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. 2020 Jun 11;3:300. doi: 10.1038/s42003-020-1022-1

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© The Author(s) 2020, corrected publication 2022

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Fig. 1 — a Cereal rye grown as a cover in corn residue in southern Minnesota (photograph by Michael Kantar), b Arizona bean field with cover crops of buckwheat and cowpeas intercropped between bean rows (Photo by Todd Horst), c Hairy vetch grown as a cover crop in southern Minnesota (photograph by David Hanson).