Peach Insects and Diseases 357 



CLOVER MITE (Bryobia pratensis). Small reddish mites attack- 

 ing the leaves, causing them to turn yellow. 



Lime-sulfur while trees are dormant. In summer, use 

 self-boiled lime-sulfur as a dust, or sulfur paste. 



GREEN PEACH-LOUSE, or APHIS (Myzus persicse). A small 

 insect feeding upon the young leaves, causing them to curl 

 and die. 



Lime-sulfur, kerosene emulsion or tobacco extract. After 

 the buds open, either of the last two. 



PEACH TWIG-MOTH (Anarsia lineatella). The larva of a moth, 

 24 inch long, boring in the ends of the shoots, and later in the 

 season attacking the fruit. Several broods. 



Spray with lime-sulfur just after the buds swell. Spray 

 trunk and larger branches in late spring to kill first brood 

 of pupae in the curls of bark. 



PLUM-CURCULIO (Conotrachelus nenuphar}. This insect may be 

 successfully controlled on peach by spraying with arsenate of 

 lead, four pounds to one hundred gallons of self-boiled lime- 

 sulfur. Spray, first, when the "husks" drop from the fruit; 

 second, ten days or two weeks later. It is unsafe to spray 

 peaches more than twice with arsenate of lead. 



RED SPIDER, or MITE (Tetrancyhus bimaculatus) . A small mite 

 infesting many plants, both in the greenhouse and out-of- 

 doors. It flourishes in dry atmospheres, occurring on the 

 under sides of the leaves. In some forms it is reddish, but 

 usually light-colored and two-spotted. Common. 



Persistent syringing with water will generally destroy 

 them, if the spray is applied to the under surface. Use lots of 

 force and little water to avoid drenching the beds. Sulfur 

 and water. Dry sulfur. On orchard trees, flour paste. 



WHITE PEACH SCALE (Diaspis pentagona). Circular gray scales 

 with the exuviae at one side of the center. 

 Same as for San Jose Scale. See Apple. 



Pear. BLIGHT (Bacillus amylovarus) . Flowers, young fruit, twigs and 

 leaves turn black and die. Limbs die back, and sunken cankers 

 form in bark. This is a widespread and very damaging disease. 

 Some varieties appear to be more susceptible than others. 



Not amenable to spraying. Eradicate all wild hawthorns, 

 pears and apples. Inspect and remove all blighted parts of 

 tree. Paint wounds with coal-tar. 



