In recent history, farmers there have lost entire crops for as many as six or seven years in a row. (transcendeducation.org)
Yellow rust typically does not destroy entire crops, even in the absence of fungicide. (newscientist.com)
When an animal comes along and chomps a bunch of tasty wheat, these anti-nutrients cause discomfort — keeping hungry animals from eating entire crops. (eatrealstaysane.com)