Todd Johnson, OSU Agricultural Communications Services Wheat is the largest cash crop in Oklahoma, according to U.S. Department of Agriculture data. Free field day can be attended in person or viewed online. Wheat growers should make plans now to attend Oklahoma State University Extension’s 2021 Chickasha Wheat Field Day on April 30 or watch video presentations of the event online afterward. The 9 a.m. to 11 a.m. field day will take place at the OSU South Central Research Station in Chickasha, Oklahoma, located at 1105 E. Iowa St. near State Highway 62. There is no cost to attend. Centers for Disease Control (CDC) guidelines will be implemented, including social distancing and the wearing of face masks. Masks and hand sanitizer will be provided to attendees.