Submitted to: Proceedings of the X Symposium of Pesticide Chemistry: Environmental Fate
Publication Type: Proceedings
Publication Acceptance Date: June 8, 1996
Publication Date: N/A
Interpretive Summary: This is a Proceedings. No Interpretive Summary is needed
Technical Abstract: Volatilization is recognized as an important route of dissipation for pesticides and other related organic chemicals from agricultural soils. Since pesticides will likely face increased scrutiny in years ahead, there is a great need to understand the mechanisms which control the emission of chemicals into the atmosphere so that pesticide volatilization can be minimized. More information is needed abut the behavior of volatile organics in large heterogeneous fields under typical atmospheric and soil conditions before efficient methods for reducing emissions will result. To provide some of this information, recent field experiments have been conducted to measure the volatilization rate of soil fumigants under typical soil and environmental conditions in the field. During these experiments, the rate of volatilization was measured using several independent methods and comparisons were made to the outcomes based on water, solute and heat transport models. Information is also given on several mechanisms which affect the spatial and temporal behavior of the volatilization and should be studied further to determine if they should be routinely included into volatilization studies.