APPLE GROWING 



Is checked only, but as the insects develop their 

 work finally results in the death of the part, 

 unless they are destroyed. The Insect winters 

 in an immature condition on the bark under a 

 grayish, circular, somewhat convex scale about 

 the size of a pinhead. The young, of which a 

 great many broods are produced, are soft 

 bodied but soon form a scale. In the early 

 spring small two-winged Insects issue from these 

 scales. 



After mating the males die, but the females 

 continue to grow and In about a month begin 

 the production of living young — minute, yel- 

 low, oval creatures. These young settle on the 

 bark and push their slender beaks into the plant 

 from which they begin to suck out the sap. 

 In about twelve days the Insects molt and in 

 eight to ten more they change to pupae, and 

 in from thirty-three to forty days are them- 

 selves bearing young. A single female may give 

 birth to four hundred young In one season and 

 there are several generations in a season. This 

 great prolificacy is what makes the scale so seri- 

 ous a pest. 



In fighting it every scale must be destroyed 

 or thousands more are soon born. In order to 

 be able to use a strong enough mixture of lime 



lOO 



