State pesticide regulators expect to restrict use of smog-producing pesticides, commonly used on grapes, almonds, walnuts, alfalfa and other leading crops, from May through October next year in the San Joaquin Valley.Formulations of abamectin, chlorpyrifos, gibberellins and oxyfluorfen that produce high levels of volatile organic compounds, or VOCs, are on the state Department of Pesticide Regulat