Nitrogen Losses: A Meta-analysis of 4R Nutrient Management in U.S. Corn-Based Systems


Project Description Read more

Year of initiation:2014
Year of completion:?

Interpretive Summary


The specific aim of this data analysis project was to determine the impact of 4R N management on nitrous oxide (N2O) and nitrate (NO3) environmental losses relative to corn yield. Beginning in May 2014, published data were collected and summarized on 4R fertilizer N management (right rate, source, timing, and placement) in North American corn-based cropping systems.

Updates & Reports


Project Description

Project Leader

Alison Eagle, Duke University
Lydia Olander, Duke University

Project Cooperators

Emily Snow Bernhardt, Duke University
James Heffernan, Duke University

IPNI Staff

C. S. Snyder


Americas \ Northern America \ USA \ North Carolina


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

maize, tea

Nitrogen (N)