606-6 Reducing Atmospheric Emissions of 1,3-dichloropropene (1,3-D) from Large Fields.

Monday, 6 October 2008: 3:30 PM
George R. Brown Convention Center, 361AB
Scott Yates, USDA-ARS, Riverside, CA, James Knuteson, Flux Experts, LLC, Carmel, IN, Frederick Ernst, Department of Environmental Sciences, University of California, Riverside, CA, Wei Zheng, University of California, Riverside, CA and Qiquan Wang, Department of Chemistry, Delaware State University, Dover, DE
Field experiments were conducted to measure subsurface movement and volatilization of the 1,3-dichloropropene (1,3-D) after shank injection to an agricultural soil. Aerodynamic, integrated horizontal flux and theoretical profile shape methods were used to obtain fumigant flux density and cumulative emission values for two emission-reduction methods: (a) repeated surface irrigation and (b) surface-soil amendment with organic matter.  The volatilization rates were measured continuously for 16 days and total emissions were found to be approximately 30-50% less than observed in other studies. Significant reductions in volatilization of 1,3-D are possible when repeated surface irrigations or organic amendments are applied to a field.