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.
More information, pictures, and graphs: http://rice.ucanr.edu/armyworm_traps/