[3] Different studies have found different amounts of yield reduction due to the powdery mildew.

[4] From Iowa studies, measured yield losses were estimated up to 10 bushels per acre.

[5] Environment: The temperature plays an important role in powdery mildew development.

[6] But, it has been found that a shorter leaf wetness duration appears to be a driver of the disease.

[7] Additionally, low relative humidity is required for disease development.