Rain “pulses” after drought drive nitrogen gas spikes more than soil type
Mediterranean dryland crops face cycles of drought and then sudden rain. In a year-long field experiment, researchers found that the biggest bursts of nitrogen pollution in the form of nitrous oxide and nitric oxide followed rewetting, especially when plants had been stressed by drought. Soil texture changed how much inorganic nitrogen built up, but it did not lead to proportionally larger gas spikes.
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