Tomatoes. 53 



all. The former are usually caused by unfavorable con- 

 ditions and can usually be controlled by remedying those 

 conditions, but the bacterial blight when once established 

 on a piece of ground is beyond remedy, and the only thing 

 to be done is to cease planting tomatoes on that particular 

 piece of ground for a number of years. Care should be 

 taken never to have a seed bed on or adjoining a field in- 

 fected with blight or other disease. 



