240 REPORT OF OFFICE OF EXPERIMENT STATIONS. 



A report of the receipts and expenditures for the United States 

 funds has been rendered in accordance with the schedules prescribed 

 by this department and has been approved. 



The South Dakota station and its work are, in general, in good 

 condition, and creditable progress was made in its important lines 

 of investigation, although the funds at the disposal of the institution 

 are limited and the demands upon the station are increasing. 



TENNESSEE. 



Tennessee Agricultural Experiment Station, Knoxville. 



Department of the University of Tennessee. 



H. A. Morgan, B. S. A., Director. 



A feature of the year's work at the Tennessee station was the 

 progress made in organizing and developing the work of the two 

 substations maintained by State appropriations, the progress made 

 at the West Tennessee substation at Jackson being especially note- 

 worthy. (PI. VII.) At the central station there was little change 

 during the year in organization or lines of work. 



Progress was made in the work on several Adams-fund projects, 

 particularly those relating to disease-resistant clover and alfalfa and 

 to humus formation. The valuable resistant strains of clover and 

 alfalfa, originated at the station, were tested in different parts of 

 the State. Of disease-resistant clover, 38 acres were grown with a 

 view to seed i^roduction as well as to testing its value. It is pro- 

 posed to extend these investigations to a thorough study of the 

 physiology of resistance, not only in the case of clover and alfalfa, 

 but also with apple and pear blight and so-called tomato wilt. 

 Studies on the life history of the fungus causing the anthracnose of 

 clover were continued. The studies on humus formation were con- 

 tinued with four typical soils, and observations were made in this 

 connection on the drainage water collected under several different 

 conditions of depth of soil and manurial treatment. Pot experiments 

 were also included, and the whole was supplemented by chemical 

 investigations in the laboratory. In connection with this work, 

 methods of determining humus were worked out and reported upon.^ 



In the project on soil biology, soy beans were grown and bacterio- 

 logical decomposition in humus in soils under controlled bacterio- 

 logical conditions was studied. Investigations of the conditions 

 affecting the life history of the cattle tick were continued. The study 

 of the effect of temperature conditions upon the cattle tick was 

 greatly aided by the use of a special refrigerating plant built for this 

 and similar purposes. The investigations on the peach-tree borer 



iJour. Indus, and Engin. Chcm.. 2 (1910), No. 6, p. 269. 



