History and concept of biopesticides. Importance, scope and potential of biopesticide. Definitions, concepts and classification of biopesticides viz. pathogen, botanical pesticides, and biorationales. Mass production technology of bio-pesticides. Virulence, pathogenicity and symptoms of entomopathogenic pathogens and nematodes. Biofertilizers – introduction, status and scope. Structure and characteristic features of bacterial biofertilizers. Mechanism of phosphate solubilization and phosphate mobilization, K solubilization.