+ 8 



The Horticulturist 's Rule-Book. 



Cranberry. Gall-Fungus [SynchytHum vaednU, Thomas) . — Mi- 

 nute red galls or pimples upon the leaves, flowers and stems, 

 causing the parts to become misshapen and dwarfed. 



Remedy. — Burn the infested plants and also wild plants 

 about the bog which are infested. Withholding the water 

 from the bog in winter and spring may subdue it. 

 Scald. — Attacking the fruit early in the season, at first produc- 

 ing a scalded appearance, and later decay. 



Remedies. — Sanding the bog and keeping water off in sum- 

 mer are partial remedies. 

 Cucumber. Mildew (Oidium erysiphoides var. CaeurlDitarum).— 

 A white mold-like mildew which appears in spots upon the 

 leaves of cucumbers, especially under glass. 



Remedies. — Evaporated sulphur. Spray with ammoniacal 

 carbonate of copper. 

 Currant, Rust or Leap-spot (H&ptoria Ribis. Desni.). — Appears 

 about mid-summer, on leaves of white, red and black cur- 

 rants, as whitish spots with black centers. It causes the 

 leaves to fall. 



Remedies. — Destroy infested leaves. Spraying with Bor- 

 deaux mixture and carbonate of copper, as for grape-rot. 



Damping-off. — A term applied to the decay of young seedlings 

 and cuttings at or near the surface of the ground. The 

 trouble is undoubtedly due to a great variety of causes, 

 but it is thought to be cftenest the work of species of 

 fungi of the genus pythium (as Pythium vcxc.ns. P. omnivonim 

 and P. DeBaryanum). It is probably sometimes due to 

 some fungus which exists in the seed, and in such cases — 

 if they could be determined — soaking the seed in carbonate 

 of copper is to be recommended. A confined atmosphere, 

 compact and wet soil, favor damping-off. 



Preventives and Remedies. — Ventilate the cutting or seed- 

 beds, do not let the plants crowd, and do not keep very wet. 

 and keep the soil equally moist throughout its depth. When 

 the trouble appears among valuable plants, the healthy ones 

 should be transplanted into fresh soil. Dusting the soil 

 with sulphur, and sifting upon it and the plants very hot 

 clean sand, are to be recommended. 



Gooseberry.— Mildew (Sphoerothcca Mors-uvce. B. £ C.).— A 



