UTAH. 245 



systematic basis. The establishment of substations throughout the 

 State will make added demands on the college station for thorough- 

 going work and for experts of experience in all departments of the 

 station. 



UTAH. 

 Agricultural Experiment Station, Logan. 

 Department of the Agricultural College of Utah. 

 E. D. Ball, Ph. D., Director. 



The Utah station carried on its work during the year practically 

 without interruption by changes on the station staff. Some rear- 

 rangement was made in the personnel in order to facilitate meeting 

 existing demands. The position of horticulturist remained vacant 

 during the year, and experimental work in this branch was largely 

 in abeyance. Since the close of the year, however, L. D. Batchelor 

 has been appointed station horticulturist, and the horticultural work 

 will again be taken up during the coming year. The work during 

 1909-10, in so far as State aid is concerned, was carried on under the 

 biennial ajopropriation noted in the report of last year. 



Work on the Adams-fund projects was actively pursued as a rule, 

 and general progress was made. The entomological department gave 

 special attention to the study of the life history and distribution of 

 the alfalfa-leaf weevil and to methods for its control. Experiments 

 demonstrated that its injury may largely be prevented by different 

 cultural methods, the use of live stock in pasturing off the fields at 

 certain seasons, and by certain mechanical contrivances for capturing 

 the insects. A report upon the work up to the end of this fiscal year 

 was prepared. 



The investigation of the effect of arsenical sprays upon the life 

 of fruit trees was continued in the laboratory and in the field. The 

 results so far secured show that the corroding of the crowns of apple 

 trees so commonly encountered is not due to the effect of arsenicals, 

 as the ordinary spraying compounds in concentrated strengths have 

 produced no injurious effect upon the bark of healthy trees. Even 

 though in contact for the entire growing season, trees on which 160 

 times the ordinary amount of spraying compounds was placed did not 

 show any injury at the end of the second year. The investigations 

 on sugar-beet pests were with special reference to the cause of leaf 

 curl. 



The chemical department continued the study of the formation 

 and movement of nitrates in irrigated soils, the agi'onomist cooper- 

 ating in the growing of crops in connection with this project. A 

 bulletin on this work was published during the year. The project 

 was somewhat increased in scope by the addition of a series of 



