EXPERIMENT STATION REPORT. 535. 



the way of reiiiedies and fall plowing of infested ground is still. 

 the most effective measure. 



White grubs have been about as usual and have been complained 

 of by strawberi*y growers more than any one other insect. Once- 

 the ground is infested very little can be done, but strawberries- 

 should never be set on old sod land recently turned ; they should 

 not be too liberally treated with stable manure, and they should' 

 not be allowed to become overgrown with weeds so as to attract 

 the beetles that lay the eggs. In general, complaints are more- 

 numerous from the northern tlian from the southern part of the- 

 State. There is no greater enemy to the whitei grub than the hog, 

 and a drove of hogs allowed to root for a week in an infested field 

 will do more to clean it up than any insecticide application known.. 



Cut-worms were not more abundant than usual, but appear to» 

 have exacted no smaller toll than in other seasons. There is- 

 nearly always a short period when complaints are more or less^- 

 numerous and little is heard later in tlie season. Gradually the- 

 growers of plants liable to injuiy are learning how to avoid 

 trouble, and it is only when some unusual conditions arise that they 

 are found unprepared. The only unusual report during the past 

 sununer was of an invasion of cranberry bogs in Burlington', 

 county, and, in this connection, a communication from Massa- 

 cbusetts indicates that some varieties of cut-worms may be respon- 

 sible for a part of the injury charged to the so-called girdle wonn„. 



Shade and Other Trees. 



Shade tree insects continue to be. objects of attention, and Bul- 

 letin 'No. 181, dealing with them, has been steadily called for untii 

 the edition is almost completely exhausted. The number of com- 

 munities taking an active interest in the subject has increased, and. 

 on another page is given in more detail a record of the species that 

 have proved troublesome and of the methods adopted by the various 

 authorities in dealing with them. 



The Catalpa Hawh-Moth, Daremma catalpw has continued its^ 

 northward and eastward spread and at present covers the entire 

 State except perhaps Bergen county. The records obtained and 

 observations made are positive for every other county, and it is- 

 more than probable that even Bergen has some centers of infesta- 

 tion which have not yet been reported to the office. 



