52 The Horticulturist's Rule- Book. 



Orange. Orange-leaf Scab {Cladoi'gorium) .—The leaves become 

 yellow and distorted. 



Eemedj/.— Spray with Grison liquid, or carbolic acid and 

 glycerine mixture. 

 Peach. Brown-Rot.— See under Cherry. 



Curl, Leaf-Curl or "Frexchixg " {Taphrina deformans, Tul.; 

 written also Ascomyces deformans and Exoascus deformans). 

 —The leaves become blistered and crumpled early in the 

 season and fall off. 



Remedies.— Good culture, to enable the tree to put forth new 

 leaves, is to be recommended. Spray in spring, before the 

 buds open, with sulphate of copper or u^on, and follow with 

 two or three applications of ammoniacal carbonate of copper 

 or Bordeaux mixture. 



Leaf-Rust. — See under Plum. 



Powdery Mildew.— See under Apple. 



Rot and Blight {Monilia fructigena, Pers.). — This is the famil- 

 iar quick rotting of peaches when nearly ripe or after they 

 are picked, and the same fungus causes the blighting of 

 young shoots. It also attacks plums, cherries, apricots, and 

 to a smaller extent apples and pears. 



Prevent iues.— Burn or bury aU affected fruits as soon as 

 they appear. In wet weather, when peaches are rotting 

 badly on the tree, systematic attempts should be made to 

 pick and destroy the injured fruits. Burning or plowing 

 under the leaves in the fall is to be recommended. Before 

 the leaves appear, spray with some copper compound, as 

 sulphate of copper or Bordeaux mixture, and spray there- 

 after several times. These sprays are not specifics, but 

 they appear to hold the disease in check. It is said that har- 

 vested fruit can be preserved for a short time against the 

 fungus by dipping it in a solution of potassium sulphide 

 (liver of sulphur) . 



Yellows.- The first s^nnptom in bearing trees is usually the 

 premature ripening of the fruit. This fruit contains definite 

 small red spots which extend to the pit. The next stage is 

 indicated by very slender shoots, which branch the first 

 year and which start in clumps from the old limbs, bearing 

 narrow and small yellowish leaves. Later the entire foliage 

 becomes smaller and yellow. In three or four years the tree 



