The main objective of this book is to give an attempt to crystallize the basic knowledge in agricultural economics to all Indian agricultural university. This book covers all the fundamental concepts in agricultural production economics, agricultural marketing, agricultural finance, microeconomics, macroeconomics, farm management, and natural resource economics. This book is a collection of definitions, formulae, conversion tables and simple econometric and mathematical models which is written to use as a quick reference while starting a research work in the field of agricultural economics. The contents in this book will brush-up the knowledge of agricultural research techniques which is applied in this field. For easy convenience the book is furnished in three sections academic/research, under and post-graduate students Contents: Introduction .................................................................................................1 Fundamental of Economics.............................................................3 Production Economics......................................................................9 Macroeconomics..............................................................................13 Farm Management..........................................................................17 Input-Output Relationship............................................................23 Agricultural Market........................................................................27 Agricultural Finance.......................................................................37 Natural Resource Economics ........................................................43 Ecological Economics......................................................................51 Methodology ....................................................................................65 Economic Analysis..........................................................................97 Formulae .........................................................................................109 Land Measurement Conversion Factors...................................129 References.......................................................................................169