Tomato Leaf Spot. 71 



some operation less necessary. The ground chosen should he well 

 drained, and for two years previously no tomatoes should have been 

 grown upon it, so as to make sure that the soil is not saturated with 

 the spores. The plants should be trained on stakes, and any diseased 

 portions should be removed as soon as they appear. Spraying with 

 Bordeaux mixture for this disease has been recommended in American 

 publications, but no opportunity has been afforded here of putting it to 

 the test ; since it must be done early, before the disease has made much 

 progress. 



At the Alabama Agricultural FiXperiment Station, Mr. P. S. Barle 

 sprayed the plants with Bordeaux mixture as soon as the disease was 

 observed, and one application was found to check it entirely, so that 

 the plants recovered. The spraying can also be done when the plants 

 are in'bloom. 



Explanation of Plate. 



Fig. 1. — Leaf of tomato attacked by the leaf spot fungus {Septoria 

 lyco'perdci) . The dark blotches represent the diseased areas, the 

 whole being slightly reduced in the photograph. 



Fig. 2. — Section through a spot on the leaf, showing the fruiting 

 portion or spore case [perithecium) , embedded in the tissues, and con- 

 taining numerous sporules. ( x 145.) 



Fig. 3. — Sporules. { x .500.) 



Figs. 2 and 3 from drawings by Mr. C. C. Brittlebank. 



