Drs. O'Neal and Hodgson give a quick update on the status of soybean aphid populations in Iowa. They also review the other insect pests that may be out this time of year feeding on soybean leaves.
Still very few aphids in the soybean fields of Iowa. Drs. O'Neal and Hodgson give an update and discuss the likelihood of a soybean aphid outbreak later this summer. Also, Dr. Hodgson gives us an update of events where she will discuss recent research and new tools for pest management in soybeans.
Aphids are still hard to find, but that doesn't mean that Matt and Erin can't find something to talk about. We discuss spraying insecticides based on a calendar date as opposed to spraying insecticide based on need (i.e. aphids populations above a threshold).
Winged aphids are still on the move in Iowa, although most fields still remain well below treatment levels. Neighboring states have notable aphids, so scouting should still continue.
Matt is on vacation, but the show must go on! Erin talks about recent soybean pest activity in Iowa, including the beginning of soybean aphid sightings in northern counties. Also, some are seeing green cloverworm starting to defoliate plants. Both are at sub-economic levels but continue to scout to make timely treatment decisions in 2015.
In this episode, Matt starts by sharing some of the night life stops in Dubuque, Iowa. Erin talks about common nuisance invaders moving into homes during this extended fall weather. Learn more about how to manage these pests here: http://bit.ly/1P3KcX2. For most of the time, Matt and Erin talk about a recent editorial letter in Nature Biotechnology (October 2015). The author(s) share a story of a recent scientist that accepted funding from industry and the unexpected implications from the public. Read the letter here: http://www.nature.com/nbt/journal/v33/n10/full/nbt.3384.html.
Today, Matt and Erin talk about the recent EPA proposal to revoke all tolerances to chlorpyrifos. This insecticide is an option in corn and soybean in Iowa and restricting or removing the use could have potential implications for field crop pest management. Matt shares a paper that shows a decrease of chlorpyrifos in corn but relatively steady use in soybean (doi:10.1088/1748-9326/10/9/094016). He isn't sure if revoking the use would have an immediate impact, but Erin offers a Coke analogy to say otherwise. To learn more about the EPA proposal and leave a comment, go here: http://www.gpo.gov/fdsys/pkg/FR-2015-11-06/pdf/2015-28083.pdf.
In this episode, Matt and Erin summarize a symposium they moderated at the national ESA meeting in Minneapolis. The topic was about the cost and benefits of neonic seed treatments from several different perspectives.
Soybeans are going into the ground, and Matt and Erin have started a new podcasting season. They talk about early-season soybean pests, like black cutworm and bean leaf beetle, and the likelihood of seeing injury this year. Read more about the predicted cutting date for black cutworm here:
http://crops.extension.iastate.edu/cropnews/2016/05/black-cutworm-scouting-advisory-2016. They also spend some time highlighting some new people and research projects going on this summer. Finally, Matt talks about a recent publication that looks at the probability of breaking even with different inputs.