Recent News

2019 Armyworm Trapping Update

2019 Armyworm Trapping Update

From Luis Espino UCCE Rice Farming Systems Advisor

The number of true armyworm moths has shot up quite a bit in several locations. True armyworm has been the problem species in the past. Western yellowstriped armyworm moths have been variable, increasing in some locations, decreasing in others, but in general, the numbers are much lower than at the beginning of the season.

READ MORE

Thiobencarb Monitoring Moves to Fifth and Sixth Weeks

Thiobencarb monitoring results report numbers at most sites on May 30 and June 4. The monitoring numbers exceeded the 1.5 µg/L (parts per billion) performance goal at the upper part of Colusa Basin Drain (CBD5) on May 30, and the lower part of the drainage (CBD1) May 30 and June 4. This now counts as seven exceedances of the performance goal into the sixth week of monitoring.

READ MORE

Thiobencarb Fourth Week of Monitoring

Memorial Day weekend typically marks the fifth week of thiobencarb monitoring with peak use and numbers exceeding the 1.5 µg/L (parts per million) performance goal. For this atypical year, the holiday marked the fourth week of monitoring with numbers at all sites except the Sacramento River location. The monitoring results recovered to acceptable levels after a rough start where the performance goal was exceeded two and three weeks into the program.

READ MORE
After slow start, Armyworm numbers are on the rise

After slow start, Armyworm numbers are on the rise

By Luis Espino, Rice Farming Systems Advisor, Butte and Glenn Counties

The number of moths trapped went down due to the cold weather. But numbers are coming back up again, mostly due to increases of western yellowstriped armyworm. We are starting the season with much higher number of moths than in previous years. Keep a close eye on early planted rice that is out of the water or if you are draining for stand establishment.

READ MORE
Thiobencarb Results Continue to Exceed at Third Monitoring Event

Thiobencarb Results Continue to Exceed at Third Monitoring Event

Thiobencarb exceedances over the 1.5 µg/L (parts per million) performance goal with a reading of 2.3 µg/L at the Colusa Basin Drain 5 (CBD5) site off Highway 20 and 2.7 µg/L at the Colusa Basin Drain 1 (CBD1) location outside Knights Landing. There also was a detectable reading at the Sacramento Slough site. These exceedances were from the third monitoring event on May 21.

READ MORE