16 FARMERS’ BULLETIN 691. 
edges of fields, and in fields where the crop permits it, a tubful of bait 
can be placed on a sled or in a wagon, and the driver can sow from 
it, thus getting over the ground rapidly. The ‘‘hoppers”’ in fields of 
low-growing crops can be caught with a hopperdozer if time permits 
and teams are available. But in fields of tall-growing crops, where 
many grasshoppers are on the plants at all times, a modified bait 
should be used. It is prepared by using three or four times the usual 
quantity of sirup and correspondingly less water. It should be ap- 
plied by throwing small quantities among the tops of the plants so 
that it will stick to the leaves or blades. There it will attract the 
grasshoppers immediately. The poison is washed off by rains or 
shaken off by handling, so there is no danger to animals that feed on 
crops treated in this manner. This sticky bait should also be thrown 
among the tops of bushes or trees in which the insects feed. 
ESSENTIALS FOR SUCCESSFUL WORK. 
The most frequent causes of failure to check grasshopper outbreaks 
when methods of control are applied are (1) lack of cooperation 
among the landowners of the infested community and (2) misdi- 
rected or careless application of recommended control measures. 
The former, however, is more often the cause. 
In many localities part of the land is held by speculators, who often 
permit it to lie idle for several ‘years in succession. If such land is 
in sod, grasshoppers use only the outskirts for depositing eggs, but if 
it has been broken and then neglected, a sufficiently heavy growth of 
weeds is often produced to make it a breeding place for large numbers 
of grasshoppers. Where there is much of such land im a community 
the grasshoppers must be destroyed on it, as well as on the edges of 
cultivated fields, along roadsides, or on pasture land; otherwise it 
becomes the center from which ‘‘hoppers”’ scatter to the crops on 
adjoining fields. 
WASHINGTON ; GOVERNMENT PRINTING OFFICE: 1915 
