10 DISEASES OF GLASSHOUSE PLANTS 
CHAPTER 
rust of the chrysanthemum ; leaf blight of the chrysan- 
themum ; powdery mildew of the chrysanthemum ; 
leaf spot of the chrysanthemum; downy mildew of 
the rose; leaf blotch of the rose; downy mildew of 
the sweet-pea. Fruit diseases: ‘‘ buckeye’’ rot of 
tomato fruits; rhizoctonia rot of tomato fruits; 
botrytis rot of ‘tomato fruits ; rhizopus rot of tomato 
fruits; penicilliwm and fusarium rots of tomato fruits; 
other rots of tomato fruits.—Gummosis of Cucumber 
Pruits.—General Surface Diseases: Potato blight on 
the tomato; macrosporium disease of the tomato ; 
“‘ nailhead ”’ spot of the tomato. 
VI. DISEASES DUE TO BACTERIA - : - . - 
Wilt Disease of the Cucumber.—Foot rot of the 
Cucumber and Melon.—Angular Leaf Spot of the 
Cucumber.— Stripe ”’ Disease of the Tomato.—Wilt 
Disease of the Tomato.—Grand Rapids’ Disease of the 
Tomato.—A Tomato Canker.—Tomato Fruit Diseases : 
Soft Rot; Brown Rot.—Soft Rot of the Arum. 
VII. MOSAIC DISEASES - - - - = . = . 
General Symptoms of the Disease: Mottling, Abnor- 
mality, Distortion.—Symptoms of Tomato Mosaic 
Disease.—Symptoms of Cucumber Mosaic Disease.— 
Pathological Anatomy of Diseased Plants.—The 
Infectious Nature of the Disease.—Properties of the 
Virus.—Transmission of the Disease.—Cross Inocula- 
tions.—Carrier Plants.—The Effect of Environmental 
Conditions.—The Control] of the Disease.—The Deter- 
mination and Elimination of Infection Centres.—The 
Determination and Elimination of Agents by which the 
Diseases are Spread.—The Determination of Cultural 
Conditions Necessary to Increase the Resistance of 
Susceptible Plants.—The Breeding of Immune Varieties. 
VIII. GENERAL REFLECTIONS AND OQuSIDESA TIONS 
ON DISEASE TREATMENT - * 
Soil and Water Sterilization. —Steam Sterilization : : 
(2) ‘Box and grid’’ method, (6) ‘‘small grid”’ 
method, (ec) ‘‘ tray ’? method, (d) tank method, (e) drain- 
pipe method.—Surface Sterilization with Hot Water.— 
Deep Sterilization with Hot Water.—The Boiler Tray 
Method.—Sterilization by Baking.—Sterilization with 
Cresylic Acid.—Sterilization with Formaldehyde.— 
Sterilization by Drying.—The Effect of Different 
Methods of Soil Sterilization upon Plant Growth.— 
The Effect of Sterilization upon Plant Disease.—Water 
Sterilization. 
IX. GENERAL REFLECTIONS AND CS ae 
ON DISEASE TREATMENT—Continued - 
Spraying and Dusting.—Fungicides. Jie fee “Mix. 
ture.—Burgundy Mixture.—Ammoniacal Copper Car- 
bonate.—Sulphur Fungicides.—Spreaders.—Liver of 
Sulphur and Flour Paste.—Lime Sulphur and Flour 
Paste.—The Process of Spraying.—The Effect of the 
Spray on the Plant.—Soil Fungicides.—Dusting.— 
Breeding.—Selection. —Hybridization. —Conclusions 
(1) Plant hygiene—(a) The elimination of centres of 
infection, (6) cultural methods ; (2) spraying, dusting, 
and sterilization ; (3) resistant varieties. 
APPENDIX - 2 > E ‘ 2 ‘ 
SELECTED BIBLIOGRAPHY - - - “ - 2 
INDEX - : - a 4 . Z 
PAGE 
121 
140 
154 
175 
