Soil fumigation remains an important agronomic practice in the production of many high-value vegetable and fruit crops.  Soil fumigation can lead to excessive atmospheric emissions and increased human and environmental health risk.  Pesticide fate, transport and emissions are affected by many soil and environmental processes, and this information is needed to develop best management practices to mitigate emissions of soil fumigants to reduce harmful side effects. Several large-scale field experiments were conducted to obtain volatilization and cumulative emission rates for two commonly-used soil fumigants, 1,3-dichloropropene (1,3-D) and chloropicrin, after soil injection. These experiments tested a variety of potential management practices intended to mitigate emissions.  In all experiments, a time series of the volatilization rates and cumulative emission losses were obtained. This presentation will compare simulated and measured emissions of 1,3-dichloropropene in an effort to test model performance and to identify model weaknesses. As research improves our ability to predict pesticide emissions, methods can be developed to utilize these chemicals more safely, leading to increased agricultural production while reducing adverse consequences on the environment and public health.

Simulating emissions of 1,3-dichloropropene after soil fumigation under several field-management conditions

254th National Meeting (2017)

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