Victoria blight epidemic devastated which crop in 1946?

Solution (By Examveda Team)

Victoria blight epidemic devastated Oat crops in 1946.
Cochliobolus victoriae is a fungal plant pathogen. It caused the disease called "victoria blight" affecting oats and similar grains.
Symptoms include stem weakening, seedling death, leaf damage, and premature ripening of seeds.
Victorian oat varieties have resistance to crown rust, which is considered one of the most important diseases in oats. In the 1940s, Victoria oats were very popular among American oat farmers because of this crown rust resistance.