Oklahoma Farm Report masthead graphic with wheat on the left and cattle on the right.
Howdy Neighbors!
Ron Hays, Director of Farm and Ranch Programming, Radio Oklahoma Ag Network  |  2401 Exchange Ave, Suite F, Oklahoma City, Ok 73108  |  (405) 601-9211

advertisements
   
   
   
   
   
    
   
   
   
   
   

Agricultural News


Dr. Royer Recommends Farmers Watch for Army Worms in Wheat

Fri, 22 May 2015 11:56:43 CDT

Dr. Royer Recommends Farmers Watch for Army Worms in Wheat Oklahoma State University Extension Entomologist Dr. Tom Royer has written a blog about armyworms in wheat.


We have a late-maturing wheat crop that finally received some needed rain.   I received a report of armyworms infesting wheat in the Vernon, Texas area. Armyworm infestations typically occur in late April through the first two weeks of May, but the cooler spring we are experiencing this year may have delayed their development.


Armyworm infestations occur more frequently around waterways, areas of lush growth, or areas with lodged plants. These areas should be checked first to determine the size of the infestation.


Early signs of an infestation include leaves with ragged margins that have been chewed. You may find “frass” i.e. the excrement from armyworm caterpillars, around the base of wheat stems. They also tend to clip heads from developing wheat plants. The head clipping I have noticed over the years us usually restricted to secondary tillers with very small, green heads that would not likely contribute much to yield.


Scout for armyworms, at 5 or more locations looking for “curled up worms”. Armyworm caterpillars tend to feed at night, so a good strategy is to bring a flashlight and look at fields after dusk when they are feeding up on the plant stems. The suggested treatment threshold for armyworms is 4-5 unparasitized caterpillars per linear foot of row.


Armyworms have a number of natural enemies that help keep populations in check, if given a chance. In particular, parasitic wasps and flies attack them. If you find small white cocoons littered on the ground that are about ¾ the size of a cue tip, the natural enemies have already taken care of the problem.


If wheat is past the soft dough stage, control is not warranted unless obvious head clipping can be seen and caterpillars are still present and feeding. Worms feeding on the awns when plants are past soft dough will not cause enough yield loss to justify the expense of an insecticide application that is solely intended for armyworm control. When choosing to spray, keep in mind that some insecticides require a 30 day waiting period for harvest.


Consult CR-7194 Management of Insect and Mite Pests of Small Grains for information on insecticides registered for control of armyworms. Click here for the PDF.


For more information on this topic, contact Tom A. Royer, Extension Entomologist at tom.royer@okstate.edu

   

 

WebReadyTM Powered by WireReady® NSI

 


Top Agricultural News

  • US Beef Cattle Industry Tells Secretary Sonny Perdue- Help Our Producers NOW  Sun, 29 Mar 2020 11:09:52 CDT
  • USDA Secretary Perdue Believes the CARES Act Provides Much Needed Relief for Farmers and Ranchers  Sun, 29 Mar 2020 09:40:37 CDT
  • District Court Affirms State Beef Councils Are a Legal Part of the Beef Checkoff- Dismisses Litigation Brought by R-Calf USA  Fri, 27 Mar 2020 22:44:36 CDT
  • Friday, March 27, 2020 Market Wrap-Up with Justin Lewis  Fri, 27 Mar 2020 15:18:59 CDT
  • Oklahoma Grain Elevator Cash Bids as of 2:00 p.m. Friday, March 27, 2020  Fri, 27 Mar 2020 15:15:49 CDT
  • Agriculture Retailers Association Commends Congress on CARES Act Passage  Fri, 27 Mar 2020 13:57:47 CDT
  • Lucas Applauds House Passage of Support For America’s Families, Workers, and Businesses  Fri, 27 Mar 2020 13:54:47 CDT
  • State Department Clears the Way for Agriculture Workforce   Fri, 27 Mar 2020 11:18:24 CDT

  • More Headlines...

       

    Ron salutes our daily email sponsors!

    Oklahoma City Farm Show KIS FUTURES, INC. Oklahoma Ag Credit Oklahoma Farm Bureau National Livestock Credit Ag Mediation Program P&K Equipment AFR Insurance Stillwater Milling Oklahoma Cattlemen's Association

    Our Road to Rural Prosperity sponsors!

    Banc First OPSRC ORWA TPAOO TPAOO

    Search OklahomaFarmReport.com


       
       
    © 2008-2020 Oklahoma Farm Report
    Email Ron   |   Newsletter Signup   |    Current Spots   |    Program Links

    WebReady powered by WireReady® Inc.