TOMATO 



293 



well developed the loss may be very slight. Early and 

 general infection invariably seriously interferes with 

 nutrition, and results in a light crop of small fruits in- 

 ferior in quality. The most thorough, early and repeated 

 spraying of the upper and under surfaces of the leaves 

 with bordeaux mixture is regarded as fairly effective in 

 preventing serious ravages of the mold. It is exceed- 

 ingly important to avoid working among the plants when 

 they are wet, in order to prevent the spread of the fungus. 

 If the disease becomes well established, no kind or 

 amount of spraying will prove effective. 



Fig. 93. Blossom end rot of tomato. 



Blossom-end rot is familiar to all growers of green- 

 house tomatoes. The characteristic appearance of the 

 affected fruit is shown in Fig. 93. The Ohio and other 

 experiment stations have studied the causes of point rot 

 and the means of preventing it, and there seems to be 



