— 5- 



For bitter rot of apples make three applications of 

 Bordeaux niixture at intervals of six or seven days, com- 

 mencing about the middle of June. 



DESTROYING SOME INSECTS. 



You will remember that in an earlier lesson we talked 

 about ''the survival of the fittest". In dealing with the 

 insect world this struggle is repeated, for when it becomes 

 a question as to whether insects or fruit grower shall 

 profit by the fruit harvest, the fittest always wins. If the 

 fruit grower is an energetic worker, he attacks the ene- 

 mies of his orchards so thoroughly that the crop is his, 

 but if on the other hand he would rather lose the battle 

 than fight, then the insects show their enterprise and 

 carry off the fruit. Don't you think that under the 

 circumstances they have a right to it? If the fruit grower 

 finds that his strawberry plants are attacked by the leaf- 

 roller insect, he cuts off and burns the foliage as soon as 

 the fruit is picked. The worms, as soon as through feed- 

 ing, pupate in a rolled up leaf and if these are cut and de- 

 stroyed there will be but few insects left over. If undis- 

 turbed, another generation of worms will appear later in 

 the season, probably during August, in which case the 

 second brood may be destroyed by using paris green. ^ 



If another insect, the crown borer, appears, burning 

 off the patch may do good. The most satisfactory way 

 to deal with this insect, and also the white grub or May 

 beetle, is to plow up and destroy the patch, starting a new 

 plantation in land which has not been in sod for some 

 time. 



The larvae of the saw-fly attacking currant, goose- 

 berry, blackberry and grape vines is a very easy enemy 

 to conquer. As soon as it appears, a spray of Paris green 



