THE ASPARAGUS MINER. 5 



range of this insect — for example, in Massachusetts — the last week of 

 June would be a suitable time. 



These plants must be destroyed before the end of the cutting sea- 

 son, otherwise they are apt to provide abundant rust infection. 



(2) The second generation can be destroyed in like manner by 

 pulling old infested asparagus stalks as soon as attack becomes mani- 

 fest and promptly burning them also. 



If this work were carefully done over a considerable area, it would 

 leave little necessity for other methods, since it would do away with 

 these insects in the vicinity and leave few to be dealt with another 

 season; unless, indeed, this insect has an alternate food plant. Thor- 

 oughness and the cooperation of neighboring asparagus growers are 

 essential for success. 



Approved : 



James Wilson, 



Secretary of Agriculture. 



Washington, D. C, January 31, 1911. 



O 



