Source: Glen Arnold, Ohio State University
Strong thunderstorms last weekend across northern Ohio caused resulted in hail damage in wheat fields. Wheat is in the boot stage in northern Ohio with head emergence expected soon.
Joe Lauer, University of Wisconsin Corn Agronomist has an information sheet on hail damage in small grains here.
Joe Lauer writes "The kind of damage and amount of loss due to hail is determined in part by the crop growth stage. Before jointing, small grains are least susceptible to hail damage. The spike is still below ground and protected from injury. Hail damage occurring during jointing or the boot stage is difficult to assess. Spikes can still pollinate and fill, and regrowth from new tillers can occur. The greatest yield reduction from hail damage occurs in the milk stage near Zadoks 75 (Busch, 1975). Hail damage occurring at other growth stages from boot to ripe kernels (Zadoks 45 to 90) is variable and further influenced by environmental conditions following the hail damage (Afanasiev, 1967).
"Let the crop recover for 5 to 7 days before assessing the remaining small grain stand. Adequate time does remain for planting soybeans or some other alternative crop, if the small grain stand is no longer economically viable.”