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. 2016 Jul 12;7:1017. doi: 10.3389/fpls.2016.01017

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Copyright © 2016 Meier and Thorburn.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Mean yield of burnt and trash blanketed crops in the last four crop cycles fertilized with two N fertilizer ‘treatments.’ The codes for these N fertilizer rates are shown in the legend as the combination of N fertilizer rates applied to the plant and ratoon crops: the 60/80 rate (i.e., 60 kg N ha^–1 applied to the plant crop and 80 kg N ha^–1 applied to the ratoon crop) and the 90/120 rate. For each location-soil combination, the value for 95% of maximum average yield is shown with a horizontal line. Error bars represent the standard deviation of the mean.