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. 2019 Aug 20;15:97. doi: 10.1186/s13007-019-0478-9

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Relationships between two dates of iron deficiency chlorosis (IDC) severity (a) and two separate raters scoring plots (b). IDC severity was measured on a total of 3386 plots on both July 12 and August 01. The correlation of ratings between date 1 and date 2 was found to be 0.80. A subset of 252 plots were measured by two independent raters on date 1. The correlation of ratings between raters was found to be 0.93