Preparing U.S. Agriculture for Global Climate Change surveys strategies for decreasing agricultural N2O emissions in the section Nitrous Oxide (Emitting Less) (Council for Agricultural Science and Technology 1992). Fertilizer management through nitrogen-management practices is essential: optimizing the crop's natural ability to compete with processes that result in loss of plant available nitrogen from the soil-plant system (denitrification and leaching); and decreasing the rate and duration of these loss processes. Irrigation water management helps move soluble nitrogen deeper into the soil profile where supplies of oxygen are more limited, and therefore there is increased opportunity to reduce nitrous oxide that may form nitrogen. Figure 5.4.3 shows cumulative nitrous oxide and nitrogen flux at the soil surface for two months as a function of irrigation frequency.
Chapter 7 of the U.S. Environmental Protection Agency report Policy Options for Stabilizing Global Climate discusses a broad range of existing and emerging technologies to reduce nitrous oxide from nitrogenous fertilizers (Lashof and Tirpak 1990).