THE ENEMIES OF ALFALFA 219 



plants, but in some way renders the vegetation distasteful 

 to the grasshoppers, so that they turn their course and 

 seek food elsewhere. I have observed that these native 

 grasshoppers enter a field from one corner or side, and 

 that they are not as a rule scattered over the whole field, 

 but occur in great numbers in patches. This being the 

 case, it is evident that with very little labor with this 

 machine the products of a field can be given full oppor- 

 tunity to mature." 



ARMY WORMS 



Tn Nebraska the fall army worm has caused consider- 

 able damage. It is distinct from the true army worm, hav- 

 ing small hairs growing out from small black spots; it 

 has a whitish ''Y" shaped mark upon the head. The 

 parent of the worms is a moth of a yellowish, ash-gray 

 color. The female moth deposits her eggs in clusters 

 upon the leaves and stems. With the approach of cold 

 weather the worms pass into the ground and enter the 

 chrysalis stage about one or two inches below the surface. 

 When very numerous the only effective treatment is to 

 disk thoroughly in the spring. 



BIXD WEED 



Bindweed, belonging to the morning-glory family, is 

 one of the meanest weeds that annoy alfalfa raisers. It 

 spreads from the root, and is more than liable to smother 

 out alfalfa or any other crop which tries to occupy its 

 ground. If infested fields could be grazed closely with 

 hogs or sheep, they might keep the bindweed down and 

 finally eradicate it. If this cannot be done, the only rem- 

 edy is to plow and use the land for some other crop. 



