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Herbicide or herbivore?

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
7
Description: 

Today, Matt and Erin talk about current pest activity in Iowa. Specifically, the last week was very hot (>90 degrees) and that isn't conducive for soybean aphid growth. So no new detection since the last podcast (but not surprised because aphids don't do well under consistently hot temps). Also, some alfalfa farmers are starting to see potato leafhopper injury. Matt heard about early twospotted spider mite injury in Illinois and that is a concern for extended hot and dry periods. Southeastern Iowa is abnormally dry right now and so be looking for initial spider mite infested along edge rows. Mite injury should not be confused with herbicide injury that is also starting to show up in some soybean fields. Finally, Erin and Matt talk about Pollinator Fest displays at Reiman Gardens. Erin will have the kids make Wikki Stik insects and Matt has prepared a honey tasting station.  

potato leafhopperpotato leafhopper burn

Potato leafhopper (Photo by Marlin Rice) and classic "hopper burn" (Photo by Purdue Extension). To learn more about potato leafhopper, read this ICM News article.

twospotted spider mitetwospotted spider mite injury

Twospotted spider mite (Photo by Frank Peairs) and spider mite injury (Photo by Whitney Cranshaw). To learn more about scouting for twospotted spider mite, read this ICM News article

mantid art project

Wikki Stik insect art for Pollinator Fest (Photo by Erin Hodgson). 

Image(s): 
mantid art project
potato leafhopper
potato leafhopper burn
twospotted spider mite
twospotted spider mite injury
Category: 
Chapters: 
Time: 
0:02:05
Title: 
Soybean aphid numbers slightly decrease
Time: 
00:02:50
Title: 
Potato leafhopper injury noted in alfalfa
Time: 
00:03:35
Title: 
Twospotted spider mites found in Illinois
Time: 
00:09:05
Title: 
Pollinator Fest displays

A new pub, workshops and crops switch gears

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
8
Description: 

Today, Erin is so excited to tell everyone about her new, 12-page publication called, "Getting to Know the Insects." This publication is geared to youth and new agronomists that want to learn more about how to identify, sample and management field crop insects. It's available for $2 in the ISU Extension Store. Next, Matt and Erin talk about corn and soybean switching to reproductive stages around Iowa and implications for pest scouting and management. In particular, hot and dry weather favors twospotted spider mites, but expected cooler temperatures can promote soybean aphid populations. Erin also mentions a rare pest, redheaded flea beetle, showing up in a cornfield this summer. Read Erin's blog to see feeding injury on corn leaves. Erin also mentioned some upcoming field days at the ISU FEEL demo lab located between Boone and Ames, Iowa. The first is the Crop Management Clinic (13-14 July), which features a number of different topics related to crop production and protection. The second is an all-day workshop on corn insects (29 July). We aren't sure why, but there are a lot of references to MMA fighters in this episode??

redheaded flea beetle on soybean

Redheaded flea beetle on soybean. Photo by Lewis Veith.

Image(s): 
redheaded flea beetle on soybean
Category: 
Chapters: 
Time: 
00:00:20
Title: 
Getting to Know the Insects publication
Time: 
00:11:55
Title: 
ISU Extension and Outreach Crop Management Clinic
Time: 
00:13:35
Title: 
ISU Extension and Outreach Corn Insect Workshop

Drought and spider mites go together like PB & J

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
9
Description: 

Don't drought this episode was a good one. Matt shares an update on the Iowa drought and encourages people to use the U.S. Drought Monitor as a tool to measure landscape moisture levels. Matt and Erin transition and talk about pest activity around the state, starting with twospotted spider mite. Erin wrote a recent ICM News article that talks about scouting and managing this pest that favors hot and dry conditions. Spider mites can be first detected around field perimeters and then eventually infest the field interior. Discoloration, webbing and stunted plants are often the result of heavy spider mite feeding. Erin mentioned a new miticide, AgriMek, that has promise for suppressing mites in corn and soybean; find the label here. The conversation switched gears to talk about some corn silk clipping pests, like Japanese beetle and corn rootworm adults. Scouting to determine pest densities and potential interference with pollination is important. Learn more about Japanese beetle ID, scouting and management with an ICM News article

twospotted spider mite

Twospotted spider mite. Photo by Frank Peairs, www.ipmimages.org.

bean leaf beetle

Bean leaf beetle. Photo by Marlin Rice. 

 

Image(s): 
twospotted spider mite
bean leaf beetle
Category: 
Chapters: 
Time: 
00:04:00
Title: 
Twospotted spider mites
Time: 
00:09:37
Title: 
Bean leaf beetle
Time: 
00:11:12
Title: 
Japanese beetle and corn rootworm silk clipping

Aphid resistance is our new reality

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
11
Description: 

The podcast took a break while Matt was on vacation and Erin was on the extension circuit. But they're back and talking about recent pest activity in Iowa. First, Erin shares updates about treating for soybean aphid in northern Iowa. Populations were erratic, as usual, and some fields exceeded threshold in early- to mid-August. A few people noticed poor performance of bifenthrin, a pyrethroid, for soybean aphid. This isn't a huge surprise, given there are pyrethroid-resistant populations in southwestern and southcentral Minnesota in 2015 and 2016. It is important to assess insecticide efficacy and determine potential issues with soybean aphid. In general, soybean are approaching mid- to full seed set throughout Iowa and yield responses are not consistent when applied after full seed set. 

