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. 2020 Sep 2;11:4408. doi: 10.1038/s41467-020-18317-8

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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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Fig. 1 — Free State and Western Cape provinces account for 73 and 99% of total and dryland wheat production, respectively, in South Africa⁴⁴. Note, one wheat trial site and weather station is in the Eastern Cape Province, and the trial sites of Hopefield and Porterville appear as one location due to proximity. Created by A.M. Shew using QGIS 3.6.0-Noosa, under GNU General Public License v2, 1991 (gnu.org/licenses/old-licenses/gpl-2.0.en.html).