JOURNAL OF ECONOMIC ENTOMOLOGY 
142 
[Vol. 17 
which later should be shredded or otherwise dispostd of in a way that will kill the 
overwintering larvae. 
A county-wide effort was directed towards cleaning up and burning surplus corn 
stalks and suspected sweet corn stubble in Ashtabula County, Ohio, during the 
spring of 1923. A “corn borer burning week” was announced and carried out 
April 23-28. Through this organized effort of the corn growers there was secured 
approximately eighty percent destruction of stalk remnants which are normally 
allowed to remain. A study of results showed a considerable increase of corn borer 
infestation to have occurred in Ashtabula County during the summer of 1923, but 
that the intensity of this infestation was so reduced as to remove the county from first 
place in the number of insects found per unit of area examined. 
Indications are that stubble infestation and migration from outside areas make 
the burning of such surplus stalks as is practicable only a partial control and not 
sufficient in itself to avoid rapid increase of the pest. 
Clean-up measures, to check the increase and spread of the European 
corn borer in Ohio, must soon be installed and maintained in the infested 
counties. Every state in the corn belt will be vitally interested in how 
effectively this work is done. Thus far, with the exception of one 
county (Ashtabula), we have limited our efforts largely to educational 
work within the infested area. This has for its purpose to bring about 
the proper understanding of the insect and its ability to damage the 
com crop. 
It has been done through the following methods: 
I. Taking county agents, state and county farm bureau and grange 
officers, press correspondents and extension representatives to 
Canada to see the infestation. 
II. Use of moving picture showing the life history and damage from 
the European corn borer in institutes and community meetings 
within the infested townships. 
III. Use of exhibits at county fairs and farm bureau offices. 
IV. Newspaper articles in the local press and state agricultural 
papers. 
The cooperation of the U. S. Department of Agriculture and State 
Department of Agriculture in all of these methods has been enjoyed and 
has contributed to the success of the educational work. As a result of 
these methods, we expect to have belief in the corn borer program prevail 
generally over the infested townships and to have the stage ready for 
action when campaigns for control are determined upon. 
Control Policies Applicable to Ohio 
The control policies recommended as advisable for Ohio were made up 
after carefully studying the work in Canada and Massachusetts, and 
