Relationships of Nitrous Oxide Emissions to Fertilizer Nitrogen Recovery Efficiencies in Rain-fed Corn Systems: Research Foundation Building
IPNI-2015-USA-4RN28
Justification: Nitrous oxide (N2O) emissions from corn production systems are a large societal concern because so much of the N fertilizer applied to crop production in the United States is applied to corn, and because agriculture alone accounts for the majority of N2O emissions from all sources. The IPCC (2006) has estimated that an average of approximately 1. Read more
Interpretive Summary
Little is known about relationships between nitrous oxide loss and crop nitrogen (N) use efficiency metrics despite years of past research. It is commonly assumed that higher fertilizer N recovery will lead to lower nitrous oxide emissions. However, few studies have assessed the hypothesis that greater plant uptake of N or higher recovery efficiency will actually reduce nitrous oxide emissions during crop production.
Little is known about relationships between nitrous oxide (N2O) loss and crop nitrogen use efficiency (NUE) metrics, despite years of past research. It is commonly assumed that higher nitrogen recovery efficiency (NRE) by corn, following nitrogen (N) fertilizer application, will lead to lower N2O emissions but there has been little direct evidence.
Updates & Reports
| 2018 | 2018 Final Report |
| 2017 | Omonode et al. published their research findings, "Achieving Lower Nitrogen Balance and Higher Nitrogen Recovery Efficiency Reduces Nitrous Oxide Emissions in North America's Maize Cropping Systems," in Frontiers in Plant Science in 2017. |
| 2015 | 2015 Annual Report |
| 2015 | Project Description |