60 VEGETABLE GAKDENING. 



should then be tramped firm and planted with a 

 green crop of the cabbage family. This ground 

 skould be marked and planted with a green crop for 

 the following two years, as beans, turnips, root 

 crops, etc., are also susceptible to attack. 



Leaf Curl (Macrosporium solani). Plants affected 

 with this disease have curled, unhealthy leaves, 

 are stunted in growth, and incapable of produc- 

 ing a satisfactory crop. No remedy is known ; but 

 if the following cultural points are attended to 

 this disease is not likely to prove troublesome : 

 (1) Where an outbreak has occurred the haulm and 

 refuse should be collected and burnt to prevent the 

 spores from infecting the soil ; (2) Clean seed from a 

 healthy crop must be secured; (3) Tubers for seed 

 should be lifted before they are over-ripe : this is 

 important, as potatoes that become very ripe before 

 lifting are more liable to leaf curl, and this occurs 

 most frequently amongst early varieties. 



