PROGRESS REPORT ON THE EUROPEAN CORN BORER 
37 
FIELD CROPS 
Practically none of the common field crops, with the exception of 
timothy and oats (fig. 18), are grown to any extent within the area 
where P. jmbilalis has become well established in New England. It 
was necessary, therefore, to grow small experimental plats of the 
more important field crops at Medford, Saugus, Cambridge, Belmont, 
and TToburn, Mass., in order to ascertain the reaction of the insect 
to them. It seemed desirable to include such other important field 
crops as are normally grown in the South and West, with the object 
of obtaining advance information regarding the adaptability of the 
insect to these crops. 
Fig. 18. — Oats showing European corn-borer larvae infesting stem 
The experimental plats were duplicated at Scotia and Silver Creek, 
N. Y., but most of the information included herewith was obtained 
from the Massachusetts plats, where the insect is more numerous and 
habitually attacks a greater variety of plants under field conditions. 
The results obtained should be considered as merely indicative, 
because it does not seem possible definitely to forecast the reaction 
of P. nubilalis to some of these crops, under American conditions, if 
the insect should become well established where they are extensively 
grown. A summary of the observations relating to the character of 
injury to field crops is included in Table 3. 
