July, 1908. J CATERPILLARS INJURING FOLIAGE. 225 



REMEDIES FOR TUSSOCK MOTHS. 



Evidently all of the Tussock jMoths will respond to the same 

 means of control on account of the similarity in life history. 



In the winter the eggs may be easily removed and destroyed 

 while pruning the trees. The treatment of these pests closely re- 

 sembles that for the Gypsy Moth, to which they are nearly re- 

 lated. "Where trees have been cleaned of etriis and neighboring 

 trees are badly infested, which will usually occur only with the 

 White-marked Tussock ]\Ioth in New Hampshire, they may be 

 protected by banding with bodlime, tanglefoot, printers' ink on 

 paper, or any similar sticky substance over which the caterpillars 

 cannot crawl in ascending the tree, and which Avill not injure 

 the tree. 



Where apple orchards have been sprayed with an arsenical, 

 such as Paris green or arsenate of lead late in May, in the usual 

 manner for the codling moth and diseases, there will be little 

 trouble with the first brood, and probably but few of the second. 

 Should the second brood appear numerous, spraying about 

 August 1st, as for the other apple caterpillars described, will 

 destroy them. 



SPRAYING FOR APPLE CATERPILLARS. 



It will be noticed that most of the common apple caterpillars 

 above described are injurious late in the sunnner and that spray- 

 ing about August 1st is advised for their control. Inasmuch as 

 the young caterpillars of the brown-tail moth, now so prevalent 

 over southern New Hampshire, may also be controlled by spray- 

 ing at this time, it would seem that a single thorough spraying 

 might well become a customary orchard practice, the same as 

 should the two sprayings in May and June for the codling moth, 

 diseases, and spring caterpillars. 



Insecticides. — Of the insecticides use Paris green or arsenate 

 of lead. Paris green should be used at the rate of one pound to 

 100 gallons of water, to which should be added a pound or two of 

 freshly slaked stone lime. In mixing stir up the Paris green 

 with a little water so as to form a paste before adding to the bar- 

 rel. Arsenate of lead is slightly more expensive, but the greatest 

 cost of spraying is the labor, and it has decided advantages. It 



