JOURNAL OF ECONOMIC ENTOMOLOGY 



OFFICIAL ORGAN AMERICAN ASSOCIATION OF ECONOMIC ENTOMOLOGISTS 



AUGUST, 1914 



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There have been marked advances in the uses of insecticides in 

 recent years and it is a pleasure to include in this number an article 

 relating to soil fumigation. This is a difficult problem and one worthy 

 of careful study. Enough progress has been made to suggest the 

 possibility of a practical soil fumigant being developed for the control 

 of subterranean pests of staple crops. It might be feasible to use 

 such materials in connection with fall plowing, if land could not be 

 safely planted within a few weeks after treatment. This is one of the 

 weak points in entomological practice. It is to be hoped that the 

 inherent difficulties will be overcome soon and a generally available 

 soil fumigant found. 



The interdependence of entomologists as well as the value of our 

 insecticide batteries was shown by the developments of the last few 

 weeks in New York state. A localized though widespread outbreak 

 of the redlegged grasshopper and several associated forms was quickly 

 handled in threatened grain fields by the use of the Kansas b'ait, brought 

 to notice only last year. Dying insects were to be seen within four 

 hours after the distribution of the bait and within three days about 

 four-fifths of the grasshoppers, in a field were dead. Our eastern grass- 

 hoppers are rarely migratory and consequently there was not the 

 need of general cooperation among farmers in the infested area as in 

 Kansas, though united action is desirable and increases the value of 

 the measures adopted. 



