1738 



Report of Farmers' Institutes 



or early August. The late brood of worms is, during some seasons, 

 more numerous than the tirst brood and is responsible for the 

 increasing numbers of wormy apples as the time of picking 

 approaches. These late worms spend the winter in cocoons as 

 described and do not transform to moths until spring after the 

 apple trees have blossomed. 



Treatment. — Xearly all the codling-moth wonns seek the blos- 

 som or calyx end of the young apple, where they feed before bur- 

 rowing into the interior. The object in spraying is to coat this 

 portion of the apple with poison so that the young worm may be 

 destroyed at its first meal. The best time to apply the poison is 



Fig. 1,33. Couli.nu ^Ioth Work in Apple (a) a.nu Adult Moth (b) 



after the blossoms have largely dropped and before the calyx cup 

 has closed. Direct the nozzles so that the spray will be shot into 

 the throat of every blossom or calyx cavity. This is the first and 

 most imj^ortant treatment for the codling moth. It is more 

 efficient than all subsequent treatments and should never be 

 omitted. 



As worms hatch and burrow into the apples as long as three 

 weeks after the falling of the blossoms, a second spraying two or 

 three weeks later than the first treatment is practised by a few 

 fruit growers. While this application undoubtedly kills many 

 worms it is not made by orchardists generally unless apple scab 

 threatens because of the lack of time and the pressure of other 

 fiii'iii work. These two si)rayings, as described, are the first and! 

 cliief steps in the campaign against the first brood of worms. 



The next step in point of effectiveness is to spray f(n* the second 

 brofid of womis. The time to make this treatment Ls late in July;- 



