Family Solanaceae 351 



irregular, feltlike spots on the underside of the leaf 

 (fig. 67 a), the upper part of which turns brown, then 

 black, and the affected foliage finally curls and dies. 

 Control. Careful spraying with Bordeaux mixture 

 will help to keep it in check. 



BLACK ROT 



Caused by Macrosporium solani E. and M. 



Black rot is a fruit trouble commonly found in dry 

 weather and generally attacking ripe tomatoes. 

 The spots are black, dry, slightly wrinkled, and ex- 

 tending deep into the interior tissue (fig. 67 f). 



The mycelium of the fungus is at first hyalin to 

 brown, then black. The conidiophores and conidia 

 are dark, with three to six transverse and one to two 

 longitudinal septa. 



SLEEPING SICKNESS 

 Caused by Fusarium lycopersici Sacc. 



Sleeping sickness is one of the most serious of 

 tomato troubles. It is prevalent in New Jersey, 

 Delaware, Maryland, Virginia, and in nearly every 

 Southern State. 



Symptoms. Infected plants become pale, the 

 leaves wilt and droop and never recover (fig. 68). 

 The droopiness of a diseased plant gives it a sleepy 

 appearance, hence the name of the disease. On 

 splitting open a diseased root or stem, the interior 

 vascular bundles will be found to be brown. 



