We will have a special crop school on “Grain Sorghum and Summer Annual Forages” on Friday, March 30 at the Inman Community Building starting at 10:30 a.m.
Topics will include weed control, production practices, variety types, insect control, tonnage and forage utilization.
K-State agronomists Kraig Roozeboom, Stu Duncan, Curtis Thompson and Todd White along with CropQuest agronomist Rod Summervill will lead the discussion.
Lunch will be provided by Knackies. Registration cost is $10 for lunch and materials. Call 620-241-1523 or e-mail email@example.com to sign up.
Wheat disease update
So far, we have seen minimal disease pressure on wheat. We can find a little septoria, or speckled leaf blotch, on lower leaves, however, this is not a concern at this point in time.
We have reports of some leaf rust starting to show up in Texas and some stripe rust showing up in Oklahoma and Arkansas. Growers should be scouting their wheat weekly to see if either of these diseases are getting started.
Tan spot is another disease that might increase, especially in fields with higher residue levels from previous wheat crops.
Applying fungicides is a decision that must be made on a case-by-case basis.
Remember, fungicides are not systemic. They do not move throughout the plant system, and only protect that part of the leaf where the product lands. Therefore, any new leaves that emerge after a fungicide application have no protection from the fungicide.
The flag leaf is the most important part of the plant to protect. Once the flag leaf is out, we would seriously consider a fungicide application beneficial if rusts are active.
Earlier applications also can be beneficial depending up the severity of the disease.
However, earlier applications usually require a second application at flag leaf emergence time.
For color pictures of the various diseases of wheat, simply go to our K-State Research and Extension website at www.ksre.ksu.edu and select “Publications” in the left hand column. In the search box, type S-84. That will get you a publication “Diagnosing Wheat Production Problems in Kansas.”
Varieties that are most susceptible to leaf rust are going to be Jagger, Overly, Fuller, Post Rock, and most other older varieties. Art probably will have the most resistance and should be the last to need a fungicide application for leaf rust. Armour and Everest have shown decent resistance in the past, but we need to still scout them as their resistance may be breaking down.
Early application of weevil insecticides seems to be the most successful management strategy to protect the first cutting. We are starting to see some weevil activity already.
When we find about one weevil per two stems, control is justified. Most recommended insecticides are equally effective. We really do not have a favorite. Good coverage and proper timing are more important factors than which product you use.
Page 2 of 2 - Local horticulture website popular
We have noticed a lot of traffic on our local horticulture website, which was recently created by the Master Gardeners and Friends. It has lots of valuable information on gardening, lawns, trees, flowers and landscaping plus it keeps you up to date on local horticulture activities..
Go to www.mcphersonmastergardeners.com and bookmark it as a favorite. You will find links to very helpful websites under the “Learn & Grow” tab. There is a photo gallery. Also, there is information about the Master Gardener program and its history.
Check it out.
Dale Ladd is the agriculture extension agent for the McPherson County K-State Extension Service office. He can be reached by calling 241-1523.