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Fall round up: all potatoes and no gravy

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
16
Description: 

Matt and Erin wrap up a few loose ends before the holiday week. First, Matt shares DowAgroSciences sulfoxaflor insecticide got a renewed registration. This insecticide targets fluid-feeding insects and was an option for soybean aphid before it was canceled in 2015. Now, sulfoxaflor can be used in a number of crops, but not for corn or soybean; cotton and sorghum have emergency labels in some U.S. states. Over the weekend, a soybean aphid Biotype-2 colony died due to a bad compressor in a growth chamber. Aphids don't tend to do well in temperatures over 100 degrees, and these ladies got cooked. Our labs host all four soybean aphid biotypes plus a few other aphid colonies. Colony management is really important and the maintenance is ongoing to keep plants and aphids healthy. Iowa State University features a 3MT (Three-minute thesis) oral competition this week. Three people featured insect-related presentations (a long video of all the speakers can be found here).

Upcoming extension events:

ICM Conference (30 Nov, 1 Dec) in Ames

Crop Advantage Series (January 2017) in Iowa

CCA Online Review Course, (on demand)

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Category: 
Chapters: 
Time: 
00:01:30
Title: 
Registration renewal for Dow AgroSciences sulfoxaflor
Time: 
00:07:30
Title: 
Soybean aphid biotype colony crash
Time: 
00:15:20
Title: 
Upcoming events

Insecticides up for review

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
17
Description: 

It's the first podcasting episode of 2017! Matt and Erin talk briefly about a few topics related to insecticides today. First, Erin recaps the findings of her insecticide resistance project from 2016. A field sprayed twice with a pyrethroid (bifenthrin) did not have efficacy against soybean aphid. She conducted an assay and discovered elevated resistance ratios for bifenthrin and lambda-cyhalothrin. Distinguishing insecticide group will become important for future growing seasons so farmers can prolong the efficacy of pyrethroids and organophosphates. Learn more about insecticide groups and resistance management at the IRAC website. Matt shared updates on pending EPA approvals of existing insecticides. Chlorpyrifos, an organophosphate, had an open comment period that closed January 17, 2017; read more about the health risk assessment for chlorpyrifos. In addition, the EPA has four public comment dockets open now regarding pollinator-only risk assessments for the neonicotinoid insecticides clothianidin, thiamethoxam, and dinotefuran. 

Erin and Matt are speaking at the ISU Crop Advantage Series this month. Find locations and registration details here. Erin is also speaking on a resistance management panel at the 2017 Iowa Soybean Research Conference on February 8, 2017. 

Insecticide Resistance Management Committee

Watch an IRAC video on how insecticide resistance happens!

Image(s): 
Insecticide Resistance Management Committee
Category: 
Chapters: 
Time: 
00:02:10
Title: 
Soybean aphid pyrethroid resistance update
Time: 
00:09:00
Title: 
Insecticides up for review by the EPA

You mite want to listen to this one: spider mite management

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
18
Description: 

In this episode, Matt and Erin talk about managing twospotted spider mites in soybean. Considering other pests is important, given the non-target effects with an application. This is particularly true if soybean aphid is in the field because of recent reports of pyrethroid resistance. They discuss options, including using miticides to suppress mite populations. Implications of pest ecology and economics plays a part in managing soybean pests. 

Twospotted spider mite

Twospotted spider mites. Photo by Frank Peairs; www.ipmimages.org.

Image(s): 
Twospotted spider mite
Category: 
Chapters: 
Time: 
00:02:30
Title: 
Spider mite management

It's the Flu Game!

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
19
Description: 

Matt's a bit under the weather in this episode, but that won't stop his awesome commentary (see connection to Michael Jordan here)! Today, Matt and Erin talk about a new research development with soybean aphid. The entire genome was recently sequenced; see journal paper here). This is only the fourth aphid genome to be sequenced so far. Colleagues, Drs. Brad Coates and Andy Michael, helped generate data for this journal article. Matt explains the reasoning for sequencing the genome of pest species like soybean aphid. Once we have a better understanding of the genetic makeup of a pest, we can try to disrupt it and make them less successful. Then, Erin shares some recent questions coming to her from around Iowa - particularly if snow cover can help insects survive the winter. 

