The Bulletin. 43 



The \Yilt. (Yellow Sides.): The leaves turn pale and fall away. 

 The plants die. Often the stem rots and the plant topples over to one 

 side. This disease is of unknov^^n cause, but seems to recur year after 

 year on the same soil. Long rotation should therefore be followed and in 

 general precautions suggested under Black Hot should be observed. 



All of the above diseases affect besides cabbage, kale, cauliflower, 

 turnip, rutabaga, collards, Brussels sprouts, radish, stocks, candytuft, 

 sweet alysium, shepherd's purse, pepper grass, penny cress, black mus- 

 tard, charlock, false flax, hedge mustard, and other cruciferous plants. 



These plants should therefore be avoided in any system of rotation 

 designed to prevent these diseases. 



