28 



THE APPLE LEAF LIOPPER 



This u])])L'r ])iirtit)ii of the ho]:)])er(l()zcr was so constructed that the 

 lower ends of the corner posts of the frame set down snugly into the 

 corners of the pan, and the pieces which were nailed around the sides 

 of the lower part of the frame fitted closely against the upper edge of 

 the pan, thus forming a closed box when the upper and lower por- 

 tions of the hopper were put together, except that the canvas on the 





.4,1 -i.i'.TOJ^n 



Fig. 12 Frame of hopperdozer. 



front side of the upper portion did not reach clear across, but gapped 

 in the middle to allow for the passage of plants through the hopper. 

 This hopper was designed by Mr. R. A. Vickery primarily for use 

 against Empoasca mail on experimental rows of alfalfa, but there 

 seems to be no reason why it could not be used for bush beans as well, 

 or for any other kind of low plant grown in rows, which may become 

 seriously infested with Empoasca, or any other similar leaf hopper. 



