INSECTS INJURIOUS TO THE TOMATO 



125 



is also a powerful deterrent of flea-beetle attack, act- 

 ing to a less degree against other insects which are 

 apt to be found on the tomato. In applying any spray 

 a sprayer costing not less than $7 is a positive necessity. 



FIG. 36— FLEA-BEETLE 



Does great injury to young 

 plants. Much enlarged. Ac- 

 tual size shown by line at 

 right. (From Chittenden) 



FIG. 37 — MARGINED 



BLISTER BEETLE 



(From Chittenden) 



The Colorado potato beetle, or "potato bug," some- 

 times injures tomatoes, but not as a rule when pota- 

 toes are available. This suggests the use of pota- 

 toes as a trap crop, planted in about three rows com- 

 pletely around the field of tomatoes. The arsenicals 

 used in the same proportion as for flea-beetles will 

 destroy the potato beetle. It is necessary to keep the 

 trap potatoes well sprayed to prevent them from breed- 

 ing on these plants and migrating to the tomatoes. 

 Potato beetles can also be controlled by jarring them 

 from the affected plants into large pans containing 

 a little water on which a thin scum of kerosene is 

 floating. 



Blister beetles may be controlled, under ordinary 



