Armyworm

New Armyworm Monitoring Information released

New Armyworm Monitoring Information released

UCCE Rice Farm Advisor Luis Espino has been providing updates of the traps set to monitor armyworm moth populations at multiple locations throughout the rice growing region.

Luis writes that “There are a total of 15 traps set up across the Sacramento Valley. Numbers are still low, with a small up-tick in traps located in Glenn and Butte County. About this time last year, we were catching about 4 moths a night; this year we are catching less than one moth a night (and about 1 moth a night at the “Afton Rd and Wickman Rd” and “Hwy 45 and White Rd” locations). Last week was much cooler than usual, delaying development and maybe limiting moth flight. As temperatures go up again this week, we might start seeing catches climb up. Lower moth numbers at this time may result in lower armyworm pressure later or, if numbers climb back up next week, later than usual worm infestations.”

Please read his updates and follow the progress at: http://rice.ucanr.edu/armyworm_traps/.  At this link, you can sign up for armyworm updates via e-mail.

More Armyworm Stories

Armyworm Numbers rising

Armyworm Numbers rising

From Luis Espino UCCE Rice Farming Systems Advisor

The number of moths trapped continues to increase. We are finding numerous medium sized worms, maybe second, third, and fourth instars in fields where moth counts are above 30 per night. Worms have moved from levees and borders to basins. This is the time to scout and look closely for defoliation in the upcoming two weeks.

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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.

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