146 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 10 



culoides ventricosus Newport. Indeed, if it were not for the natural 

 agencies of control the farmer would be either obliged to abandon 

 wheat growing in the states east of the Mississippi River or adopt 

 drastic measures of control. 



One of the most promising measures of control of /. tritici at present 

 in some of the Eastern States is to plow under wheat stubble as soon 

 after harvest as is possible, prepare a fine seed bed and sow the clover 

 and grass in August or September instead of seeding in the wheat in 

 the spring. The writer does not have sufficient data as yet on this 

 point to make a definite statement but it seems very promising. 

 Liberal applications of commercial fertilizer or well-rotted barnyard 

 manure will enable the plants to largely overcome the injury. 



There seems to be little hope for beneficial results from burning the 

 stubble. This was attempted for two winters in Indiana and at no 

 time, when the ground was frozen, could the stubble be burned. 



The writer hopes to have the opportunity this winter of making a thor- 

 ough examination of the types of the^arious American species and will 

 then describe any new species he may have, after which he will gladly 

 identify /sosowa for anyone for the privilege of using the data and retain- 

 ing any uniques or asmall series of any that may belong to a new species. 



President C. Gordon Hewitt: If there is no discussion, we will 

 proceed to the next paper by Mr. G. A. Dean. 



RESULTS OF TEN YEARS OF EXPERIMENTAL WHEAT 

 SOWING TO ESCAPE THE HESSIAN FLY^ 



By Geo. A. Dean, Entomologist of the Kansas State Agricultural College and 

 Experiment Station 



The time that wheat should be sown to escape the fall brood of the 

 Hessian fly and the time that it should be sown to produce the maxi- 

 mum yield are problems that have been and are still receiving much 

 attention from nearly every student of these subjects. In a state like 

 Kansas, producing an enormous wheat crop, that may equal one fifth 

 of the production in the United States, as in 1914, and in a state 



1 Contribution from the Entomological Laboratory, Kansas State Agricultural 

 College, No. 23. This paper embodies the results of some of the investigations in 

 the prosecution of project No. 8, Kansas Agricultural Experiment Station. The 

 writer desires to acknowledge the valuable assistance of J. W. McCoUoch, assistant 

 entomologist, for much of the work and the careful supervision of the field experi- 

 ments. He also desires to express his appreciation of the valuable services of Prof. 

 C. E. Call and members of his staff in the Department of Agronomy. 



