HE POTATO LEAFHOPPER is a serious and costly enemy 
of potato, bean, sugar beet, and other crops in the North- 
Central and Northeastern States. It is a very small green 
insect which often occurs in vast numbers. 
It injures potato by feeding on the foliage and causes a 
diseased condition called “‘hopperburn” which may, under 
conditions favorable to its spread, ruin an entire crop in one 
or two weeks. 
This leafhopper can be controlled and the ‘‘hopperburn” 
held in check by the proper and timely application of Bordeaux 
mixture. Yields are greatly increased when this spray is used. 
This bulletin has been prepared to acquaint farmers with 
the insect, the nature of its injury to vegetable crops, and the 
proper measures for its control. 
Contribution from the Bureau of Entomology 
L. 0. HOWARD, Chief 
Washington, D. C. August, 1921 
