408 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 11 
tion which would be made available by incorporating in our routine 
freer consultation with our coworkers, to say nothing of the benefit de¬ 
rived by securing recommendations of mutual value. Entomologists 
are not alone to blame for this condition; indeed they have in known 
cases endeavored to cooperate and seek advice from other branches 
of agriculture. 
In our Hessian fly investigations we are dealing almost wholly with 
agronomic practices. Wheat sowing experiments have been started 
at various localities to determine not only the favorable date for sow¬ 
ing wheat to avoid the fly, but to determine the proper sowing dates 
irrespective of fly, and effects of quick-acting fertilizers on the crop to 
overcome injury or to permit sowing wheat after the fly-free date and 
avoid any possible harm often attributed to late sowing. Aside from 
sowing experiments plots where complete meteorological data are 
obtained, plots are grown to determine effect of time of plowing and 
cultivation of ground on resulting wheat crop in its relation to fly, 
effects of variously plowing the stubble to destroy fly, fly-resistant 
values of different varieties, et cetera, all of which are directly or 
indirectly of importance to the entomologist studying the Hessian fly, 
joint-worm and similar wheat pests and at the same time of equally 
great importance to the agronomist. Conversely the agronomist 
cannot lose sight of the insect problems in his investigations. We 
recently had the privilege of exhibiting and explaining results of our 
wheat sowing experiments to one of the best informed experts in soil 
and crop work, who after studying the results remarked that he could 
see how they might easily misinterpret results by failure to take into 
consideration the role played by insects. The interrelations between 
agricultural methods must be more closely studied as the problems 
become increasingly intensive, and to do this it becomes necessary 
that workers in different branches consult more freely and settle dis¬ 
puted or questionable points from the standpoint of agriculture in its 
broadest aspect. This was aptly illustrated in a recent conference at 
Washington, D. C. called by Mr. W. R. Walton, in charge of cereal 
and forage crop investigations of the Bureau of Entomology to con¬ 
sult with the Bureau of Plant Industry and secure their cooperation 
and advice on the suitableness of certain rotations which would enable 
the entomologist to recommend and insure a more universal practice 
of plowing under wheat stubble to destroy Hessian fly and joint-worm. 
This conference obtained for the entomologist recommendations 
which were agreeable to the crop experts and adaptable to the insect 
problems involved. 
The individual investigator can most often plan his experiments 
from his own particular point of view and his knowledge of the prob- 
