The Enid News and Eagle, Enid, OK

Ag

April 19, 2014

Wheat tour to provide crop information

ENID, Okla. — Plans for the 2014 North Central Research Station Wheat Tour have been finalized.

The tour, at the research station one mile west of Lahoma on U.S. 412 will be May 9. Registration will begin at 8:40 a.m. Coffee and doughnuts are sponsored by Oklahoma Wheat Growers. The trailers will load at 9 a.m. for 45-minute stops at four locations.

Jeff Edwards will discuss wheat varieties. Brett Carver will provide a wheat breeding update, and Bob Hunger will cover wheat disease issues. Nitrogen top-dress methods will be covered by Brian Arnall. Canola variety selection discussion will be led by Josh Bushong. Jody Campiche will discuss 2014 farm bill commodity programs, and Kim Anderson will cover the wheat price outlook.

Crop rotation systems with be discussed by Rick Kochenower. Cover crop session will be led by Jason Warren, and Randy Taylor will speak on optimizing drill performance.

Lunch will be provided by Farm Credit of Enid for those who RSVP to (580) 237-7677 by May 6. A complete tour agenda is available at http://oces.okstate.edu/garfield. Area producers are encouraged to bring production questions to the tour.

Damage to wheat from the recent freeze will depend on growth stages and temperatures. It will take approximately seven to 10 days following a freeze to determine damage.

Wheat in north central Oklahoma ranges from just past jointing to boot. The extent of injury will depend on how cold temperatures dropped and how long temperatures remained below freezing. We can lose a few main tillers at this stage and still recover. Given our limited moisture and limited time prior to harvest, though, it is not likely we will recover from a complete loss of tillers as we have after some freezes in the past.

At jointing, the approximate injurious temperature — remaining at that temperature for at least two hours — is 24 degrees. Damage includes death of the growing point; leaf yellowing or burning; lesions, splitting or bending of the lower stem; and odor. The effect on yield ranges from moderate to severe.

For the boot stages, the approximate injurious temperature is 28 degrees. Damage includes floret sterility; spike trapped in the boot; damage to the lower stem; leaf discoloration; and odor. Yield effect is moderate to severe.

The low Tuesday morning was 25, according to the Mesonet weather-recording station at Breckinride. The temperature remained below freezing for several hours.

Nelson is Oklahoma Cooperative Extension Service ag educator for Garfield County.

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