New research has opened the way for the development of new lines of barley with resistance to powdery mildew. “Powdery mildew is a significant problem wherever barley is grown around the world,” says the lead researcher. “Growers with infected crops can expect up to 25% reductions in yield and the barley may also be downgraded from high quality malting barley to that of feed quality, with an associated loss in market value.”