In addition, Erin has noted some corn fields with abundant aphid populations. Some fields exceeded 1,000s per plant and were treated with aerial applications last week and this week. Economic thresholds for these pests are not well defined, but Erin has an ICM News article to take into consideration. 

corn aphids

Matt and Erin will be at the 2016 Farm Progress Show near Boone, Iowa on August 30. Erin will be at the ISU Event Tent in the morning and have a presentation at 10am. Matt will be there in the afternoon - so stop by and see them!

Image(s): 
corn aphids
Category: 
Chapters: 
Time: 
00:03:30
Title: 
Soybean aphid management
Time: 
00:14:10
Title: 
Corn aphid management

Interview with Ric Bessin: wireworms, stink bugs and bee stings

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
15
Description: 

In this episode, Matt and Erin interview the 2016 Gunderson Memorial Seminar speaker, Dr. Ric Bessin. Ric is a professor and extension entomologist at the University of Kentucky. His areas of extension and research interests range from row crops to specialty crops, and has a focus on IPM.  Their conversation starts off talking about agriculture in Kentucky compared to Iowa.

Ric Bessin

He also shares observations about early season pests, like wireworms, and moves to brown marmorated stink bug, an invasive species causing havoc in Kentucky. Ric was also a Peace Corps volunteer before graduate school, and where he spent time beekeeping. He shares an interesting story about using bees to help with pain management. 

Image(s): 
Ric Bessin
Category: 
Chapters: 
Time: 
00:05:45
Title: 
Wireworm management in Kentucky
Time: 
00:16:00
Title: 
Peace Corps, beekeeping and honey
Time: 
00:25:50
Title: 
Bee sting therapy

Don't freak out (about a few aphids)

Show: 
Soybean Pest Podcast
Season: 
8
Episode: 
4
Description: 

Today, Matt and Erin cover a lot of topics. First, Erin summarizes her recent trip to Indianapolis for the 2017 North Central Branch ESA meeting. Lots of interesting papers and posters were presented this week. Also, the first confirmation of soybean aphid in Iowa happened again this week. It is typical to find aphids during early June in vegetative soybean, so listeners shouldn't be too concerned at this time. Other pest activity updates include more black cutworm and armyworm, plus a few bean leaf beetles and slugs. Matt follows up on the slug conversation by highlighting a recent interview with Penn State entomologist, John Tooker. As a follow up to the IRAC discussion a few episodes ago, Erin reminds everyone that the organization puts out a few helpful references on insecticide modes of action and resistance management. 

Two events of interest coming up:

Pollinator Fest at Reiman Gardens is on June 24. It's free this year, so bring your family for some fun hands-on activities centered around pollinators. 

Matt and Erin are organizing a field day with Greg Tylka on August 17. The event is at FEEL near Boone, IA and registration is open now

Category: 
Chapters: 
Time: 
00:03:30
Title: 
Soybean aphids found in Iowa
Time: 
00:08:00
Title: 
Slug research in popular press
Time: 
00:14:25
Title: 
IRAC references

Field crop pest updates

Show: 
Soybean Pest Podcast
Season: 
8
Episode: 
7
Description: 

Today, Erin is without her podcasting bestie, Matt. She summarizes the activity of a few field crop pests in Iowa. First, she mentions Japanese beetle is active in soybean now and will move to corn with the emergence of silks. There are also European corn borer egg masses and small larvae in non-Bt corn now. You can access a free publication to learn more about scouting and management of ECB. Erin also gives an update on thistle caterpillar and soybean aphid from the last episode - both pests are still active right now. Finally, she highlights potato leafhopper as an occasional pest of soybean and alfalfa. You can register for some upcoming demonstration events at FEEL for July 12 (Diagnostic Clinic) and July 13 (Management Clinic) right here

Category: 
Chapters: 
Time: 
00:02:48
Title: 
European corn borer
Time: 
00:03:52
Title: 
Thistle caterpillar and soybean aphid
Time: 
00:06:00
Title: 
Potato leafhopper

Warm, wet weather brings all the black flies to the yard

Show: 
Soybean Pest Podcast
Season: 
9
Episode: 
3
Description: 

Today, Matt and Erin bounce around a few topics of insect-related news. The black flies and mosquitoes have been especially aggressive in central Iowa this week. Erin summarizes field crop pest activity in central and southern Iowa, mainly some caterpillar feeding in corn and bean leaf beetle feeding in soybean. Matt's F.I.T. is somewhat random, but eventually ties it together with an insect. 

Category: 
Chapters: 
Time: 
00:04:35
Title: 
Recent pest activity in Iowa
Time: 
00:10:10
Title: 
F.I.T. Cosmic Thing and Junebugs

A case of "false" identity

Show: 
Soybean Pest Podcast
Season: 
9
Episode: 
6
Description: 

In this podcasting episode, Matt and Erin talk about a disagreement in insect ID. The false Japanese beetle often emerges before the true Japanese beetles and people mistakenly confuse the two species. Erin recently wrote about the timing of adult emergence of JB in ICM News and how to tell the difference between the two species in an ICM Blog post. By the way, we think Erin was right on this one even though Matt was super confident! Matt gives a quick summary of hexapods used as college team mascots (Thanks to fellow podcaster, Jonathan Larson at UNL, for the list!). Pollinator Fest is next weekend at Reiman Gardens. 

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