GRASS-HOPPER CONTROL 



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cover ahoul fwc acres, iL;i\ini; a cost of alxnit fort}- cents per acre for 

 materials. It was frequently sown by hand, the sower carrying a 

 bucket of the mixture on foot, or on the rear of a wagon or auto 

 truck. The endgate seeder was also successfully used. Occasion- 

 ally favorable results were not apparent, but in a very large per- 

 centage of cases the owners of the infested fields were well pleased 

 with the outcome. Some have estimated that as many as ninety per 

 cent of the hoppers were destroyed by one treatment. The poison 

 bran was used successfully throughout the infested region. As far 

 as is known Adair and Union counties did the most thorough work 

 in this way. Several thousand acres were treated in Adair county. 

 A visit to Adair county during the summer of 1919 found only a 

 few grass-hoppers, and the farmers for the most part were highly 

 pleased with the results of the poison bran as used in the previous 

 year. 



The question is frequently raised as to the danger to farm animals 

 in putting out the poison bran. The only report of loss that came to 

 the attention of the writer is from Mahaska county, where the bran 

 mash was used in a cornfield seriously attacked by grass-hoppers. 

 So many were killed that the neighbors' chickens feeding on the 

 dead grass-hoppers met a like fate, but the corn was saved. 



While the poison bran treatment is almost always successful, the 

 inexperienced observer does not see the results so readily as with the 

 catchers, so that it has been more dilificult in some cases to make 

 the appeal with the poison bran than with some catching device. 



Fig. 3 2. — Krebill's Hopper-dozer. 



