OKLAHOMA. 221 



San Jose scale, and the facts gathered from field experiments seem 

 to indicate that this disease will be a valuable factor in the control of 

 the insect. 



The various lines of work undertaken by the station with the 

 Hatch fund were continued during the year. The department of 

 agronomy harvested the eighteenth crop in the experiment with 

 winter wheat grown continuously with and without manure. The 

 records for the past 11 years show an average yield of 14 bushels 

 per acre without manure and of 24 bushels with manure. Corn, 

 cotton, and Kafir corn have been grown in the same way for 8 years. 

 Rotation experiments covering 3, 5, and 6 year periods were con- 

 tinued, and a fertility test with alfalfa, using lime, nitrogen, phos- 

 phoric acid, and potash in ditferent amounts, was carried on. Variety 

 tests were made with wheat, cotton, oats, corn, Kafir corn, and other 

 crops of importance to the region. Breeding experiments were con- 

 ducted with corn, cotton, Kafir corn, etc. Individual plants of cot- 

 ton were ginned for the purpose of making fiber tests. Experiments 

 were also conducted on methods of cultivation and depth of plowing 

 for corn. The selection of Bermuda grass Avas continued in a grass 

 garden maintained for the purpose. 



The department of chemistry made analyses of alfalfa plants in 

 connection with fertility tests and studied the inorganic constituents 

 of the grain, stalks, root, and whole plant in connection with the 

 corn and sorghum projects under the Adams fund. Digestion experi- 

 ments were conducted with sheep fed on prairie grass, Bermuda grass, 

 and alfalfa. 



Considerable work was done by the department of entomology on 

 spraying to control the melon aphis. Studies Avere also made on 

 the garden webworm, the locust borer, the twig girdler, and on para- 

 sites of the green bug. In connection with this work practical 

 methods have been suggested for controlling the plum aphis, the 

 twig girdler, and the melon aphis. 



The planting experiments in forestry were continued by the depart- 

 ments of horticulture and botany. A bulletin reporting the results 

 of this work points out the possibilities of tree planting when the 

 proper methods are employed. Variety tests of orchard and small 

 fruits were made on a small scale, together with tests of varieties and 

 methods of cultivation of tomatoes. 



The veterinary department made a somewhat extensive bacterio- 

 logical study of flavor of milk and cream with special reference to 

 the grading of these products. Work was also begun on the produc- 

 tion and distribution of serum for hog cholera. The station makes 

 a charge of 1 cent per cubic centimeter for serum. The distribution 

 of blacklec: vaccine was continued with other than the Federal funds. 



The animal husbandman conducted experiments with hogs in which 

 half and full rations of corn were fed in the house in connection with 



