Oklahoma Farm Report masthead graphic with wheat on the left and cattle on the right.
Howdy Neighbors!
Ron Hays, Director of Farm Programming Radio Oklahoma Network  |  7401 N. Kelley Ave. Oklahoma City, OK 73111  |  (405) 841-3675  |  Fax: (405) 841-3674

advertisements
   
   
   
   
   
   
   
   

Agricultural News


Jeff Edwards Discusses Management Practices for Lodged Wheat

Fri, 06 Apr 2012 14:18:13 CDT

Jeff Edwards Discusses Management Practices for Lodged Wheat


Recent storms have resulted in lodged wheat around the state of Oklahoma. In this article Small Grains Extension Specialist Dr. Jeff Edwards provides a few pointers on determining yield potential and management of downed wheat. He also addresses questions about physiological leaf speckling.

Lodged wheat
I have been getting several call and emails about lodged wheat. Wheat can lodge for several reasons including disease, insects, freeze injury, and excess fertility. Most of the lodging that has occurred this year is due to our warm winter combined with ample residual soil fertility caused by failed crops in 2011. The crop is thick with 3 - 4 times the normal number of tillers and is more susceptible to lodging from wind and/or pounding rain.

Will the lodged crop stand back up?
Maybe. It depends on the severity of the lodging. Wheat that is completely flat on the ground with a broken stem will generally not recover. The plant will attempt to go ahead and fill grain, but will not be very successful. Wheat that is partially lodged prior to grain fill will generally make an attempt to “straighten up” and make some grain. There will be a yield penalty, but the crop will generally still make grain in the tillers that stand back up. Wheat that is simply leaning will still have full yield potential.

Should I spray a fungicide on lodged wheat?
This is a tough one. I would not spray fungicide because the wheat is lodged. It is true that the mat of lodged foliage might be more conducive to disease; however, if wheat is lodged this severely, light penetration into the canopy for photosynthesis, and not disease, will be the primary yield-limiting factor. If I had already made plans to apply a fungicide and the wheat lodged prior to making the application, I would use the information in the previous paragraph to help determine my remaining yield potential and make the fungicide call based on yield potential at the time of application. Fungicides will not help the wheat “stand back up”.

Physiological leaf speckling
I have gotten a few questions on yellow spotting on wheat leaves. If you find active rust pustules on leaves, it could be part of the plant reaction to leaf or stripe rust. In many cases, however, it is what is termed “physiological leaf speckling” (also called physiological leaf flecking or spotting). We have experienced this off and on with the varieties Doans and Duster and the speckling was severe in 2007. Jagger, Fuller, and the new OSU variety Gallagher are also showing some physiological leaf speckling this year.

Unfortunately, this is a phenomenon that is not well understood. What we do know is: it is not disease related so fungicides should not affect the severity and although it looks similar to chloride deficiency, in most cases it is not. The things we don’t have a good handle on include: how much, if any, it will affect yield and what set of environmental conditions are conducive to the onset of physiological leaf speckling.



   

 

WebReadyTM Powered by WireReady® NSI

 


Top Agricultural News

  • Monsanto Working to Eliminate 100 Million Metric Tons of Greenhouse Gas Emissions From U.S. Ag  Tue, 30 Aug 2016 17:18:08 CDT
  • Feedyard Manager Insists Good Health and Quality Genetics Go Hand in Hand  Tue, 30 Aug 2016 17:00:14 CDT
  • Tuesday Market Wrap-Up with Justin Lewis  Tue, 30 Aug 2016 15:09:54 CDT
  • Oklahoma Grain Elevator Cash Bids as of 2:00 p.m. Tuesday, August 30, 2016  Tue, 30 Aug 2016 14:55:11 CDT
  • Tuesday Afternoon Market Wrap-Up with Carson Horn  Tue, 30 Aug 2016 14:23:03 CDT
  • Case IH's New Tagline "Rethink Productivity" Says It All With Unveiling of Autonomous Tractor  Tue, 30 Aug 2016 14:18:33 CDT
  • DEKALB DiseaseShield Products to Debut This Growing Season Leading Industry In Corn Defense  Tue, 30 Aug 2016 12:49:17 CDT
  • US Farmers & Ranchers Alliance Announces 2016's Faces of Farming & Ranching Finalists  Tue, 30 Aug 2016 17:25:43 CDT

  • More Headlines...

       

    Ron salutes our daily email sponsors!

    Oklahoma Ag Credit Oklahoma Genetics Inc. Oklahoma Farm Bureau National Livestock Credit P&K Equipment Tulsa Farm Show Stillwater Milling American Farmers & Ranchers KIS FUTURES, INC. Oklahoma Cattlemen's Association

    Search OklahomaFarmReport.com


       
       
    © 2008-2016 Oklahoma Farm Report
    Email Ron   |   Newsletter Signup

    WebReady powered by WireReady® NSI