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


Cases of Powdery Mildew Still Popping Up in OK Wheat Fields, With New Reports of Rust, Septoria

Thu, 26 Apr 2018 10:04:06 CDT

Cases of Powdery Mildew Still Popping Up in OK Wheat Fields, With New Reports of Rust, Septoria Today, Dr. Bob Hunger, Extension Wheat Pathologist for the Department of Entomology & Plant Pathology at Oklahoma State University published his latest report on the condition of wheat disease that he has been monitoring this season. You can review that report, below.


"Although reports of powdery mildew continue to come in from around the state, perhaps the more important news is that other foliar diseases have started to become active. On Apr-24, Septoria tritici blotch (pictured) was prevalent on lower leaves throughout the variety trial near Walters, OK. Walters is located in southwestern Oklahoma about 20 miles south of Lawton & 10 miles north of the Texas border. Although interesting, Septoria tritici blotch is not the disease of concern as in this trial there also was active leaf rust on lower leaves and stripe rust on the leaves just below the flag leaf. Dr. Brett Carver (OSU Professor/Wheat Breeder) and Branden Watson (OSU PaSS Graduate Student) also reported active stripe rust at various levels in trials located near Chickasha, OK in central Oklahoma. The report from Dr. Carver indicates much more severe stripe rust than was seen near Walters. These observations indicate that both stripe and leaf rust are increasing through southern and central Oklahoma. This activity will increase through the coming weeks as the forecast indicates continued moisture (rains and dew) coupled with moderate temperature. Wheat in southern Oklahoma was approaching or was actively flowering, so the option of using a fungicide to protect yield potential either is at hand or may be too late. Typically foliar fungicides should be applied for wheat rust control between flag leaf emergence and complete head emergence (Feekes’ growth stages 8 to 10.5). Some fungicides (e.g., Aproach, Headline, Nexicor, Priaxor, and Twinline) are so labeled. However, some fungicides (Tilt, Quilt Xcel, and Trivapro) are labeled for a later application (Feekes 10.5.4, which is the end of flowering with the kernel watery ripe). Many others no longer have a growth stage deadline, but rather are limited by a pre-harvest restriction. That is, there must be a certain number of days that elapse between application and harvest. For some fungicides (Caramba, Folicur, Proline 480, and Prosaro) this is 30 days. For Absolute Maxx, it is 35 days, and for Aproach Prima, it is 45 days. For some fungicides it is a combination of growth stage and days between application and harvest. For specific information, please consult the label for the fungicide. Additional information related to foliar fungicides also can be found in OSU Current Reports 7668, Foliar Fungicides and Wheat Production in Oklahoma, which is available here."



Photo Caption: Septoria leaf blotch on lower wheat leaf in the variety trial near Walters, OK.



   
     



 

WebReadyTM Powered by WireReady® NSI

 


Top Agricultural News

  • Range Conditions in the Plains Continue to Improve this Week as Corn, Soybeans Race to Maturity  Mon, 20 Aug 2018 17:12:07 CDT
  • R-CALF Petitioners Submit Comments to USDA with Proposed Option for Properly Labeling USA Beef  Mon, 20 Aug 2018 16:09:01 CDT
  • OSU’s Kim Anderson Suggests US Poised to Recapture Lost Share in the Global Wheat Market  Mon, 20 Aug 2018 15:59:47 CDT
  • Salughter Cows Sell 1.00 to 3.00 Higher, Bulls Mostly Steady to 2.00 Higher on Monday at OKC West  Mon, 20 Aug 2018 15:48:30 CDT
  • Oklahoma Grain Elevator Cash Bids as of 2:00 p.m. Monday, August 20, 2018  Mon, 20 Aug 2018 14:52:44 CDT
  • Monday Market Wrap-Up with Justin Lewis  Mon, 20 Aug 2018 14:33:52 CDT
  • Monday Afternoon Market Wrap-Up with Carson Horn   Mon, 20 Aug 2018 14:11:22 CDT
  • Four Drought-Stricken Counties in Oklahoma Qualify for USDA Assistance as Primary Disaster Areas  Mon, 20 Aug 2018 11:27:30 CDT

  • More Headlines...

       

    Ron salutes our daily email sponsors!

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

    Search OklahomaFarmReport.com

    Find more about Weather in Oklahoma City, OK

       
       
    © 2008-2018 Oklahoma Farm Report
    Email Ron   |   Newsletter Signup   |    Current Spots   |    Program Links

    WebReady powered by WireReady® Inc.