360 The Principles of Fruit-growing 



leaves and young shoots. Miscible oils when trees are 

 dormant. 

 Quince. Blight. — See under Pear. 



RtrsT (Gymnosporangium globosum). — Orange rust of fruit. 



Destroy red cedars in the neighborhood, also wild apples 

 and hawthorns. Spray as for apple-scab. 

 Gbeen Aphids. — ^As for apple-aphids. 



Quince Cueculio {Contrachelus cratsegi). — ^This ourouho is 

 somewhat larger than that infesting the plum, and differs in 

 its life-history. The grubs leave the fruits in the fall, and 

 enter the ground, where they hibernate and transform to 

 adults the next May, June or July, depending on the season. 

 When the adults appear, jar them from the tree on sheets 

 or curcuUo-catchers, and destroy them. To determine when 

 they appear, jar a few trees daily, beginning the latter part 

 of May. Spray with arsenicals. Pick and bum aU infested 

 fruits a month before harvesting. 

 Raspberry. — See Bramble Fruits. 



Strawberry. Leap-Spot, or Leaf-Blight {Mycosphserdla fror 

 garix). — Small purple or red spots appearing on leaves. Leaf 

 appears blotched. 



Spray with bordeaux mixture, 4-4r-60, soon after growth 

 begins and make three or four additional sprayings during 

 season. 

 Leap-Rolleb (Ancylis comptana). — Larva less than }/^ inch 

 long, feeding on the leaves, and rolling them up in threads 

 of silk; two broods. 



Turn under in the fall all old beds that have become worth- 

 less. Spray with arsenate of lead, four pounds in one hundred 

 gallons of water, after the eggs are laid but before the leaves 

 are folded — the first half of May in the latitude of New Jersey. 

 RooT-BOKER (Typophorus canellus). — A whitish] grub ]/s inch in 

 length feeding on the roots. The parent beetle is brownish, 

 and appears in great numbers in May. 



Arsenicals to kiU the beetles. Plant new beds at a dis- 

 tance from old ones. 

 RooT-LotrsB {Aphis forbesii). — From July to the close of the 

 season the Uce appear in great numbers on the crowns and on 

 the roots of the plants. 



Rotation in planting. Disinfect plants coming from 



