Clay County Pest Update
– as rice begins to head be on the lookout for rice sting bug. I have been seeing pretty high numbers around edges of fields and on grass. Numbers have been all over the place depending on the area. Hopefully the population will spread out as more rice heads. With the decrease in efficacy seen with lambda-cyhalothrin since 2020 we are looking at doubling the cost of a single application for RSB control. With this in mind, and our data from numerous sites over the last 6 years, we suggest raising the early season threshold (flowering and milk) to 10 per 10 sweeps and sticking to that throughout the growing season. We have rarely documented yield loss from rice stink bug in our plots unless numbers exceed 15 per 10 sweeps. The only reason we have not officially changed the threshold is because we are trying to repeat these studies in much larger plots to ensure that there is no yield loss at these RSB levels.