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Figure S1. Daily and cumulative precipitation from 10 April to 7 October 7, 2007. Arrows denote the fertilizer and planting date: KBS on May 22; Mason on May 8; and Fairgrove and Reese on April 22.

Figure S2. Daily and cumulative precipitation from 9 April 9 to 6 October 6 2008. Arrows denote the fertilizer and planting date: KBS on May 16; Stockbridge on May 24; and Fairgrove and Reese on April 22.

Figure S3. Daily N2O flux during the 2007 growing season. Data collection began prior to fertilizer application (0–225 kg N ha-1) and continued until harvest.

Figure S4. Daily N2O flux during the 2008 growing season. Data collection began prior to fertilizer application (0–225 kg N ha-1) and continued until harvest.

Figure S5. Corn grain yield response to N fertilizer for the N responsive site-years. The results from regression analysis are given by the best fit equations selected among quadratic plateau (QP), linear plateau (LP), or quadratic (Q) models (Wallach & Loisel, 1994).

Table S1. Monthly precipitation, planting and harvest date for each site-year.

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GCB_2349_sm_figure-s2.eps3856KSupporting info item
GCB_2349_sm_figure-s3.eps2340KSupporting info item
GCB_2349_sm_figure-s4.eps2030KSupporting info item
GCB_2349_sm_figure-s5.eps1597KSupporting info item
GCB_2349_sm_suppltable.docx530KSupporting info item

Please note: Wiley Blackwell is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.