Industry News

Thiobencarb Monitoring Schedule

Weekly monitoring will start at all sites tomorrow, May 7. We increase monitoring around the Memorial Day holiday weekend with the program continuing into July.

Please reference the thiobencarb waterhold chart in communication when making irrigation decisions. The Department of Pesticide Regulation provides waterholding information in the Rice Pesticides Water Management Requirements Summary (pdf) and the table we created of waterhold, pre-harvest interval and restricted entry interval for rice pesticide (pdf). Please note, the table does not supersede the label instructions and county permit conditions.

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Pyrethroid TMDL for 303(d) listed water bodies

Pyrethroid TMDL for 303(d) listed water bodies

Pyrethroid insecticides have been under scrutiny for several years resulting in recent changes to water quality requirements. The changes set monitoring levels for pyrethroids at nanograms in surface waters. Consistent exceedances of the levels could result in additional restrictions to pyrethroid use, or designate a drain as impaired with future restoration to correct the water quality. Last year, one of the water quality coalitions had a detection that could be problematic under the new standards.

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Handler Guidance Verifying Use of Certified or QA Seed

In order to prevent the spread of weedy rice, effective in 2019, growers may only use seed that has been enrolled in a certification program by an Association of Official Seed Certifying Agencies (AOSCA) member or is subject to a third-party quality assurance program approved by the California Rice Certification Committee. Currently, California Crop Improvement Association (CCIA) is the only organization offering these certifications for California rice.

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