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:
British Queen potato
This variety is highly susceptible to blight, however it often avoids blight because it flowers so early. The plant of this variety flowers freely and the blooms are white and have yellow centres. The dry matter content of this variety is high and the texture is light and floury. This variety is said to be one of the best for mashing.