The modern agriculture has raised several ecological issues, and put a question mark on the sustainability of various agricultural practices with high input use. Since resources on the earth are limited, there is a need to utilise these resources most judiciously and efficiently to harmonise ecology with prosperity. Now the prime focus of farmers, researchers and policymakers goes to sustainable development through the sustainable farming systems. In this context, a subject on 'Farming System and Sustainable Agriculture' has been recommended by the ICAR for the students of agriculture & allied sciences. The present book is written as per the latest syllabus on the subject, which would be useful to the undergraduate students. This book will be helpful to the students preparing for various competitive examinations. The common people who observe farming and its development with an interest would also find it worth reading. Contents: 1. Farming Systems and Their Types 2. Farming System Components and Their Maintenance 3. Cropping Systems and Their Classification 4. Efficiency Evaluation of Cropping Systems 5. Sustainable Agriculture 6. Low External Input and Sustainable Agriculture 7. Conservation Agriculture 8. Integrated Farming Systems