Relationships of Nitrous Oxide Emissions to Fertilizer Nitrogen Recovery Efficiencies in Rain-fed Corn Systems: Research Foundation Building


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

Year of initiation:2015
Year of completion:2017

Interpretive Summary


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.


Relationships between N recovery efficiency (NRE) and nitrous oxide (N2O) emissions in traditional or high-yield corn production systems in the US Corn Belt are poorly understood.

Updates & Reports


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 Annual Report


Project Description

Project Leader

Tony Vyn, Purdue University

Project Cooperators


IPNI Staff

Tai McClellan Maaz


Americas \ Northern America \ USA \ Indiana


4r place, 4r rate, 4r research fund, 4r source, 4r time


Nitrogen (N)