DISEASES DUE TO FUNGI 87 
entire plant wilts. On cutting open the stem the wood 
is seen to be of a reddish-brown colour. 
The disease is due to Fusarium vasinfectum Atk., var. 
niveum Sm. (4). At the present time no treatment is 
known whereby infected plants may be induced to 
recover their turgidity. Elimination of infection is im- 
portant if the disease is to be controlled, and infected soil 
should not be planted again unless it has been sterilized 
by heat or with formaldehyde. In cases where occasional 
plants are attacked they should be removed immediately, 
taking up at the same time all the root and a ball of soil 
a foot in diameter. The hole should be filled with a 
mixture of five parts soil and one part lime and re- 
planted. Watering with “ Cheshunt Compound ” at the 
time of planting is an extra precaution which has proved 
beneficial. 
