




RESISTANT DETROIT 
*55 days @ Conforms in type with Copenhagen Market 
from which it was selected. Heads are globular to slightly 
flattened. Contains about 80% resistance. 
*Days from setting of plants to maturity as deter- 
mined under favorable conditions in Wisconsin. 


-purple-red, with heads becoming a deeper color with maturity. Heads 
are solid and compact from formation to maturity, permitting early 
cutting if desired. Ideal late fall shipper and a and stores aeare 
Highly: resistant to the Yellows . 

“Days fol. ‘cans of pldats to maturity as deter- 
mined under baverable ipeeditons in ects 



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Section of greenhouse showing the breeding of new 
resistant strains and improvement of the present 
ms varieties. 
Typical stock seed plant grown on Yellows sick soil. 

Breeding grounds where the seed produced in the 
greenhouse is checked, and the undesirable and 
susceptible plants are eliminated. Note the bamboo 
stakes marking ‘’Sick’’ plants, also 2 rows commercial 
strains (non-resistant) practically wiped out by the 
disease, proving that the soil of the trial grounds is 
heavily infested with the ‘’Yellows,”’ 

