Slug Feeding Injury Rampant For Growers

Growers should take extra precaution to scout their fields this spring for slugs as the near-record warm winter has caused these plant feeders to have attacked earlier than normal and reach a size that causes noticeable feeding injury much sooner than normal, an Ohio State University Extension entomologist said.

In fact, growers throughout the Corn Belt have reported finding slugs in their fields causing such significant feeding injury that it requires treatment with baits.

“These reports are two to four weeks early compared with most years and is a result of the warmer winter and March,” said Ron Hammond, who also has an appointment with the Ohio Agricultural Research and Development Center. “The warmer weather and soil temperatures have caused slugs to hatch earlier and are resulting in slugs beginning their heavier feeding earlier.”

Winter 2012 was the warmest winter experienced nationwide since 2000 and the fourth-warmest winter on record, according to the National Oceanic and Atmospheric Administration. This was caused because the jet stream, which divides the cold air to the north from the warm air to the south, settled at a much higher latitude this year, the federal agency said.

This means that if planting times are normal, slugs will be a bigger and larger threat than normal, Hammond said.

“For growers who have experienced slug issues in the past, it is critical that fields be scouted now,” he said.

Hammond said that while the impact is significant for both corn and soybean growers, there are some differences in what farmers should be looking for and planning.

“With corn’s growing point being below the soil for a few weeks, most of the feeding above ground will be to growing leaves that will be replaced, and not on the growing tip that would kill the plant,” he said. “Because of continued growth of corn that will probably occur, there is some leeway in terms of the time required to make the treatment if needed.”

But, Hammond cautioned, growers should keep in mind that corn is still relatively much smaller than when feeding would normally occur and so presents a much more serious situation.

For soybean growers, the growing point of soybeans is between the cotyledons as they emerge from the soil, he said.

“Thus, the slug is easily able to reach and feed on both the cotyledons along with that growing point, making it much easier for slugs to kill the soybean plant as it emerges from the soil,” Hammond said. “This fact makes immediate treatment of soybeans perhaps more critical if no leaves have yet emerged and expanded.”

Growers should look for telltale signs of leaf feeding if their plants have emerged and have leaves, he said.

“But for soybeans not yet or just now emerging, or yet to be planted, care should be taken to determine if slugs are present and lying in wait,” Hammond said. “This latter situation could require a bait application just prior to emergence.

“Use your own past experiences with soybean stand reductions caused by slugs to determine whether an early treatment should be made this year.”

Growers can use one of two available baits that contain metaldehyde (Deadline MPs and others), and those with iron phosphate (Sluggo), he said.

More information can be found on OSU Extension’s slug fact sheet here.

“If they’ve had problems before and those soybeans are starting to emerge and slugs are there, they need to treat immediately,” Hammond said.

