REMEDIES FOR THE CANKER-WORM 



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erally pay to apply the bands, even if the orchardist expects 

 to spray his trees, for as intimated above, it has been the gen- 

 eral experience that an orchard badly infested by canker- 

 worms cannot be wholly freed from the pests the first season, 

 before considerable damage is done to the foliage. Some New 

 Hampshire farmers have told me they preferred to fight the 

 canker-worm by the banding, rather than the spraying, method, 

 because their other work kept them so busy during the spray- 

 ing season. But, in general, the orchardist will find it profit- 

 able to spray, because he can thus kill oft' not only the canker- 

 worms and other leaf-eating insects, but the codling-moth as 

 well, and if he so desires, he can in the same mixture fight the 

 apple scab and other fungous diseases. 



The spraying method of fighting the canker-worms aims to 

 cover the leaves with fine particles of poison so that the young 

 worms will eat it 

 and be killed. When 

 an orchard is infest- 

 ed by canker-worms 

 it is very desirable 

 to spray once before 

 the blossoms open. 

 The insects begin 

 hatching early in the 

 season ; if trees are 

 not sprayed until af- 

 ter the blossoms fall 

 considerable d a m - 

 age will be done be- 

 fore the worms are 

 killed. One spray- 

 ing when the buds are in the condition represented in Fig. 5 

 will be of much service. Another should be given as soon 

 as the blossoms fall ; and if the canker-worms are very numer- 

 ous a third — a week or ten days after the second — will be de- 

 sirable. 



The spraying maybe done either with Parisgreen, Scheele's 

 green, or arsenate of lead. Paris green may be applied in a 

 water spray at the rate of one pound to two hundred gallons 



Fig. 5. — Apple Buds. 



