Plant Pathology, 51 



could not be met because of lack of equipment and men to duplicate 

 exhibits at fairs held during the same week. Some member of 

 the department was constantly with the exhibit to show and explain 

 the diseased plants, photographs and charts. Over fifteen hundred 

 cards giving the name and address of the plant pathologist were 

 handed out to persons making especial request for them. The large 

 crowds which constantly gathered at this exhibit spoke most en- 

 couragingly for this form of extension teaching. 



II. Investigation Work. 



The work of investigation during the past year has been devoted 

 to a continuation of a number of problems taken up in 1906 or 

 earlier. A few new problems have been undertaken. Owing to the 

 interruptions and delays incident to the building and equipping of 

 new quarters for this department, the investigation work has not 

 been very satisfactory. With practically no cultural or microscopic 

 facilities for doing work, some of the problems have had to go over 

 to another season. Much time has been consumed in the planning 

 of furniture and equipment for the new quarters in the top of the 

 agronomy wing of the College of Agriculture. I am, however, able 

 to report some progress on the following problems : 



(i) Bean Anthracnose. — Work on the control of the bean an- 

 thracnose has been continued. Although this disease did relatively 

 little damage in the State this year, owing to the dry weather, it 

 was nevertheless generally present. Careful germination tests of a 

 considerable number of samples of bean seed from all over the 

 State and from other states showed the disease constantly present 

 to the extent of four to fifty per cent. Exception must be made in 

 the case of one lot of seed sent in from the irrigated lands of Colo- 

 rado. These were entirely free from the disease as shown by test. 

 A small plot planted to these beans on the University farm gave a 

 clean crop. A similar plot grown from seed known to be diseased 

 gave a large percentage of spotted pods. We feel certain that the 

 practical control of the disease must be by the use of clean seed 

 rather than by spraying. A preliminary report on this problem is 

 now in preparation. 



(2) Alternaria Blight of Ginseng. — The work on the alternaria 

 blight of ginseng, which was largely completed last year except for 

 some culture work, has had to go over until another year because 

 of lack of facilities for doing this work. The bulletin on this sub- 

 ject has therefore not appeared. 



