40 Department of Plant Pathology. 



culture a spraying experiment was conducted to demonstrate the 

 method of control of this disease. There were seven acres of vines 

 in the experimental plat, each acre receiving different treatment. 

 One acre was left untouched and saved as a check. The results of 

 spraying with various strengths of Bordeaux mixture were very ap- 

 parent to the eye and the results will doubtless be very striking. 



" The importance of being on the ground was demonstrated in 

 numerous instances both in the technical and practical work. The 

 meteorological conditions are peculiar to the immediate vicinity and 

 can be determined only by being on the ground and studying them. 



" Incident to the black-rot investigation, opportunity was afforded 

 to follow through the season another disease which is proving de- 

 structive in all the grape-growing regions of the State. The organism 

 causing the disease has been isolated and some points in the life 

 history determined ; also an apparent means of control seems to have 

 been discovered." 



Bean-disease investigation was put under the direct charge of Mr. M. 

 F. Barrus, assistant in the department for the coming year. By co- 

 operative arrangement, the department was able to establish a field 

 laboratory on the farms of the Burt Olney Canning Co., Oneida, N. Y. 

 ITere, beginning the first of July and extending until the latter part 

 of August, Mr. Barrus continued the investigations made in this de- 

 partment for the past three years in the study of bean anthracnose 

 and other diseases of the bean crop. Mr. Barrus had full charge of 

 the spraying operations on the farms of the company, the main ob- 

 ject of his work being to determine whether spraying beans as gen- 

 erally practiced on these farms was profitable or not. Because of 

 the very dry season, there was relatively little anthracnose. The 

 general conclusion reached is that spraying beans with Bordeaux 

 mixture in seasons even when there is no anthracnose may slightly 

 increase the yield, but not sufficiently to make it profitable. 



Mr. Barrus also made studies on the bacterial blight and on the 

 new stem disease of beans, which causes the top to break over at 

 about blossoming time. The work will be continued on these farms 

 during the next two or three years. 



Black-rot of gladiolas. — Mr. E. Wallace, a graduate student in the 

 department has been conducting during the past year, investigations 

 on the bulb-rot of gladiolas. This bulb-rot seems to be the most 

 serious disease that gladiola-growers have to contend with, flosses 

 from this disease alone reach in some cases as much as $8,000 an- 

 nually. It is hoped that the work on the bulb-rot will be completed 



