Corn Rootworm Protection: 4 Considerations For 2012

University of Illinois Extension entomologist Mike Gray says severe root damage has been confirmed in Bt corn in northwestern Illinois which follows a similar discovery in Iowa. Here is an excerpt from his observations:

“On August 16, I traveled to Henry and Whiteside counties in northwestern Illinois, responding to a request to verify severe corn rootworm pruning on some Bt hybrids that express the Cry3Bb1 protein. The fields have been in continuous corn production for many years, and the producers have relied on Bt hybrids that express the Cry3Bb1 protein as their primary protection against western corn rootworm injury. Lodged plants were common in many areas of the fields, and western corn rootworm adults were numerous and easy to collect. It was also easy to find plants with two to three nodes of roots completely destroyed. A shovel was not required for removing the plants from the soil.

Unfortunately, yield losses will be significant in these fields…In issue 18 of the Bulletin (August 5), I reported that field-evolved resistance by western corn rootworm to the Cry3Bb1 protein has been confirmed by Dr. Aaron Gassmann of Iowa State University. He collected resistant western corn rootworm adults from continuous cornfields in northeastern Iowa where significant root damage had occurred in producers’ fields. The Iowa fields had been planted with Bt hybrids expressing the Cry3Bb1 protein. The situations in Iowa and Illinois share some common features. Adults were collected from the Illinois fields in question and will be further evaluated for potential resistance.”

In light of the developments in Iowa and northwestern Illinois, Gray urges great caution in choosing hybrids offering corn rootworm protection when making seed selections for 2012. He says growers and retailers who have encountered less-than-satisfactory root protection this season with their Bt hybrid, consider the following alternatives for 2011:

  1. Rotation to soybeans or another nonhost crop.
  2. A corn rootworm soil insecticide at planting.
  3. A Bt hybrid expressing a different corn rootworm Cry protein than one that may have performed poorly in your fields in 2011.
  4. A pyramided Bt hybrid that expresses multiple Cry proteins targeted against corn rootworms.

“Most important, though, for effective corn rootworm management is to consider a long-term, integrated approach that includes multiple tactics, such as adult suppression programs, use of soil insecticides at planting, rotation of Bt hybrids that express different Cry proteins, and rotation to nonhost crops,” Gray said. “Many producers have relied on a single tactic for too many years, and unfortunate consequences are beginning to emerge.”

(Source: The Bulletin, University of Illinois Extension)

