36 CIRCULAR 639, U. S. DEPARTMENT OF AGRICULTURE 
number of plants will be destroyed before the infestation can be 
brought under control. Applications made before the plants are 
set in the field appear to be the more effective. 
Cutworms sometimes assume the armyworm habit and migrate 
into a tobacco field from outside areas. Under these conditions the 
bait should be spread in a protecting barrier around the tobacco 
field. 
OTHER CONTROL METHODS 
In cases of serious infestations, hand picking of larvae is some- 
times employed. This work can best be done early in the morning, 
when they are most easily located. 
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Figure 40.—Mixing cutworm bait in a wagon body. This or similar types of 
boxes are usually available and can be used as mixing troughs when large 
quantities of bait are to be prepared. 
In this cigar-wrapper district, applications of paris green or 
barium fluosilicate for the control of tobacco flea beetles are often 
made to the crop soon after setting. These applications assist in the 
control of cutworms. The corn meal and lead arsenate mixture 
employed to control budworms also assists very materially in con- 
trolling cutworm infestations on newly set plants. The cutworm 
control is most effective when the applications are made with shaker 
cans which deposit the poisoned meal on the plant foliage and on 
the ground about the base of the stalk. 
GRASSHOPPERS 
Grasshoppers are pests of considerable importance in fields of 
sun-grown tobacco and in shaded tobacco fields. These insects 
breed in greatest abundance in uncultivated grassland, but frequently 
