07 May 2015Does Meta-Analysis Adequately Assess the Interaction of the 4Rs of Crop Nutrition with Climate and Other Factors Impacting Nitrous Oxide Emissions?Presented at the Joint Assembly of AGU-GAC-MAC-CGU in Montreal, Quebec, Canada on 6 May 2015.
23 Oct 2012Managing Crop Nitrogen to Mitigate and Adapt to Climate ChangePresented at the Soil Science Society of America Special Session on Nitrogen-Climate Interactions and Soil Processes in Cincinnati, Ohio, USA on 23 October 2012.
19 Jul 2012Managing Crop Nutrition in a Changing ClimatePresented at the annual meeting of the Canadian Society of Agronomy in Saskatoon, SK, Canada on 19 July 2012.
20 May 2009Fertilizer BiogeochemistryPresented at the 17th Penn State Plant Biology Symposium, May 19-21, 2009 at University Park, PA, USA.