Part 1. Introduction rnPart 2. The Seedbed As Related To The Problem of The Control of Tobacco Diseases rnPart 3. Chemical Injuries To Tobacco rnPart 4. Weather As a Primary Factor In Tobacco Diseases rnPart 5. Nutritional Diseases of Tobacco rnPart 6. Hereditary Diseases of Tobacco rnPart 7. Diseases of Tobacco Caused By Viruses rnPart 8. Bacterial Diseases of Tobacco rnPart 9. Diseases of The Growing Crop Caused By Fungi rnPart 10. Nematode Induced Diseases of Tobacco rnPart 11. Diseases Caused By Parasitic Flowering Or Seed Plants rnPart 12. Decays of Tobacco Curing Aging and Fermentation Storage and After Manufacture