Armyworm Moths On The March

Armyworm moths are setting records in Kentucky, but is that reason for concern?

At the end of April, the number of armyworm moths captured in the University of Kentucky-Integrated Pest Management (UK-IPM) pheromone trap system set record levels. This could set up the potential for large enough numbers of armyworms to emerge in the weeks ahead to cause crop damage.

For the week ending April 25, capture of moths in the Princeton, KY trap increased to 600 moths per trap-week, says Doug Johnson, UK Extension entomologist. This is a larger peak than in any first generation flight since UK-IPM has been keeping records, and a substantially larger number than in the outbreak years of 2001 and 2006.

Capture in the UK-IPM traps in Lexington for the same week also drastically increased. In fact, the increase over the previous week is much larger in Lexington, from 27 to 660 moths per trap-week, than in Princeton, which was up from 322 to 600 moths per trap-week, though Princeton has the larger total number captured over time.

"It is difficult to know what this means for central Kentucky as we do not have a historic set of data," Johnson says. "We only have last year with which to compare. Certainly the current 2008 captures are much larger than the first generation in 2007."

Johnson says the high counts are no reason to overreact.

"This is an early warning, not a prediction of catastrophe," he says. "I cannot tell you if the moth flight will result in a large population of caterpillars. There are many other factors, particularly disease, predation, and parasitism that impact how well the eggs and caterpillars will survive. Nevertheless, I do think that we are at an increased risk of economically important infestations compared to most years." He recommends that the state’s growers scout their grass crops.

Armyworms, or true armyworms as this species is commonly called, occasionally occur in large enough numbers in the springtime to cause damage to corn, pastures, hay, and small grains. Armyworms generally appear in Kentucky in mid-May through June.

Leave a Reply

Latest News
Kennebec Grain terminal
CropLife 100Wheat Growers Kennebec Facility Loads First Rail Cars
October 21, 2016
In a season of firsts for Wheat Growers’ Kennebec Grain Terminal, the first 115-car unit train was loaded with soybeans Read More
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