(S1:E5) Soybean aphid populations' build

For the week of August 3, 2009, Drs. Hodgson and O'Neal discuss scouting reports from the previous week indicating increases in aphid populations. In our longest podcast to date we discuss several issues growers should consider with regard to spraying insecticide for soybean aphids, including the potential for spider mite outbreaks.

(S1:E4) Slow growing aphid populations

For the week of July 27, 2009, Drs. Erin Hodgson and Matt O'Neal review reports and data on soybean aphid populations from Iowa and the midwest. Although large populations can be found, many growers are reporting low populations with less than 50% of the plants infested with aphids. Also, Erin discusses reports of soybean defoliation by insect pests that are not aphids.

(S1:E3) Aphids on the move in Iowa

For the week of July 20, 2009, Drs. Erin Hodgson and Matt O'Neal discuss the state of aphid populations in Iowa. Aphids are now well established in many fields but at low populations. We discuss factors that can contribute to the likelihood of an outbreak. Also, Erin and Matt make a joke about aphid perspiration.

Soybean Aphid Podcasts added to soybeanaphid.info

Beginning in July, we have added podcasts to our site. A new podcast will be posted once a week during the growing season. In these podcasts will be updates on the status of the soybean aphid and insights into its management from research at ISU.

Please note the comment section added to each podcasts as well as the link 'Contact Us' in the upper right hand corner. Each of these are ways for you to ask Dr. Hodgson and O'Neal questions about soybean aphids and soybean pest management. We will address these questions and comments in future podcasts.

(S1:E2) Introducing Erin Hodgson

In this edition, Dr. Erin Hodgson is introduced. She is the new assistant professor in the Department of Entomology at ISU with extension and research responsibilities focused on corn and soybean production. Dr. Hodgson's Ph.D. was spent studying the soybean aphid and how best to scout for it. She describes some of the work she is doing this summer, helping growers manage insect pests in soybean fields.

(S1:E1) First soybean aphid podcast

First podcast about soybean aphids in Iowa and beyond

Soybean Aphid Resources

Specific topics regarding soybean aphid biology and management:

  • Review of soybean aphid management tactics
    In this reprint from the 2005 ICM conference is a review of research conducted at Iowa State University regarding different management tactics for soybean aphid, including herbicide-insecticide tank mixes, seed treatments and the current recommendation.
  • Speed Scouting for soybean aphid University of Minnesota entomologist are developing this streamlined sampling method that employs the 250 aphids/plant threshold.
  • Aphid estimator
    Use this spreadsheet to calculate potential aphid population growth 7 days into the future using a temperature-based model.
  • Soybean Aphid suction trap network
    Visit this site for weekly updates of winged soybean aphids caught in a network of suction traps deployed across the midwest. Winged aphids during the summer travel between and within soybean fields. In the fall (September to October), winged soybean aphids migrate back to buckthorn where they overwinter. Ongoing research is investigating whether these numbers are an indicator of successful soybean aphid overwinter and thus an indicator of the risk for outbreaks for the subsequent summer.
  • SAILS-Soybean Aphid IPM on a Landscape Scale. This multi-state, USDA-funded project is designed to improve and integrate management of soybean aphid into Midwest cropping systems (soybeans, dry beans, snap beans, and others). Visit this site for quarterly research updates on soybean aphid management tactics including scouting, tank-mixes, and biological control