The comprehensive book on "Agricultural Economics and Extension" provides an extensive overview of various concepts and theories in a sequential manner. This book is structured into five units, including Agricultural Economics, Agricultural Extension, and Computer Applications.

Each chapter in this book concludes with multiple-choice questions. The Agricultural Economics unit covers topics such as principles of economics, law of diminishing marginal utility, Law of Equi-marginal utility, Indifference curve analysis, Law of demand, consumer's surplus, production factors, supply, Factor-Product relationship, Factor-Factor relationship, Product-Product relationship, Law of Equi-marginal Returns, Cost concepts, Balance sheet, Types of farming systems, Farm budgeting and Depreciation, Agricultural Marketing, market classification, Marketed surplus, Price spread, market integration, and Agricultural Finance.

The Agricultural Extension unit delves into the concepts and importance of Extension Education and Sociology, Rural development programs, and Extension teaching methods. It also covers Communication principles, Cyber Extension, Adoption and Diffusion of Innovation, and Capacity building for Extension personnel, farmers, women, and youth. The Computer Applications unit deals with Input Devices, Output Devices, Memory, Hardware, Software, Classification, Booting, computer Virus, Operating system, DOS commands, Types of files Windows, MS Word, MS Excel, MS PowerPoint, MS Access, Computer Programming, Algorithm, Programming language, BASIC, FORTRAN, C language, and Bioinformatics.

This book is designed to benefit students preparing for various competitive examinations in agricultural and allied sciences.

1. Agricultural Economics, 2. Agricultural Extension, 3. Computers Science