/s10457-019-00471-8
dc.identifier.otherhttps://doi.org/10.1007/s10457-019-00471-8
dc.identifier.urihttps://hdl.handle.net/20.500.14096/236
dc.language.isoen
dc.publisherSpringer Nature
dc.titleCarbon and nitrogen accumulation within four black walnut alley cropping sites across Missouri and Arkansas, USA
dc.typeArticle

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