16 Farmers’ Bulletin 1223. 
EQUIPMENT. 
The equipment for such work is varied and may be divided into 
five groups: Ordinary farm implements, sprayers and chemicals, spe- 
cial drags, oil-pouring devices, and gasoline torches or other heat. 
FARM IMPLEMENTS. 
The plow appears to be the most fundamental piece of equipment, 
is always available on every farm, and remarkably efficient when used 
to bury the bugs 7 or more inches under the surface. Following the 
plow closely in time of application are the harrow, drag, clod crusher, 
and roller. The plow is required for preparing 
the soil for the trench, double trench, and ridge- 
groove drags. In case the plow is used for mak- 
ing a furrow-barrier, it is followed by a log or 
a barrel for pulverizing the soil in the furrow. 
The lister may be substituted for the plow in 
making the furrow barrier. The post-hole auger 
(fig. 5) in favorable soils is the most desirable 
type of implement for making holes along bar- 
riers for trapping the migrating bugs. In stony 
ground a digging iron and a shovel will serve 
the purpose. The shovel, hoe, and perhaps grub- 
bing hoe will be needed in some methods of 
laying oil barriers. 
SPRAYERS AND INSECTICIDES. 
Fig. 5.—Desirable type 
pie om Seiipes The high-pressure, gasoline-power sprayer, 
though expensive, stands first in the equipment 
for saving an infested crop. Great care is required in selecting this 
outfit. Best spraying results are secured with a sustained power of 
250 pounds pressure operating two leads of hose and four large- 
chambered nozzles (see fig. 6). This insures the largest kill of 
bugs, greatest economy of labor and insecticide, minimum of chemical 
injury to the crop, and greatest speed in saving the crop-acres. It is 
highly important to select a sprayer with a large pump and air 
chamber and good leverage or gearing system, with all valves and 
wearing parts easy to remove and replace. These features should be 
insisted upon regardless of other considerations, whether ordering 
a gasoline or a man-power outfit. 
If the amount of spraying is large, a gasoline-power sprayer of 
the type shown in figure 7 should be used. For smaller areas and for 
spraying row crops too large to allow a gasoline-power sprayer to 
pass over them, a hand-power outfit of the type shown in figure 8 is 
entirely suitable, provided it has the capacity to maintain a pressure 
of 125 pounds. Smaller outfits than this are not advisable for this 
work, as the value of the spraying depends upon hitting the bugs, 
