56 The Horticulturisf s Rule- Book. 



Quince. Leaf-Brownness or Blight {Entomosporium macu- 

 latum, L6v., var. Cydonice, Sacc). — Leaves become spotted 

 and then turn yellow and fall. This disease often causes 

 considerable damage. It is nearly identical with leaf-blight 

 of the pear (which see) . 

 Rust. — See under Apple. 

 Raspberry. Cane-Rust or Anthracnose (Glceosporium necator, 

 E. & E.). — The spots or patches of fungus appear on both the 

 canes and leaves. The disease attacks the base of the canes 

 fii'st and spread upwards. It makes sunken patches on the 

 canes and causes the fruit to dry up. 



Preventive. —Give plants an abundance of light and air by 

 broad planting and high training. 



Remedy. — Spray before the buds swell with sulphate of 

 iron, and follow later with Bordeaux mixture or ammoniacal 

 carbonate of copper. Burn all canes that are past recovery. 

 Red or Orange-Rust (Cceoma luminatum, Link). — Attacks the 

 under surface of the leaves of black and sometimes red rasp- 

 berries, and of blackberries, in patches of whitish yeUow, 

 but the fungus finally covers the whole under sm-face with 

 an orange-red coating. 



Preventive. — Plant such varieties as are least susceptible 

 to attack. Among blackberries, Kit ta tinny is particularly 

 susceptible. 



Remedies. — Burn the plants, roots and branch, as soon as 

 the disease appears. Bordeaux mixture may be tried. 

 Rose. Leaf-Blight or Black-Spot {Actinonema rosa, Fries). 

 — Attacks the full-grown leaves, fli-st appearing as smaU 

 black spots, but later covering nearly or quite the whole sur- 

 face with blotches. The spots have frayed edges. Common 

 in outdoor and house-culture. 



Remedies. — In the house, fumes of sulphur. Outdoors, 

 burn the affected leaves and spray with Bordeax mixture or 

 ammoniacal carbonate of copper. Spraj^ before the leaves 

 unfold. 

 Leaf-Spot {Cercospora roscecola., Pass.). — Black or reddish 

 black spots on the leaves, shading into red at the definite 

 edges. Later the center of the spot becomes light brown or 

 gray. Attacks plants growing outdoors. 



Remedies. — Burn diseased parts. Plant in an aii\v and dry 

 place. Spray with copper fungicides. 



