WHITE BUKLEY TOBACCO RESISTANT TO ROOT-ROT. 11 



or third crops of Burloy or have reason to suspect that the root-rot 

 is present try some of the resistant Burley seed. The grower will 

 thus have an opportunity to determine to his own satisfaction the 

 cause of tobacco-sick soil and at the same time to compare the type 

 and quality of the resistant Burley with that of the ordinary strains. 

 For a proper test it is necessary, of course, that some ordinary Bur- 

 ley be grown on the diseased soil alongside of the resistant strains 

 and handled in the same way in all respects, for otherwise there will 

 be no accurate basis for comparison. Two or three strains of the 

 resistant Burley seed are available for distribution, and although one 

 strain may be slightly better than another, few or no data on this 

 point have yet been obtained. Where the land has had a long rest 

 from tobacco the resistant type is not recommended, for it will not 

 show any improvement over ordinary Burley on healthy soil. The 

 value of these new strains lies in their resistance to root-rot ; hence, 

 there would be no purpose in growing them on land free from this 

 disease except in so far as they reduce the injury from root-rot due 

 to the transplanting of diseased plants from infested seed beds. 