Leave a Reply

Seed/Biotech Stories

Crop InputsMonsanto: EU Approves Roundup Ready 2 Xtend Imports
July 22, 2016
Monsanto Co. announced today that the European Commission has granted import approval for Roundup Ready 2 Xtend soybeans. This milestone Read More
Syngenta headquarters in Basel, Switzerland
Crop InputsSyngenta Announces Alfalfa Seed Split Off
July 22, 2016
On September 1, 2016, Syngenta will transfer sales and distribution of alfalfa seed to the NEXGROW branded business that is Read More
Monsanto Luling Plant
Crop InputsReport: Bayer Shareholder Proposes Monsanto ‘Hostile Takeover’
July 20, 2016
One of Bayer AG’s top 20 shareholders said Wednesday it may make sense for the life-science company to launch an Read More
Corn Field
Seed/BiotechWhat Can Inoculants Do For You?
July 13, 2016
When it comes to preventing disease and promoting growth in your plants, who couldn’t use a helping hand? By forming Read More
Trending Articles
Heritage Cooperative
Retail FacilitiesKahler Automation Designs State-Of-The-Art Facility For Heritage Cooperative
July 4, 2016
Heritage Cooperative in Marysville, OH, needed an efficient liquid, dry and grain facility to serve the many needs of their Read More
The Andersons Waterloo
ManagementFirst Indiana Facility Certified Under 4R Nutrient Stewardship Certification Program
June 27, 2016
The 4R Nutrient Stewardship Certification Program has announced that The Andersons, Inc.’s Waterloo, IN, facility has been added to its Read More
Food IT
Industry NewsCalifornia Event Will Mix Ag And Tech Professionals To Explore IT Solutions
June 20, 2016
Silicon Valley is hot on agriculture, and an upcoming event in California will bring together the food and tech industries Read More
Monsanto Luling Plant
Eric SfiligojWhat’s Next For Monsanto?
May 31, 2016
For the folks at Monsanto’s headquarters in St. Louis, MO, it has been an eventful few weeks. Back on May Read More
Soybean Plant closeup
Industry NewsMonsanto Rejects Bayer Bid; Open To More Talks
May 25, 2016
Monsanto Co, the world’s largest seed company, turned down Bayer AG’s $62 billion acquisition bid as “incomplete and financially inadequate” Read More
Eric SfiligojPity The Monsanto Haters
May 23, 2016
An old saying goes thus: “Be careful what you wish for. You just might get it.” Given current events, there Read More
Latest News
ManagementGROWMARK Meeting Visit, Company Takeover Updates, and R…
July 22, 2016
Editors Paul Schrimpf and Eric Sfiligoj discuss their recent speaking engagement at GROWMARK’s eastern event, crop protection company merger rumors, Read More
Crop InputsMonsanto: EU Approves Roundup Ready 2 Xtend Imports
July 22, 2016
Monsanto Co. announced today that the European Commission has granted import approval for Roundup Ready 2 Xtend soybeans. This milestone Read More
Syngenta headquarters in Basel, Switzerland
Crop InputsSyngenta Announces Alfalfa Seed Split Off
July 22, 2016
On September 1, 2016, Syngenta will transfer sales and distribution of alfalfa seed to the NEXGROW branded business that is Read More
Dow DuPont
Crop InputsDuPont, Dow Shareholders Approve Merger
July 21, 2016
DuPont and The Dow Chemical Company announced that, at their respective special meetings of stockholders held today, stockholders of both Read More
ManagementLand O’Lakes Announces SUSTAIN Business Unit, Oth…
July 20, 2016
Land O’Lakes, Inc. today announced the formal organization of a new business unit, SUSTAIN, and its leadership. SUSTAIN will focus Read More
Monsanto Luling Plant
Crop InputsReport: Bayer Shareholder Proposes Monsanto ‘Host…
July 20, 2016
One of Bayer AG’s top 20 shareholders said Wednesday it may make sense for the life-science company to launch an Read More
Young Corn Closeup
Industry NewsNew Leaf Symbiotics Snags Former Monsanto Microbials Le…
July 20, 2016
NewLeaf Symbiotics, announced today the appointment of Dr. Janne Kerovuo as Vice President for Research and Discovery.  Dr. Kerovuo comes Read More
Corn and ditch
ManagementStudy: Saturated Buffers Reduce Nitrates From Subsurfac…
July 19, 2016
The Agricultural Drainage Management Coalition (ADMC), Agricultural Drainage Management Systems Task Force and Dr. Dan Jaynes with the National Laboratory Read More
Case sprayer nozzle closeup
EquipmentAgronomists, CCAs, Custom Applicators Invited To FSR Ag…
July 19, 2016
Agronomists, Certified Crop Advisers (CCA) and custom applicators can stay current on agronomy issues on the grounds of the Farm Read More
Soybean Field
LegislationOhio Soybean Association Names Brian Hill Legislator Of…
July 19, 2016
The Ohio Soybean Association (OSA) has announced that State Representative Brian Hill (R-Zanesville) has been named one of two Legislators of Read More
Eric SfiligojThe Latest Monsanto Rumors: A Game Of Tones
July 18, 2016
When companies are engaged in the back-and-forth of the acquisition game, the tone of their various announcements is always important. Read More
Nozzle spray close-up
AdjuvantsWest Central Distribution Introduces New Elite Family O…
July 14, 2016
West Central Distribution recently released a new line of Elite adjuvants to work alongside the new herbicide technologies that combat Read More
Bayer sign
Crop InputsBayer Makes New Offer For Monsanto
July 14, 2016
Bayer AG boosted its takeover offer for Monsanto Co. to about $65 billion in a bid to overcome the U.S. Read More
ManagementAn Update on Water
July 14, 2016
CropLife Editors Eric Sfiligoj and Matthew Grassi discuss agricultural water issues in conjunction with a recent field trip in Ohio. Read More
Co-Alliance employee
EmployeesNew Purdue Program To Focus On Talent Management
July 14, 2016
Purdue University’s Center for Food and Agricultural Business is starting a new professional development program to help food and agribusiness Read More
Industry NewsFMC Agricultural Solutions Appoints New Global Regulato…
July 14, 2016
FMC Corp. has named Andy Hedgecock as Global Regulatory Affairs Director for FMC Agricultural Solutions. He joins the company this Read More
Corn Field
Seed/BiotechWhat Can Inoculants Do For You?
July 13, 2016
When it comes to preventing disease and promoting growth in your plants, who couldn’t use a helping hand? By forming Read More
Microbes
Seed/BiotechMighty Farming Microbes: Companies Harness Bacteria To …
July 13, 2016
What if farmers, instead of picking up some agricultural chemicals at their local dealer, picked up a load of agricultural Read More