Iowa State University Extension and Outreach

East-Central and Southeast Iowa Crop Information


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August 20, 2007

August 20, 2007 (updated August 23, 2007)




Ear Twinning

Text Box:  
Picture from the University of Illinois Pest Management and Crop Development
Bulletin, August 10, 2007 issue

Over the last two weeks I have received several calls about multiple ears on corn plants and I have visited some of these fields.  Often there are 2 – 7 ears at one node and sometimes there are multiple ears at several nodes. 


This is a phenomenon called “twinning” that was observed from Ohio to Iowa in 2006 and is showing up in these states again in 2007.  Several articles have been written about it.


Iowa State University:


University of Illinois:


University of Illinois:




The Ohio State Univeristy:



Asian Soybean Rust First Detector Training – August 22

9:30 a.m. – 3:30 p.m.



Individuals who have not gone through the Asian Soybean Rust First Detector training or First Detectors who would like a refresher should plan to attend one of the trainings during the week of August 20.  The closest trainings are the ones in Muscatine on August 22 at the Muscatine Island Research and Demonstration Farm at Fruitland  Details are at


Soybean Cyst Nematode and

Soybean Sudden Death Syndrome -

August 28, 2007

5:30 p.m.

Nichols Agriservice Plots, Highway 22E, Lone Tree


In cooperation with Nichols Agriservice, Iowa State University is sponsoring a field day focusing on Soybean Cyst Nematodes (SCN), various sources of soybean resistance to SCN, and Soybean Sudden Death Syndrome.  The featured speaker will be Dr. Greg Tylka, Extension Nematologist with Iowa State University.  Tylka’s presentation will be followed by a tour of the plots, conducted by Nichols Agriservice, and a meal, compliments of Nichols Agriservice.



Grain Marketing and Farm Lease Agreements

September 5

10:00 a.m.

Sweetland Ag Tech Plots, Highway 61N, Muscatine


In cooperation with Sweetland Ag Tech, Iowa State University is sponsoring a field day focusing on rental agreements and marketing strategies.  The field day will begin at 10:00 a.m. with the featured speakers, Dr. Mike Duffy, discussing farm rental agreements, and Jim Jensen, discussing marketing as we enter harvest.  Both Duffy and Jensen are Extension Farm Management Specialists with Iowa State University.  Following the presentations by Duffy and Jensen, Troy Schlapkohl of Sweetland Ag Tech will discuss soil fertility issues for 2008. Diann Roos, Sweetland Ag Tech, will then conduct a tour of the Sweetland Ag Tech plots.  Sweetland Ag tech will serve a complimentary lunch at noon.


Fall Field Day SE Iowa Research Farm  - Crawfordsville

September 6, 2007 - 1:30 p.m.

Topics will include grain storage issues, grain marketing, low linolenic soybeans and other alternative crop opportunities, and managing extended diapause northern corn rootworms.  Watch




If you have any questions, please feel free to contact the Iowa State University Extension Office.
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Last Update: August 20, 2007
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