232 SECOND THOUSAND QUESTIONS IN AGRICULTURE 



Twig Borer. Spray with lime-sulphur just when buds are swelling. 



Blight, Peach. Spray last of November or before December 15th 

 . with Bordeaux or dilute lime-sulphur. 



Curl Leaf. Spray thoroughly with Bordeaux. Later sprayings 

 should be made with weaker Bordeaux. 



Shot-hole Fungus. Spray with Bordeaux about ten days before 

 buds open and with weaker Bordeaux when fruit is about one-fourth 

 grown. 



Cherries, Prunes, Plums. 



Cherry Slug. Feed upon the upper surfaces of the leaves, expos- 

 ing the veins. Spray with lead arsenate or dust dry arsenate liberally 

 upon the trees as soon as slugs appear. 



Prune Aphis. Spray in the fall with lime-sulphur and as soon as 

 the lice appear with kerosene emulsion or tobacco wash. 



Peach Root Borer. See same under Peach. 



Canker Worm. See same under Apple. 



Brown Day Moth. Attacks particularly the prunes and cherries. 

 Spray with lead arsenate as soon as larvae appear. 



Red Hump (Schizura concinna). Spray early with lead arsenate. 

 Burn cocoons. 



Brown Rot or Fruit Mold. Produces a rot on the fruit. Spray 

 with Bordeaux early in the spring, and with weaker Bordeaux as soon 

 as the buds begin to open. 



Leaf Curl or Witches Broom. Cut out and burn infested parts. 

 Spray with Bordeaux early, and with weaker Bordeaux as soon as the 

 buds begin to swell. 



Leaf Spot or Shot Hole. Produces a shot-hole effect upon the 

 leaves. Spray in early spring with Bordeaux, when the buds begin to 

 open with weaker Bordeaux, and when the fruit is one-fourth grown 

 with weak Bordeaux. 



Powdery Mildew. Appears on the leaves late in the season. 

 Spray as soon as found with Bordeaux and repeat if necessary. 



Crown Gall. If on young trees recently set from nursery, remove 

 and burn. If bearing trees, chisel away until only the healthy wood 

 remains. Paint with Bordeaux paste. Watch for a reappearance and 

 treat as before. 



Gummosis. Dig out the gum pockets and wash out with Bor- 

 deaux paste. 



Nuts. 



Aphis. In winter spray with lime-sulphur. For summer spraying 

 use emulsions or tobacco washes. 



Walnut Scale. Spray with lime-sulphur or crude oil, when the 

 trees are dormant. 



