192 Proceedings of Indiana Academy of Science. 
noted in one planting near Mooresville, but was not nearly as severe as on 
raspberries. 
CABBAGE. 
Yellows caused by Fusarium conglutinans remains the limiting factor in 
this crop but was not as severe this year as in 1919 owing to the cooler tem- 
peratures. It was prevalent in small gardens as well as fields and the cab- 
bage soils of the state are pretty generally infested. In Lake county the 
resistant Wisconsin Hollander is coming into rather general use as a late 
crop. <A trial of the yellows-resistant Copenhagen developed at the Iowa 
station was made in Lake and Marion counties but the growers were not 
satisfied with the type. 
Black rot caused by Pseudomonas campestris was noticed this year and 
black-leg due to Phoma lingam was found in Lake county and in several 
market gardens near Indianapolis. Clubroot occurred in a few fields in 
Lake county. Hail injury intumescences were noted in one field near 
Indianapolis. 
CANTALOUPE. 
Bacterial wilt caused by Bacillus tracheiphilus was the most important 
disease of this crop and its attacks continued until much later in the season 
than usual. Early in July, 2 to 10 per cent infection was found in fields 
near Decker and Princeton and the disease was later noted near Indian- 
apolis and Lafayette. Where the hill system of culture is used, wilt often 
causes large blanks in the fields and in a bad wilt season like 1920 the row 
system is preferable. 
Leaf blight caused by Alternaria brassicae nigrescens was generally prey- 
alent and particularly destructive this year. In the Decker region it was 
just beginning to show up July 1 and by the end of the season was the 
most prevalent disease. Not only was it severe on the old cantaloupe fields, 
but it also occurred in new soil not previously in cantaloupes. In the 
latter case, however, the epidemic came too late to do serious damage. 
Mosaic was found in several fields early in July and was rather serious 
even at that early date in one field near Princeton. Some plants showed 
such extreme effects of the disease that it seemed likely that the trouble 
was contracted before they were transplanted from the plant bed. Late 
in the season mosaic was very general in the Decker region but the attack 
seemed to have been of rather late inception and probably was correlated 
with the heavy aphis infestation. No anthracnose was found. 
CARNATION. 
Rust (Uromyces caryophilinus) was generally present in greenhouses. 
CARROT. 
Nematode root-knot occurred in the infested area of muck soil near 
Goshen. 
