title: Analysis of diazinon agricultural use in regions of frequent surface water detections in California, USA.
abstract: For five agricultural regions in California, USA, detection frequency of diazinon in surface water and several aspects of its use were determined from recent data (2005-2010): application method, product formulation and primary crops. Diazinon detection frequencies ranged from 10% to 91%. Application method and product formulations used were similar in all regions. The primary crops treated varied from lettuce (77%) in the regions with highest detections frequencies to tree crops (53%) in those with the lowest. The results suggest that the variation in diazinon detection frequencies likely was not due to the application method or formulation type.
authors.affiliation: Environmental Monitoring Branch, California Department of Pesticide Regulation, 1001 I Street, Sacramento, CA 95812, USA. xzhang@cdpr.ca.gov
authors.forename: Xuyang
authors.initials: X
authors.lastname: Zhang
authors.forename: Keith
authors.initials: K
authors.lastname: Starner
authors.forename: Kean S
authors.initials: KS
authors.lastname: Goh
authors.forename: Sheryl
authors.initials: S
authors.lastname: Gill
mesh_terms: D000383:Agriculture / Q000379:methods / Q000706:statistics & numerical data*; D002140:California; D003976:Diazinon / Q000032:analysis*; D004784:Environmental Monitoring; D005618:Fresh Water / Q000737:chemistry*; D007306:Insecticides / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data*
chemical_list: D007306:Insecticides; D003976:Diazinon