1. Introduction and Importance of Plant Pathology in Agriculture 2. Plant Pathology-The Science 3. History of Plant Pathology 4.Important Plant Pathogenic Organisms 5. The Pathogens- Fungi 6. Taxonomy, Nomenclature and Classification of Fungi 7. Subdivision: Mastigomycotina 8. Subdivision Zygomycotina 9. Subdivision: Ascomycotina 10. Subdivision Basidiomycotina 11. Subdivision : Deuteromycotina 12. Prokaryotes: Classification of Prokaryotes According to Bergeys Manual of Systematic Bacteriology 13. The Pathogens-Bacteria 14. The Pathogens Viruses 15. The Pathogens-Phytoplasmas, Spiroplasma and Fastidious Vascular Bacteria 16. The Pathogens-Viroids, Algae, Protozoa and Prions 17. The Pathogens Nematode 18. The Pathogens-Phanerogamic Parasites 19. Physiological Disorders 20. Basic Terminology and Definitions in Plant Pathology 21. Classification of Plant Diseases 22. General Symptoms of Plant Diseases 23. Dispersal of Pathogens 24. Survival of Plant Pathogens 25. The Infection Process 26. Pathogenesis: Role of Enzymes, Toxins, Growth Regulators and Polysaccharides 27. Plant Defenses 28. Variation in Plant Pathogens 29. Plant Disease Epidemiology 30. Plant Disease Forecasting 31. Principles of Plant Disease Management 32. Physical Management 33. Cultural Management 34. Biological Management 35. Host Plant Resistance 36. Regulatory Methods - Plant Quarantine 37. Chemical in Plant Disease Management 38. Methods of Application of Fungicides 39. Application of Biotechnology in Plant Disease Management 40. Integrated Disease Management