Skip Navigation

2/28/2011 - 3/6/2011

Businesses Can Sponsor Soybean Field Guide Reprints

Adam Sission, Corn and Soybean Initiative

The ISU Corn and Soybean Initiative is updating the popular pocket-sized crop field guides. The Soybean Disease and Pest Management Field Guide – CSI 010, produced in collaboration with the Iowa Soybean Association, currently is under revision and will be renamed Soybean Field Guide. 

The new Soybean Field Guide, available later this year, will have more pages, include several new insects, have an expanded disease section with larger or multiple disease images, cover hail damage information, and contain other useful updates.

As a means of reaching a wider number of producers with the 2011 edition, Corn and Soybean Initiative is making it possible for companies to place small-batch reprint requests and have their logos printed on a prominent place on the back cover (see image below). Orders placed by interested agribusinesses will be combined into one larger print run, making the customized reprinting available at a reasonable cost to all participants.

Businesses interested in placing an order for personalized reprints should e-mail Adam Sisson at Orders must be submitted by March 16. In the e-mail order, indicate:
• the number of field guides being requested (300 copy minimum order)
• attach an .eps version of the business logo

The final cost for individual orders can only be determined when all orders are placed; however a general estimate can be provided before an individual order is placed.



Adam Sisson is a program assistant with responsibilities with the Corn and Soybean Initiative. Sisson can be contacted by email at or by calling 515-294-5899.

Cooperators Needed for Black Cutworm Monitoring

By Adam Sisson and Tamsyn Jones, Corn and Soybean Initiative

Cutworm monitoring season is fast approaching – and the Corn and Soybean Initiative could use your help! In partnership with the ISU Plant and Insect Diagnostic Clinic, the Initiative is once again helping coordinate the annual black cutworm (BCW) and western bean cutworm (WBC) monitoring networks in Iowa.

The program connects Iowa State with industry and farmer cooperators, who help monitor the arrival of cutworm moths – whose larvae feed on corn and can cause major yield loss when populations are high. The data helps Iowa State experts track pest activity, which in turn helps growers know when to scout and make treatment decisions.

• Black cutworm monitoring will begin April 1. To become a cooperator, e-mail Cooperators will receive a  trap kit in the mail with supplies, instructions and pest identification information. Traps will be similar to the one pictured below. The target sign-up deadline is mid-March to allow enough time for shipping. For more information, read this "Integrated Crop Management News" article.

• Western bean cutworm monitoring will start around July 1. To join the WBC network, e-mail ICM News has more information on the WBC trapping program  and WBC monitoring summary for 2010.



Adam Sisson is a program assistant with responsibilities with the Corn and Soybean Initiative. Sisson can be contacted by email at or by calling 515-294-5899. Tamsyn Jones is communication specialist with the Corn and Soybean Initiative. She can be contacted by emailing or calling 515-294-7192.

Brown Marmorated Stink Bug Detection in Iowa

By Laura Jesse, Plant and Insect Diagnostic Clinic and Erin Hodgson, Department of Entomology

The brown marmorated stink bug, (BMSB), Halyomorpha halys,  is a serious plant pest and household invader that has been making its way around the United States for the past decade. Recently Iowa State University Extension Plant and Insect Diagnostic Clinic (ISU-PIDC) and the Iowa Department of Agriculture and Land Stewardship confirmed that a single dead specimen of BMSB, was collected this February in Cedar Rapids, Iowa. This is the first confirmation of this pest in Iowa. However it is not known if this find indicates an established population or an isolated individual as BMSB travels readily in shipping containers and with people.
The brown marmorated stink bug submitted to the PIDC in 2011. This single dead insect was collected this February in Cedar Rapids, Iowa. The striped antennae, abdominal stripes and pale underside are characteristic of this insect. Photos by Donald Lewis.

Damage to crops
BMSB have been recorded causing economic damage to plants as far back as 2002 in Pennsylvania (where they were first detected), but in 2010 severe damage to fruit and vegetable crops were reported in the northeast. This insect has a wide host range that includes field crops like soybeans and corn, fruits and vegetables -- including apples, grapes, peaches-- and also ornamental trees and shrubs. New plant hosts will continue to be recorded as we learn more about this insect.

At this point, we do not fully understand the economic importance of BMSB in Iowa. For a complete host list (pp.30-33) and detailed information on BMSB see the USDA Risk Analysis.

BMSB feeds by puncturing plant tissues (leaves, fruits, stems) and sucking on plant juices with its beak, similar to aphids or leafhoppers. Damage can range from mild to severe and may appear as deformation, distortion, speckling, stunting, etc.

Two native stink bugs, the brown stink bug and the spined soldier bug, also occur in fields and gardens, and appear similar to BMSB. The spined soldier bug is a beneficial predator and the brown stink bug feeds on plants and is an occasional pest in Iowa.

The brown stink bug (left) and spined soldier bug (right) are similar to the BMSB but have more pointed ‘shoulders’ and lack the antennal stripes and clearly visible stripes on the abdomen.

Household pest
If the BMSB behaves in Iowa as it has in other states then homeowners will be the first to note its presence as it is a fall accidental invader. Homeowners on the East Coast describe the stink bug invasion as worse than boxelder bugs and lady beetles, combined. Two other similar insects can also overwinter in homes – the boxelder bug and the pine seed bug. However both of these insects do not have the rounded shield shaped body of the BMSB.

It is this habit of spending the winter in buildings that has aided the dispersal of BMSB by movement in containers and vehicles. If you have observed any insects similar to the BMSB in your house this winter please submit a sample (at no charge) or send a digital photo to the ISU-PIDC. It is only through these reports that we can determine if we have a breeding population of these stink bugs in Iowa and where they are located.

Submitting insect samples
For information on submitting a sample to The ISU PIDC has instructions for submitting insect samples to the clinic and an information page on the brown marmorated stink bug

General Biology
The brown marmorated stink bug (BMSB) is an invasive insect that was recently discovered in North America. It was first identified in fall 2001 in Allentown, PA; though it is suspected it was on the east coast as far back as 1996. It was accidentally introduced, probably via shipping containers from Asia (no one brought it here on purpose).

BMSB spends the winter in the adult stage hiding in houses and other protected locations. In May the adults leave the hiding sites to feed on sap from plants. After mating, the females lay eggs in clusters of about 28 eggs on the undersides of leaves from June to August. A single female can lay up to 400 eggs. Eggs hatch into wingless immature bugs called nymphs that feed and grow for about five weeks before reaching the adult stage in late summer. We don’t know how many generations per year are likely to occur in Iowa.



Laura Jesse is an entomologist with the Iowa State University Extension Plant and Insect Diagnostic Clinic; contact at or by phone 515-294-5374. Erin Hodgson is an assistant professor of entomology with extension and research responsibilities; contact at or phone 515-294-2847.

This article was published originally on 3/7/2011 The information contained within the article may or may not be up to date depending on when you are accessing the information.

Links to this material are strongly encouraged. This article may be republished without further permission if it is published as written and includes credit to the author, Integrated Crop Management News and Iowa State University Extension. Prior permission from the author is required if this article is republished in any other manner.