Blight
Blight is a rapid and complete chlorosis, browning, then death of plant tissues such as leaves, branches, twigs, or floral organs. Accordingly, many diseases that primarily exhibit this symptom are called blights. Several notable examples are:
Utah-Idaho Sugar Company
While the blights began occurring in isolated years in most areas, this wasn't the case in Nampa, Idaho. The blight began in 1906 and continued through 1910, reducing area yield to 12% of the break-even amount. The worst period of blight occurred beginning in 1919 and continued through 1934. Overall production was substantially decreased in these years; 1924 saw 50,000 fewer tons of sugar produced than the previous year.