Contents:– Introduction; History of Plant Pathology; General Concept of Plant Pathology; Symptomatology; Mycoplasma; Viral Diseases; Bacterial Diseases; Destructive Insects of Plants; Protozoa as Plant Pathogens; Plant Parasitic Algae; Angiospermic Plant Parasites; Plant Parasitic Nematodes; Major Diseases of Crop; Post Harvest Diseases; Seed Pathology and Nurcery Diseases; Forest Pathology; Aerobiology; Mycology; Non-parasitic Diseases; Diseases of Medicinal Plants; Disease Management; Stains and Techniques; Instruments and Equipments; Indian Institutes of Plant Pathology; Plant Pathologist of India; Scientific Discoveries; Fungal Diseases of Human beings