250 



Anthracnose 



Caused by Collctotriclnim sp. 



Anthracnose of asparagus has not been often reported. It produces 

 on the stem a light-colored spot of considerable size which becomes 

 covered by black dots, composed of the reproductive structures of the 

 fungus. 



Its only known occurrence in Illinois was at Polo, Ogle county, in 

 1932 and it was not serious there. 



Beet and Swiss Chard 



Beet and Swiss chard are among the commonest of the garden vege- 

 tables. It is seldom that a garden, no matter how small, does not have 

 at least its row of beets, and local gardeners usually grow a considerable 

 quantity for sale in season at their local markets. There is one disease 

 common to both plants. 



Leaf Spot 



Caused by Ccrcospora hcticola Sacc. 



Leaf spot is the only serious disease of these vegetables known in 

 Illinois. It appears as roundish gray-brown spots with purple borders, 

 often so numerous as to destroy the leaf, resulting in smaller roots, and 

 spoiling the leaves for use as greens. 



It has been known in Illinois at least since 1888, when it was found 

 in Champaign county by M. B. Waite. It is known at the present time 

 in 67 counties, the distribution of which is shown on Map 110. It is 

 evidently wide-spread and common in the state. 



Cabbage 



Beginning with 1019, Illinois has ranked among the states growing 

 important cabbage crops. An acreage of from 1300 to 1(500 acres, with 

 an annual yield per acre of from 5 to 8 tons and a total production for 

 commercial purposes of from 530 to 1040 cars of 12.5 tons each, places 

 the state high in the list as to cabbage production. If the diseases of 

 this crop were under control the yield per acre might equal or exceed that 

 of Wisconsin and Michigan. 



Yellows 

 Caused by Fitsarhtm conglutinans Woll. 



Cabbage yellows stands out pre-eminently as the limiting factor in 

 cabbage production in Illinois. It is commonly known as "yellows." 

 "yellow-sides," and "dry-rot." Its first symptom is a yellowish color of 

 the lower leaves, often restricted to one side of the plant or even to one 

 side of the leaf, which first appears from two to four weeks after trans- 



