Industry News

Thiobencarb Monitoring continues to exceed

tractor at sunset

The Cal/EPA leadership is taking a higher interest in reviewing programs as a result in the change in the State and Agency Administrations. Compliance with thiobencarb permit conditions are under scrutiny and could result in changes to future use of this important herbicide. The monitoring results are our measure of compliance with the thiobencarb permit conditions

Following the sixth week of monitoring, we continue to see exceedances of the 1.5 µg/L (parts per billion) performance goal. For the month of May we recorded six exceedances and two so far in June. The numbers have not been extremely high, yet occurring later than normal in comparison to results from the previous years. Let’s hope the monitoring results recover to  acceptable levels in the drains. Fortunately, the river site and city drinking water intakes remain at non-detect for thiobencarb. This is rather unusual, since the percent of Sacramento River at the City of Sacramento intake is half that of the monitoring results from all previous years.

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Lambda-cyhalothrin to be extensively monitored in Rice this year

Lambda-cyhalothrin to be extensively monitored in Rice this year

We start monitoring Lambda-cyhalothrin (Warrior, Lambda-cy, Silencer, etc.) in the water column plus sediment sampling this year. The sampling takes place at the drain sites we use for thiobencarb monitoring. This will be our first experience with compliance to the Total Maximum Daily Load (TMDL) requirements. The TMDL is a forever monitoring program and we anticipate positive results leading to future modifications. We have never had an issue with our long history monitoring the pyrethroid insecticides. However, we have no ability to correlate the past results with the newer and much lower analytical methods.

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Here are Key Links and Updates for Rice Pesticides

Here are Key Links and Updates for Rice Pesticides

The following links include select pesticide updates as an effort to provide you with easy access to the information. Please remember the pesticide label is the ultimate level of enforcement and the county permit conditions can supersede the label with more restrictive requirements. You will find permit conditions and supplemental labels for thiobencarb. Permit conditions for some pesticides have been changed to active ingredient rather than trade or product name due to new product registrations. Products such as Butte Herbicide, RebelEx CA and RiceEdge 60DF are combination formulations and permit conditions could apply to one of the active ingredients. The EPA Reg. No. provides additional identification of the individual pesticide products on the Rice Pesticide Update Table.

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