CABBAGE. 



153 



plant, causing it to rot. The dark colored veins in the freshly- 

 cut stem and leaves are the best indications of this disease and 

 are its characteristic marks. 



Cabbage that is even slightly affected will not keep, for this 

 "•ot spreads rapidly in stored cabbage, and in selecting cabbage 

 for storage, the stems and outer leaves should be examined for 

 the blackened vein so characteristic of this disease. 



The germs ot the disease may pass the winter In the soi! 

 and reinfect cabbage, cauliflower, turnips or similar crops anr* 

 even such nearly allied weeds as Pepper Cress and Shepherd's 

 Purse the following season. If diseased cabbage is fed to stock 

 the disease may be distributed by the manure. 



Remedial Measures. — In view of the Lbove facts, it seems 

 reasonable to take the following precautions: (1) Do not plant 

 cabbage a second year on land where the disease is observed 

 without several years intervening, during which no nearly allied 

 crop has been grown on it. The seed bed should also be made in 

 new soil each year pg the plants may become diseased v/hei 

 vary young. (2) D AOt use manure for cabbage crops' from 

 animals that have 'been fed uncooked diseased cabbage. (3; 

 Since the disease may be spread by insects which fly from out, 



plant to another, they should be 

 kept in check as much as possi 

 ble. (4) When the disease ap- 

 pears the field should be gone 

 over systematically and all dis- 

 eased leaves removed and de- 

 stroyed as soon as they appear. 

 If the disease has enter«=^d the 

 stem the whole plant should be 

 destroyed This destruction 

 should .consist of burning or deep 

 burial. (5) Since this disease fnay 

 be continued on Wild Mustard, 

 Pepper Cress. Shepherd's Purse 

 Figure 70.-Brussells Sprouts. and other allied plants, they 



should be carefully kept out of 

 land that has been once infested if it is intended for cabbage. 



