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. 2020 Aug 7;10:13381. doi: 10.1038/s41598-020-70224-6

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Cumulative above-ground plant C inputs from cover crops (light gray bars) and main crop (dark gray bars) over the period of 9-years at site A and site B at Ridgetown, Ontario. At each site and for each parameter, bars with different letter and capitalization indicate statistical significance at P < 0.05 per protected LSD test. Error bars represent standard error of the mean.; ns = not significant (P > 0.05).