|April 2, 2004
I have looked at several fields and submitted plant samples that have had problems with leaf rust. Information on the leaf, stem and stripe rust problems was discussed in the March 1, 2004 newsletter.
Several wheat diseases are being discussed by producers. Some of the better web sites for increasing your knowledge on the subject include:
I am trying to get an idea of how many small grain samples we will be thrashing this year, if you have a test plot that has survived and plan to harvest samples and thrash them at the research center in San Angelo, drop me an e-mail and let me know. THANKS!
- American Wheat Striate Mosaic Virus-- Kansas State University
- Barley Yellow Dwarf Virus-- Kansas State University, Iowa State, TAMU, University of Nebraska
- Cephalosporium Stripe-- Washington State
- Common Root Rot-- TAMU,
- Common Smut-- Washington State
- Dryland Foot Rot-- TAMU, Washington State
- Ergot-- Washington State
- Glume Blotch Complex-- Kansas State University, TAMU
- High Plains Mosaic Pathogen-- Kansas State University
- Karnal bunt
- Leaf Blotch-- TAMU
- Leaf Rust-- Kansas State University, Iowa State, TAMU, University of Nebraska, Washington State
- Loose Smut-- TAMU, Washington State
- Powdery Mildew-- Kansas State University, TAMU, Washington State
- Rhizoctonia Root Rot-- TAMU
- Scab (Fusarium Head Blight)-- Kansas State University, University of Nebraska
- Septoria Leaf and Glume Blotch-- University of Nebraska, Washington State
- Soil-Borne Wheat Mosaic-- University of Nebraska, TAMU
- Speckled Leaf Blotch (Septoria tritici)-- Kansas State University
- Stem Rust-- Kansas State University, TAMU, University of Nebraska
- Stinking Smut or Bunt-- TAMU
- Strawbreaker (foot rot)-- Kansas State University
- Stripe Rust-- Kansas State University, TAMU, University of Nebraska, Washington State
- Take-all Root Rot-- Kansas State University, TAMU
- Tan Spot-- Kansas State University, TAMU, University of Nebraska
- Spindle Streak Mosaic Virus-- Kansas State University
- Wheat Streak Mosaic Virus-- Kansas State University, TAMU, University of Nebraska Washington State
- Wheat Soilborne Mosaic Virus-- Kansas State University
The main fungicides used for small grain diseases include Headline, Quadris, Quilt, Stratego, and Tilt. You can review the label for each product at the CDMS web site (http://www.cdms.net/manuf/manuf.asp). For a listing of disease and insect ratings for most wheat varieties please review the information from the San Angelo web site or Kansas State University.
For those producers with thin stands of wheat intending to plant into residue, an application of Glyphosate (12 to 24 ounces) does a good job. Contact herbicides can be used, however, producers need to increase the gallons of water applied per acre to get complete coverage of the wheat and weeds.
Cottonseed for variety tests have been ordered. Linked is a listing of the tests to be conducted in Districts 6 & 7.
A number of producers have indicated that they planned to plant early this year. Remind them that the minimum soil temperature for planting cotton is a 10 day average of 600 F at an eight inch soil depth (take temperature at 8:00 a.m.). When soil temperatures are 65 to 700 F the cottonseed germinates and emerges quicker which helps to reduce the amount of time emerging seedlings are exposed to soil diseases. If cotton is planted at the minimum soil temperature and then watered, you will probably have a reduction in the final plant stand and health of the crop.
Pesticide Recertification Training
On Monday, April 12, there will be a training conducted at Abilene for producers needing to obtain a Private Applicators License. For more details and to register for the meeting call Gary Bomar at (325) 672-6048.
Weed ID Web Sites
A number of people have been asking about weed identification sites. A good reference is linked here. These are listed on the Texas Weed Information Group web site (http://twig.tamu.edu).
- April 1, Burnet County, Soil and Soil Fertility
- April 2, Runnels County, Regional Ag Day
- April 3, Tom Green County, Christmas in April
- April 5, District 7 Headquarters, Office Conference
- April 15, Brazos County, Soil and Crop Sciences Departmental Awards Program
- April 16, Annual Leave
- April 16 - 18, Brazos County, Parents Weekend at Texas A&M
- April 27 & 28, Brown County, Professional Board Meeting
- April 29, Tom Green County, Natural Resources Field Day
- May 3, District 7 Headquarters, Office Conference
- May 6, Concho/McCulloch Co., Wheat Tour
- May 7, Taylor/Callahan Co., Wheat Tour
- May 10, Brown County, Ag and Natural Resources Day
- May 14, Coleman County, Wheat Tour
- May 21, Tom Green County, Professional Ag Workers
- May 19 - 21, District 7 TCAAA Meeting
- May 26 - June 1, Annual Leave
Billy E. Warrick
Texas Cooperative Extension
Texas A&M University System