STRAWBERRY INSECTS 



363 



Means of control. 



Experiments in New Jersey have shown that the strawberry 

 leaf-roller can be effectively controlled by a single, timely 

 application of arsenate of lead, 5 pounds in 100 gallons of water. 

 The poison should be applied within a week after the first 

 appearance of the moths and just before the young larvse begin 

 to fold the leaves. Spraying after the leaves are folded will 

 do little or no good. 



In some parts of the country the leaf-roller is controlled by 

 burning over the strawberry field soon after the crop is harvested. 



Fig. 320. — Larva of the ob- 

 solete-banded strawberry leaf- 

 roller beginning to roll a leaf. 



Fig. 321. — Full-grown larva of the obsolete- 

 banded strawberry leaf-roller (x 3). 



In this way practically all the larvse and pupae in the folded 

 leaves are destroyed. 



Strawberry beds that are to be abandoned should be plowed 

 under directly after the picking of the last crop and not allowed 

 to remain as breeding places for the moths. 



References 



Forbes, 13th Rept. State Ent. 111., pp. 87-93. 1884. 

 Ky. Agr. Exp. Sta. Bull. 31, pp. 13-16. 1890. 

 N. J. Agr. Exp. Sta. Bull. 225, pp. 17-23. 1909. 



