"On Wednesday, May 8, 2019, the State of California announced it would ban the use of chlorpyrifos by canceling registration of the pesticide by the Department of Pesticide Registration. Chlorpyrifos use in agriculture has been under federal and state regulatory review for the last several years. Chlorpyrifos for use in structural pest control and for sale in consumer products ended in 2000 due to a voluntary agreement between the manufacturers and EPA.
"University of California Agriculture and Natural Resources (UC ANR) carries out the Land-Grant mission of University of California to seek scientific solutions to address society's needs and problems. As a part of UC ANR, the Statewide Integrated Pest Management Program (UC IPM) provides research-based information to manage pests while protecting human-health and the environment. UC scientists have spent many years researching alternatives to chlorpyrifos and educating state-licensed pest control advisers on effective use of the alternatives. For example, improved integrated pest management of insects in almonds eliminated the need for winter application of chlorpyrifos on the 1,390,000 acres of almonds in California. Overall, this work contributed to the greater than 50% decrease in chlorpyrifos use in all of California agriculture from 2006 to 2016.
"In 2014, UC IPM started a two-year project, funded by California Department of Pesticide Regulation, to identify the pest-crop situations where there were no or few alternatives to chlorpyrifos. That project identified specific needs for additional research on alternatives to manage weevils and aphids in alfalfa, leaf-footed bug and stink bugs in almond, ants in citrus, and aphids and whiteflies in cotton. UC research and extension continues to seek solutions to these difficult pest management problems. Previous research in many other pest-crop situations had already identified and supported implementation of alternatives to chlorpyrifos.
"UC ANR will continue to work closely with the State of California and agriculture to protect the health of Californians and our environment while providing effective pest management solutions to farmers."
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