STATE HORTICULTURAL SOCIETY. 107 



REMEDIES. 



The depredations of this insect upon young a))ple trees are very 

 difJicult to contend witli on account of the concealed ))osition of the 

 larva and its habit of attacking the young terminal leaves. The 

 application of arsenical solutions is |)rol)al)ly as promising as any 

 remedy of the kind that can be recommended, but 1 believe that the 

 most effectual means of preventing their injuries in the nurseries is 

 to put boys in the field, show them the concealed larva' in the rolled 

 leaves, and direct them to crush all that they can find. This is not 

 such an endless task as would at first appear, and if the larva^ of the 

 first brood are then destroyed, the outlay will be tenfold repaid. 

 That it is eminently practicable on a large scale has been demon- 

 strated the past season by one of the leading nurserymen of the 

 State, who found that the expense of going over a badly infested 

 field once did not exceed 6ne dollar per acre, and that the outlay 

 was abundantly re])aid by the continued vigorous growth of the 

 trees. In a recent letter the gentleman informs me that he intends 

 continuing the practice "more vigorously in the future than in the 

 past." 



This insect also infests cranberries, and it has been recommended 

 that some form of light trap be used for attracting the moths in 

 cranberry fields. I can see no reason why the same means should 

 not be successfully employed to lessen the numbers of the moths in 

 nurseries. It would seem that such traps might be employed on the 

 warm, damp nights of early spring, when the hibernating gray 

 moths are abroad for the purpose of depositing their eggs. For this 

 purpose there are several forms of patented light traps; or an)' one 

 with a little ingenuity can rig one up to suit himself. 



The operation of spraying nursery stock with the arsenites or 

 other insecticides is much simpler than is generally supposed. For 

 stock of one year's growth, all that is necessary is to go through the 

 field, lengthwise of the rows, with a wagon containing a barrel of 

 the solution, with a hand force i)um[) and spray-nozzle attached, 

 straddling about every tenth row, and spraying the five rows on 

 each side. In this way a field can be gone over easily and rapidly, 

 and sprayed for the leaf-roller, skeletoiiizer and crumpler at com- 

 ]>aratively little expense. I presume that for two or three-year-old 

 trees it would be difficult to straddle the rows with an ordinary 

 wagon without injuring them, but this difficulty may ))e easily 

 avoided b}' leaving every eleventli row vacant, so that the wagon can 

 pass through at any time. 



The spraying apparatus described by Prof. Forbes for use in 

 spraving orchards would l)e just wh;it is needed for this purpose, so 

 I will not go into further detail lunv. The same appartus can be 

 successfully used in the application of insecticides to young apple 

 trees, although in this case for a small orchard all that is necessary 



