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Fig. 1. Preplant and post-harvest soil NO₃–N concentration (0- to 240-cm depth) at Ellinwood for six N treatments (kg N ha^–1) and two irrigation treatments (1.0x and 1.25x). Significant differences in NO₃–N among N treatments for a given depth are indicated with a *N, in NO₃–N among sampling depth with a *Depth, and N treatment by depth interactions with a *Depth x N, as determined by repeated measures analysis at = 0.10.

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