soybean aphid

Podcast part 2-Erin is crushing it (still no aphids)

Show: 
Soybean Pest Podcast
Season: 
12
Episode: 
6
Description: 

Erin's back.

ON this episode we talk soybean aphids (so few), soybean gall midge (they are active agian), redheaded flea beetle (not really a pest, but common in some parts of Iowa) and on ogoing research.

Erin shares with us a might haul of articles she just published in the Journal of Integrated Pest Management. Check this links for her work on some key pests, including one on the soybean gall midge (is it new to science? read and find out).

1.Identification and Biology of Common Caterpillars in U.S. Soybean

https://academic.oup.com/jipm/article/12/1/13/6175259

2.Soybean Gall Midge (Diptera: Cecidomyiidae), a New Species Causing Injury to Soybean in the United States 

https://academic.oup.com/jipm/article/12/1/8/6140900

3.Current Distribution and Population Persistence of Five Lepidopteran Pests in U.S. Soybean

https://academic.oup.com/jipm/article/12/1/11/6175257

4.Needs Assessment for Corn Insect Pest Management in Iowa

https://academic.oup.com/jipm/article/12/1/pmab021/6319925

 

Finally, we discuss the FIT from last week. Check out the photo and hear Erin nail it!

Read more about the insect that was the topic of this FIT here: https://beetlesinthebush.com/2013/11/29/t-g-i-flyday-soybean-nodule-fly/

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It's still dry, insects are active, and Matt is talking about pollinators

Show: 
Soybean Pest Podcast
Season: 
12
Episode: 
3
Description: 

The 4th of July weekend delayed Matt posting this podcast.

We talk about pests: corn rootworms, japanese beetles, and soybean aphdis. The dry weather is making people worried about two-spotted spider mites, so we talk a bit about that.

Matt gives shares a "Fun (?) Insect Trivia" question about the conservation reserve practice described as "Pollinator Habitat" or CP42.  Some new analysis of where CP42 is located in Iowa is the source of this question.

We talk a bit about how and where this conservation practice is placed in Iowa farm land.

For more information about CP42, visit https://www.fsa.usda.gov/Internet/FSA_File/cp42_habitat.pdf

 

Category: 

2 late 2 sPRAY

Show: 
Soybean Pest Podcast
Season: 
8
Episode: 
9
Description: 

Matt and Erin took a short podcasting break but are back to summarize late season soybean pest activity. Erin talks about a slight resurgence of soybean aphid populations in northern Iowa. Read more about treating at full seed set in a recent ICM Blog. Erin also recommends scouting in late August/early September for second-generation bean leaf beetles, as feeding injury to pods and seeds could be significant. Matt has noticed perhaps early field senescence in some commercial fields in Iowa. He also took a trip to Mississippi to see soybean production and learn more about pollinator protection. This podcast also features a F.I.T.!

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Forgotten but not gone: midseason pest update

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

It seems like a long time since the last episode and that's because it was! Matt and Erin are back to talk about pest updates in Iowa. Drought stress throughout much of the state has been ideal for twospotted spider mite. Erin reports Some injury has been observed in corn and soybean this summer. Treatments are going on now throughout some southern Iowa counties. In addition, soybean aphid continues to be an erratic pest. Some populations are building up in northern Iowa counties, but most fields are not reaching the economic threshold in July. Matt elaborates about high numbers of Japanese beetle and they talk about the use of pheromone traps as a management tool. Finally, Matt talks about a new Science research paper that has inconsistent data on the effect of neonicotinoid seed treatments on wild and managed bees in Europe. 

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Is this 2007 all over again?

Show: 
Soybean Pest Podcast
Season: 
8
Episode: 
6
Description: 

In this mid-June episode, Matt and Erin start off by summarizing current soybean aphid activity around the state of Iowa. Populations are showing up over much of northern Iowa the last two weeks. Some fields have approached infestations ranging from 10-50%, although the density per plant remains low. Under ideal conditions, these populations could exceed the economic threshold in a few weeks. Brian Lang also found an aphid mummy, which is also early compared to most summers. Erin talked about a new publication for European corn borer that is available at the ISU Extension Bookstore. The 12-page pub reviews identification, life cycle, plant damage, scouting and treatment recommendations for this devastating pest. In their new segment, Matt talks semantics about how to spell one of the most widely recognized insects in the world. 

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
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Stop touching me!

Show: 
Soybean Pest Podcast
Season: 
6
Episode: 
15
Description: 

If a soybean aphids could talk, I would imagine them screaming, " Stop touching me!". Many Iowan fields are infested with soybean aphid this summer. Erin and Matt talk about what to do when these increasing populations happen late in the season. A short conversation about aphids in corn also happens. Finally, they get diverted and talk about winged aphid formation based on several cues, like touching and predators. 

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What do aphids and rootworms have in common?

Show: 
Soybean Pest Podcast
Season: 
6
Episode: 
14
Description: 

In this episode, Matt and Erin start by talking about foliar insecticide sprays for soybean aphid. Erin has a large efficacy evaluation program and screens many different products every year. She publishes the results in a Yellow Book (see previous editions here: http://www.ent.iastate.edu/soybeanresearch/content/extension). Then Matt talks a bit about corn rootworm biology and why that might be important in Iowa soybean. 

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