140 



The Fruit-Growers Guide-Book 



plum curculio. It does this because it is the insect which 

 causes the worm in the apple. It can be very effectively 

 controlled by spraying with lead arsenate or Paris green. 

 During the past half dozen years this insect has received 

 a great amount of attention from orchardists and ento- 

 mologists and very effecient means for its control have 

 been perfected. There are two broods of this worm in 

 each season, and the eggs of the first brood are laid on the 

 leaves or young fruit and the worm enters the apple 

 through the calyx. Where this brood of worms can be 



Codling moth: A, portion of an apple showing tunnels 

 made by the worm; b, calyx at which the worm entered; d, 

 pupa; e, larva or worm; f and g, adults. 



controlled there will be but little trouble from the second 

 brood. On account of this habit of entering at the calyx 

 it is apparent that the calyx should be filled with the 

 poison. The second brood appears about mid-summer and 

 enters the apple through the side. It usually selects a 

 place where two apples touch or where a leaf covers the 

 side of a fruit. 



