Data for growing season nitrous oxide emissions from a Gray Luvisol as a function of long-term fertilization history and crop rotation

<p>A field study conducted over five growing seasons (2013-2017) assessed the effect of long-term fertilization history and crop rotation on growing season nitrous oxide (N<sub>2</sub>O) and carbon dioxide (CO<sub>2</sub>) emissions, wheat yield, wheat N uptake, N<sub>2</sub>O emission intensity and soil properties on Gray Luvisolic soils. Long-term fertility treatments included check, manure, NPKS, NPK and PKS fertilizers in two contrasting crop rotations: a 2-year of wheat (<i>Triticum aestivum</i> L.)-fallow (WF), and a 5-year wheat (<i>Triticum aestivum</i> L.)-oat (<i>Avena sativa</i>)-barely (<i>Hordeum vulgare</i> L.) - alfalfa (<i>Medicago sativa</i>)/brome (<i>Bromus tectorum</i>) hay (WOBHH). Rotation significantly affected cumulative growing season N<sub>2</sub>O emissions and, within each rotation, long-term fertilizer or manure N additions increased N<sub>2</sub>O emissions over the check. Average, cumulative growing season N<sub>2</sub>O emissions from the 5-year rotation were 1.29 kg N<sub>2</sub>O-N ha<sup>-1</sup>, significantly higher than the 0.58 kg N<sub>2</sub>O-N ha<sup>-1</sup> in the WF rotation, but N<sub>2</sub>O emission intensities were comparable between to the two rotations. Cumulative N<sub>2</sub>O emissions were positively correlated to total soil N (0-15 cm) and wheat N uptake, but N<sub>2</sub>O emission intensities were negatively correlated to total soil N. </p>