New York AGRICULTURAL EXPERIMENT STATION. 107 
the latter, ulcerated areas at or below the surface of the soil often 
characterize the disease. Plants set in the field are not known 
to be affected. An examination of the Illinois material showed 
that a Rhizoctonia was constantly present in abundance, and 
undoubtedly the cause of the trouble. Rhizoctonia has also been 
found causing a disease of cauliflower seedlings at Geneva. The 
plants were ulcerated at the bases of the stems, sometimes the 
-eniire cortex having disappeared. 
ON THE CARROT, | 
(Daucus carota.) 
The hasty examination of a few carrot fields in August, 1900, 
resulted in the finding of a few plants affected with Rhizoctonia. 
In a field at Flint, N. Y., two specimens were found, and in 
another field near Phelps, N. Ys about a dozen more. In every 
ease the plants were affected at the crown. The leaves were 
all dead, their bases being rotted off and thickly covered with 
Rhizoctonia hyphe. About half an inch of the upper portion of 
the root was also rotten, but the disease showed no tendency to 
run down the root. In some of the specimens there were indica- 
tions that the rot had been initiated by some larva boring into 
the crown of the plant. 
Kiihn! and others have reported the occurrence of Rhizoctonia 
on carrots in Germany, but we believe that up to the present 
time there is no pecord of the occurrence of such a disease in 
America, . 
ON THE CELERY. 
(Apium graveolens.) 
Our knowledge of the occurrence of Rhizoctonia on celery is 
_ confined to two cases in which it was the cause of a destructive 
damping off of celery seedlings. Both of these cases weie 
observed in June, 1899. The first one occurred in one of the 
Station greenhouses at Geneva, and the other in a greenhouse at 
Poughkeepsie where celery plants were grown extensively. In 

'Kiibn, J. Krankheiten der Kulturgewiichse, p. 224. _ 
