APPLE GROWING 



bud scales and as soon as these begin to open 

 in the spring it passes to the tender leaves which 

 it punctures, producing light green or reddish 

 pimples according to the variety of apple. 

 These later develop into galls or blisters of a 

 blackish or reddish brown color and finally re- 

 sult in the destruction of the leaf. Trees are 

 sometimes practically defoliated by this pest, 

 and this at a time when a good foliage is most 

 needed. Inside of the galls eggs are deposited 

 and when the young hatch they burrow in all 

 directions. In October the mites abandon the 

 leaves to hibernate in the bud scales again. 

 A strong contact spray of lime sulphur when the 

 trees are dormant destroys the young mites 

 while they are yet on the bud scales, which is 

 practically the only time when they are vulner- 

 able. 



9. Aphides, or plant lice, are of seasonal im- 

 portance. Although nearly always present, it 

 IS only occasionally that they become so num- 

 erous as seriously to damage mature apple trees. 

 But they are more often serious pests on young 

 trees where they should be carefully watched. 

 Their presence is determined by the curled and 

 distorted condition of the terminal leaves on 

 the under side of which the green or pinkish 

 lice will be found. Eggs deposited in autumn 

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