AMiile many modes of procedure have been advocated, tending 

 to Avard off impending attacks, and perhaps even a greater number 

 of devices constructed and mixtures compounded for the destruction 

 of grasshoppers, we will here consider only such as are readily and 

 cheaply obtainable by the farmer and ranchman and those most 

 practical in ajDjilication. 



DESTROYING THE EGGS. 



Destroying the eggs of the grasshoppers seems to be the only 

 preventive measure that promises to be worth while attempting, 

 except, perhaps, the destruction of the young as they are hatching. 



Fig. 7.— Grasshoppers killed by fungus, Sporotrichum ylohuliferuin. (After Bruner.) 



Destruction of the eggs may be accomplished by either plowing, har- 

 rowing, disking, or cultivating, in the fall or winter, all roadsides, 

 ditch banks, margins of cultivated fields, uncultivated fields, and 

 grassy margins along fences. In short, all waste lands that it is pos- 

 sible to reach in this manner should receive attention, unless it is 

 known that no eggs were deposited there. 



The soil need not be stirred deeply, 2 inches being a sufficient 

 depth to accomplish the desired effect ; and circumstances will proba- 

 bly dictate the kind of tool or tools that a farmer ought to use and 

 where to use them. There is no doubt whatever that if this measure 

 were put into operation at the proper time, in whatever manner is 

 most practicable, disastrous outbreaks the following spring would 

 be forestalled and prevented. Except in cases of isolated farms or 



[Cir. 84] 



