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Shelbyville, and Indianapolis. Hoffer reports that the infection was rather 
light, ranging from 2 to 3%. 
Drouth injury to corn became very severe in July and a marked firing of 
the leaves especially on the lighter soils was one of the results. Certain 
localities suffered worse than others in this regard. 
CUCUMBER. 
Dacterial wilt caused by Bacillus tracheiphilus occasioned heavy losses 
in certain greenhouses near Indianapolis and Terre Haute and was com- 
mon in the field crop in Lake County. In the greenhouse crop heavy 
infestation of fruits on diseased vines was noted. 
Mosaic was of considerable importance in the greenhouse and cold-frame 
crop but was not as prevalent as usual in the pickle crop. 
Anthracnose caused by Colletotrichum lagenarium was very destructive 
in certain greenhouses’ where overhead watering was practiced. The 
disease was very destructive on all of the foliage up as high as the water- 
ing »ipes. 
Angular leaf spot due to Bacterium lachrymans was noted in the field 
crop but was net found in the greenhouses. This disease was prevalent. 
in the pickle crop about Plymouth, LaPaz, and Lakeville in 1917 and 1918. 
Powdery mildew caused by Hrysiphe cichoracearum was noted oceasion- 
ally in greenhouses and was more prevalent on the fall crop. 
Downy mildew caused by Peronoplasmopara cubensis was found to a 
limited extent on the fall crop in one greenhouse. 
Nematodes are one of the worst difficulties encountered in growing cucum- 
bers in the greenhouse. One grower reports that the inroads of this trouble 
occasioned ihe insiallaticn of a system of control which entailed an original 
outlay of $15,000 and an annual operation cost of $500. 
EGGPLANT. 
Leaf-spot and fruit rot caused by Phomopsis verans was found in the 
Indianapolis market gardens. More serious, however, was a wilt disease of 
undetermined crigin. 
KALE. 
Yellows due undoubtedly to Fusarium conglutinans occurred in certain of 
the Indianapolis market gardens. 
LETTUCE. 
In the greenhouses, downy mildew caused by Bremia lactucae was preva- 
lent in the winter crops. It has been found that a low temperature greatly 
favors spore germination and this may explain why the disease is not so 
severe in the sprmg crop under glass and is absent in the field crop. Downy 
mildew affects mainly the older leaves and not only renders the older leayes 
unfit for market, but also predisposes them to a Botrytis rot. Botrytis not 
only attacked these older leaves, but also caused a stem rot which usually 
resulted in the death of the affected plants. 
