Two-Part Webinar Series on Greenhouse Gas Emissions and Soil Quality in Long-term Integrated and Transitional Reduced Tillage Organic Systems

Webinar 1: Why the Concern about Nitrous Oxide Emissions?

February 25, 2014

Presenters: Ann-Marie Fortuna, North Dakota State University; Craig Cogger and Doug Collins, Washington State University-Puyallup. Watch on YouTube at

Topics for this webinar include:

  • Source and properties of N2O as a greenhouse gas, its relative contribution to global
  • warming, and the role of agriculture in N2O emissions
  • Review of the nitrogen cycle and the production of N2O
  • The relationship between organic practices and N2O production
  • How we measure N2O emissions

Intended audience is extension faculty and farmers who want a big picture perspective on why we’re interested in nitrous oxide emissions.

Slides from this webinar as a pdf handout

Webinar 2: Management to Reduce N2O Emissions in Organic Vegetable Production Systems

Recorded February 27, 2014
Presenters: Ann-Marie Fortuna, Douglas Collins, Craig Cogger. Watch on YouTube at

This is the focus of our current research. How do different organic vegetable production systems affect N2O emissions, and how do other outcomes of those systems affect theirpotential for adoption?

  • Systems include full tillage with high-carbon amendment (compost), full tillage with low carbon amendment (broiler litter), pasture-vegetable rotation, and reduced tillage cover crop mulch.
  • Measurements include N2O and CO2 emissions, soil N, microbial ecology focused on denitrification organisms, crop yield, and soil quality. Measurements are focused on key times during the season, including amendment application and tillage, irrigation, and freeze-thaw.

Intended audience is other researchers, and interested extension faculty and farmers.

Slides from this webinar as a pdf handout


Published January 23, 2014

This is an eOrganic article and was reviewed for compliance with National Organic Program regulations by members of the eOrganic community. Always check with your organic certification agency before adopting new practices or using new materials. For more information, refer to eOrganic's articles on organic certification.