30 U. S. DEPARTMENT OF AGRICULTURE. 



CABBAGE: GRAY MOLD ROT; BOTRYTIS ROT. 



(See Gray Mold Rot) . 



CABBAGE: RHIZOPUS ROT. 



(See Rhizopus Rot). 



CABBAGE: SLIMY SOFT ROT; SOFT ROT; BACTERIAL ROT. 



(See Slimy Soft Rot) . 



CABBAGE; WATERY SOFT ROT; SCLEROTINIA ROT. 



(See Watery Soft Rot). 



CARROT: GRAY MOLD ROT; BOTRYTIS ROT. 



(See Gray Mold Rot and Artichoke Gray Mold Rot) . 



CARROT: RHIZOPUS ROT. 



(See Rhizopus Rot) . 



CARROT: SLIMY SOFT ROT; SOFT ROT. 



(See Slimy Soft Rot) . 



CARROT: WATERY SOFT ROT; SCLEROTINIA ROT. 



(See Watery Soft Rot). 



CARROT: NEMATODE DISEASE. 



(See Nematode Disease). 



CAULIFLOWER AND BRUSSELS SPROUTS: RING-SPOT. 



Cause: A fungus (Mycosphaerella brassicicola). 



The symptoms of this disease of cauliflower are small 

 definitely circular spots on the leaves. They are visible on 

 both sides of the leaf, have light brown or grayish, dry 

 centers, and are surrounded by olive-green or blue-green 

 borders which shade off into the natural color of the leaf. 

 When the leaves turn yellow, the spots retain their green 

 borders and become very conspicuous against the yellow 

 background. The borders of the lesions are frequently 

 raised, and may show concentric circles. Very minute, 

 black dots, pycnidia, cover the outer edges of the spots on 

 both surfaces of the leaves. They are densely crowded in 

 the outer parts of the lesions, but are more scattered or 

 absent in the centers of the spots. 



Ring-spot is a field disease on the Pacific Coast. Infec- 

 tion takes place in the field, but the lesions may develop 

 and enlarge during transit. 



This disease causes premature yellowing and death of 

 the leaves and thus affects the quality of the stock. 



Ref. (52). 



