Off-Target Movement of Endosulfan from Artichoke Fields in Monterey County

摘要

The California Department of Pesticide Regulation (formerly the Department ofFood and Agriculture) Environmental Hazards Assessment Program, monitored three artichoke fields in the Moss Landing drainage area of Monterey County to determine whether endosulfan moves off-target via spray drift and/or rain runoff. The information will be used to develop mitigation measures to reduce off site movement of endosulfan. Since 1979, endosulfan residues have consistently been detected in bivalve aquatic organisms in Elkhorn Slough, a state ecological reserve in Monterey County. In a previous study, results of soil and sediment sampling for endosulfan residues indicated that areas in the Moss Landing drainage area associated with high endosulfan use are a potential source of the residues found in Elkhorn Slough. However, there is little information on how endosulfan moves off site in these areas, whether it be via drift during application or through runoff water.