Analysis of nitrogen cycle and nitrous oxide production in upland soils under different managements

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One of the major results of this study is to present the data on the seasonal variation of nitrous oxide (N_2O)-producing potential in no-tilled upland soils and the contribution of fungi to soil N_2O production. Our results showed that the soil N_2O-producing potential was the highest just before the harvest of summer crop (soy bean), winter-cover cropping enhanced the potential after the cut down of cover crop in spring, and the fungal N_2O-producing activity was comparable to the bacterial activity when the soils were kept at high water content.