Leave a Reply

Insecticides Stories

Dow AgroSciences
InsecticidesRenewed Registration Issued For Products Containing Sulfoxaflor
October 17, 2016
On October 14, 2016, the U.S. EPA re-established the registration of products containing sulfoxaflor (Isoclast Active), including Transform WG, Closer Read More
Soybean Field
InsecticidesDiflumax 2L Insect Growth Regulator Receives EPA Section 3 Registration
September 8, 2016
HELM AGRO US, Inc. has announced the EPA Section 3 registration of its new Diflumax 2L Insecticide/Miticide. Containing the active Read More
Soybean Field
InsecticidesZeal SC Miticide Now Registered For Soybeans
August 9, 2016
Valent U.S.A. Corp. has announced the EPA registration of Zeal SC Miticide for soybeans. Zeal is a proven residual miticide Read More
Syngenta plant
InsecticidesGrowers, Distributors May Use Remaining Stocks Of Belt Insecticide
August 1, 2016
The U.S. EPA’s Environmental Appeals Board (EAB) has upheld an earlier EPA decision to cancel registration for Bayer’s insecticide flubendiamide, Read More
Trending Articles
AGCO RG700 cab
OpinionRoadblocks To Precision Ag Innovation
October 5, 2016
On August 29, I got to preside over the PrecisionAg Innovation Series event, “Game-Changing Advances in Precision Farming Technology,” developed Read More
J.C. Ramsdell containment system
EquipmentClear Opportunity In The Tank Market
October 4, 2016
Crop prices may be down, but steel prices are too — and that’s good news for retailers looking to add some Read More
WinField booth Farm Progress
Special ReportsTalking Weed Management Strategies At Farm Progress 2016
October 2, 2016
The annual Farm Progress Show — this year staged in Boone, IA — is always a great place to catch Read More
Corn Field
Eric SfiligojFacing Ag Industry Challenges
September 26, 2016
At the 2016 annual Mid America CropLife Association (MACA) meeting in September, a pair of crop protection company representatives discussed Read More
Bayer Monsanto
Crop InputsBayer-Monsanto Mega-Merger: 6 Things You Need To Know
September 14, 2016
Mega mergers have become almost routine in the agricultural industry. Right on the heels of Monday’s news that fertilizer giants Potash Read More
Potash Corp Agrium
Crop InputsAgrium, Potash Corp To Merge To Create $36 Billion Company
September 12, 2016
Canada’s Agrium Inc. and Potash Corp of Saskatchewan Inc. have agreed to combine in a deal that would create a Read More
Latest News
ManagementThe Latest Dow-DuPont Rumor, Product of the Year Voting…
October 20, 2016
CropLife Editor Eric Sfiligoj shares a new rumor about the Dow-DuPont merger and updates on two CropLife-driven programs, the CropLife Read More
Soybean Closeup
FungicidesFMC Begins Registration Process For New Fungicide Activ…
October 19, 2016
FMC Agricultural Solutions has begun the joint U.S. EPA and Canadian Pest Management Regulatory Agency registration process for bixafen, a new Read More
Soil Young Corn
Industry NewsAgribusiness Search Firm Appoints New Managing Partner
October 18, 2016
Morris Bixby Group, a leading agribusiness search firm providing the highest quality professional recruiting and career advancement services since 2000, Read More
Wheat Field North Dakota
FertilizerUnited Suppliers Acquires Kansas Fertilizer Business
October 17, 2016
United Suppliers, Inc. has purchased the assets of Evans Enterprises, LLC, an ammonium chloride fertilizer business based in Olathe, KS. Read More
Corn Field
Industry NewsFMC Launches New Operations In Argentina, Exits Joint V…
October 17, 2016
FMC Corp. has exited its joint venture with Ruralco Soluciones S.A. FMC has launched new commercial operations, FMC Quimica S.A., Read More
Dow AgroSciences
InsecticidesRenewed Registration Issued For Products Containing Sul…
October 17, 2016
On October 14, 2016, the U.S. EPA re-established the registration of products containing sulfoxaflor (Isoclast Active), including Transform WG, Closer Read More
Eric SfiligojThe Whys Of Agriculture
October 17, 2016
During 2016, there have been myriad challenges facing the whole agricultural industry. Such wide ranging issues as water protection, sustainable Read More
Young Corn Field
FertilizerImproved Phosphorus Management Essential To Feeding Wor…
October 14, 2016
With a global population expected to reach 9 billion people by 2050, improved management of key essential nutrients such as Read More
ManagementHarvest and Crop Price Updates; EPA and Crop Protection…
October 13, 2016
Glyphosate and atrazine get public comment support from ARA as each is reviewed by EPA, and the latest on the Read More
Matt Hopkins15 Twitter Accounts Every Ag Professional Must Follow
October 13, 2016
What do singer Katy Perry and the President of the United States have in common? They are two of the Read More
Corn Field
Industry NewsArysta LifeScience Adds Two Key Account Managers
October 13, 2016
Arysta LifeScience North America recently announced the addition of two key account managers: Doug Hoberty and Rob Wier. Hoberty and Read More
EquipmentDeere Announces Development Deal with Scherer Design
October 12, 2016
Deere & Co. announces a joint development agreement with Scherer Design Engineering, Inc. to develop and commercialize kernel processing solutions Read More
Crop InputsMarrone Bio Innovations Celebrates 10 Years Of Innovati…
October 12, 2016
Richard Rominger, former Deputy Secretary of the USDA and former agricultural secretary of California, emceed a 10th anniversary luncheon celebration on Read More
Photo credit: The United Soybean Board/The Soybean Checkoff.
Industry NewsVive Crop Protection Closes Financing To Support Corpor…
October 11, 2016
Vive Crop Protection has announced the closing of growth financing to support 2017 commercial expansion. The financing was led by Read More
SoftwareHD Precision Analytics Launches New Mobile App For Agri…
October 11, 2016
AGSentry from HD Precision Analytics is a Software-as-a-Service (SaaS) platform that offers simple data service and actionable analytics tool. It focuses Read More
HerbicidesWeed Control And Soil Health Go Hand-in-Hand
October 10, 2016
Although many landowners may not give much thought to weed control as a soil health measure, Gared Shaffer, South Dakota Read More
Students Soybean Field
Eric Sfiligoj2016 Young Leaders Speak
October 10, 2016
One of the consistent cries in agriculture today is the need to try and connect with the younger generations, attempting Read More
ManagementVision Conference Preview, Monsanto Earnings, and Produ…
October 7, 2016
Editors Paul Schrimpf and Eric Sfiligoj talk about the upcoming PrecisionAg Vision meeting in Arizona, Monsanto’s latest revenue numbers, and Read More