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The usual method of checking the spread of the trouble 

 is to remove and destroy the infested leaves as soon as noticed, 

 and a sharp watch should be kept for them. This tends to check 

 the dissemination of spores, which would otherwise be produced 

 in great numbers and be carried to fresh plants. This method 

 is stated to be effective as a rule, and is perhaps the most econo- 

 mic in a country where labour is cheap. 



There is little doubt that spraying with one of the standard 

 fungicides would be effective in checking the fungus, but the 

 writer is not in possession of information concerning the use of 

 fungicides on tobacco plants, 'and'it is possible that copper salts 

 would have an injurious effect on the final product. 





