Hot weather isn't favorable for soybean aphid, so numbers are still down. But spider mites and other pests thrive in these conditions.
Yes, Phil, they are spraying for aphids in Iowa. Erin and I discuss where in Iowa soybean aphid outbreaks are occurring and the factors that help explain some of the variation in aphid populations between fields. The occurrence of two other pests are noted. Finally, Matt was interviewed on Agribusiness Reports about his lab's work on efforts to conserve bees. For more info see:
(Skip to 1:49): http://whotv.com/2013/08/27/agribusiness-hot-weather-threatens-promising-hog-market/
Today, Matt is back from vacation and talks with Erin about the latest insect activity in Iowa. Soybean aphids can be found in northern Iowa, but at very low numbers. Japanese beetles are feeding in corn and soybean in central counties, and a mixture of caterpillars are feeding in soybean.
[Apologies for the poor sound quality of Erin's microphone]
In this podcast episode, Matt and Erin recap a few extension activities they recently participated in this week. It started with being an "expert" at the Iowa State University display building in the 2016 Farm Progress Show near Ames, IA. Both Matt and Erin helped answer questions about entomology and agriculture, and they also learned from the other displays in the building (something about underwear?). One of the main attractions was a monarch butterfly display and also samples of a new invasive weed, palmer amaranth. Matt also saw a cool UAV display with potential use in site-specific management. Erin also was a judge for a regional crop scouting competition for high school students. It included two teams each from Iowa, Indiana and Nebraska. There are some bright, young agronomists out there. Erin switched gears to talk about pest updates in Iowa, but crops are quickly maturing and the time to make treatments is generally done for this growing season.