CUCUMBER 339 
under glass. Ifthe plants are not stunted or checked in 
growth at any time, they are not likely to become 
diseased. 
Anthracnose (Colletotrichum Lagenarium (Pass.), E. 
& H.) is a fungous disease which attacks the cucumber and 
other cucurbits, appearing upon the leaves, stems and 
fruits. There are times when it becomes very trouble- 
some in the greenhouse. Dead spots which are usually 
more than half an inch in diameter appear on the leaves, 
and elongated, discolored and shrunken areas occur on 
the stems. The attacks may become so serious as to kill 
the plants. Either copper sulphate or bordeaux mixture 
is valuable in checking the ravages of the disease. The 
dead vines at the close of the season should be promptly 
removed from the houses and burned, in order to prevent 
the further dissemination of the disease. 
The different forms of “damping-off” fungi may attack 
greenhouse cucumbers. Bulletin 214, Ohio Experiment 
Station, says: “It is serious often where plantings are 
made following lettuce attacked by rosette. The fungus 
in that case is the same as lettuce rosette (Rhizoctonia) 
or lettuce drop (Sclerotinia). There is a strictly damp- 
ing-off fungus (Pythium De Baryanum Hesse) that is 
sometimes troublesome. A species of the Botrytis fungus 
at times attacks pruned parts of cucumber plants, also 
extending its attacks to the blossom ends of young fruits. 
The results of Rhizoctonia on greenhouse cucumbers 
have been curious owing to attacks on the smaller root 
branches or rootlets. The growth of the vines is at times 
checked, accompanied by coloring of the leaves and re- 
duced fruitfulness. Some growers have given the name 
‘leaf-curl’ to this phenomenon, but it is strictly the effect 
of the fungus named. It has been found necessary in 
soil treatments where cucumbers follow affected lettuce 
to increase the strength of formalin drench to four or five 
pounds per 50 gallons of water.” 
