What about Mike Wang Gump?

Caused by low temperature freezing injury and disease.

1, freezing injury at low temperature. From the booting stage to the heading stage of wheat, if there is a cold current at low temperature, the wheat awn will dry up when the cold damage is light.

2, caused by disease. The late growth stage of wheat is the high incidence period of wheat glume blight. Under high temperature and high humidity, some varieties with poor disease resistance are easy to induce glume blight. After wheat awn infection, brown spots appeared at the base of wheat awn. When the spots are around for a week, it is best to make the wheat awn white and dry.