Category: 
Chapters: 
Time: 
00:04:45
Title: 
Soybean aphid genome sequenced
Time: 
00:14:50
Title: 
Winter survival of insects

Gosh, it's hot

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
20
Description: 

It's unusually warm this February episode. Like Bugs Bunny cartoon said - Gosh, it's hot! Matt and Erin talk about accumulating degree days for the state so far in 2017. Northern counties have accumulated between 16-22 degree days, while southern counties have accumulated 50-53 degree days. Erin uses the ISU Agronomy Mesonet to estimate temperatures. Matt also shared that the Toth Lab is noticed honey bee foraging already this year. There may not be much to feed on right now, which is concerning to beekeepers. Matt also shared some information on pyramided host plant resistance options for farmers in Iowa. Finally, Erin encouraged new agronomists to attend the Crop Scout School in Ames on March 25. 

 

Category: 
Chapters: 
Time: 
00:03:09
Title: 
2017 degree day update
Time: 
00:06:00
Title: 
Honey bee activity update

The end (of season 7)

Show: 
Soybean Pest Podcast
Season: 
7
Episode: 
21
Description: 

In the last episode of season 7, Matt and Erin talk about two new insecticide options for soybean aphid in Iowa. Movento and Sivanto by Bayer CropSciences are products that target fluid-feeding pests, like aphids, and are considered reduced-risk options compared to broad spectrum insecticides. Movento is a Group 23 and Sivanto is a Group 4D. To learn more about these insecticide groups, visit the IRAC website.

Category: 

Season 8: a new beginning

Show: 
Soybean Pest Podcast
Season: 
8
Episode: 
1
Description: 

It's a new beginning for the podcast - Season 8 starts today! Matt and Erin have a bit of random conversation at the beginning like usual. But they eventually provide a summary of the recent new of an organophosphate, chlorpyrifos. The EPA has been dealing with a petition to revoke tolerances for this widely-used insecticide. The EPA will not move forward with restricting chlorpyrifos in any crop; this could be important as farmers make product choices for 2017. Erin wrote a recent ICM Blog about it. Matt shared updates about his recent travels to the S1055 Soybean Entomology Working Group meeting in Memphis where he compares soybean production in the North Central Region to the South. Surprise - it's a lot different! Erin wraps up by providing overwintering mortality predictions for bean leaf beetle. The 2016-2017 winter was moderate and about half of the beetles are expected to survive. Read more in her recent ICM News article

Bean leaf beetle

Bean leaf beetle adult. Photo by Winston Beck, ISU. 

Image(s): 
Bean leaf beetle
Category: 
Chapters: 
Time: 
00:04:10
Title: 
EPA retains all chlorpyrifos tolerances
Time: 
00:13:08
Title: 
Soybean Entomology Working Group Meeting
Time: 
00:16:15
Title: 
Bean leaf beetle overwintering mortality predictions

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

Jiminy Crickets!

Show: 
Soybean Pest Podcast
Season: 
8
Episode: 
11
Description: 

Matt and Erin were supposed to be in Savannah, GA for a soybean symposium this week. But due to Hurricane Irma, the conference was canceled and they created a bonus episode of random topics. Soybean is quickly maturing throughout Iowa and insects are making preparations for the winter. Matt summarized a last-minute soybean research symposium recapping some of the presentations planned for the Georgia gathering. Both Matt and Erin noticed a lot of wasp activity around human structures and Matt explained they lose their social structure this time of year. Erin thinks she might have Lyme disease and will update listeners on her progress the next episode (teaser!). ISU faculty member, Ryan Smith, shared the blacklegged tick is expanding range in Iowa and the proportion of infected ticks is increasing in Iowa (see this survey summary for more details). Dr. Smith also said there are 195 confirmed cases of Lyme disease in Iowa so far this year. Finally, Matt talks about another great F.I.T. of Ward Kimball, creator of Jiminy Cricket. 

Jiminy Cricket

Image(s): 
Jiminy Cricket
Category: 
Chapters: 
Time: 
00:06:45
Title: 
Social wasps active now
Time: 
00:13:10
Title: 
Lyme disease update
Time: 
00:16:45
Title: 
F.I.T. with Ward Kimball

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