This book aims at presenting a number of studies on the subject of organic farming in order to enable the readers to compare results, methods and conclusions. Therefore, studies from different parts of the world have been included in the form of different topics. It is expected that this opportunity to compare results from different countries will give way to a new perspective on the subject, allowing the typical characteristics of organic agriculture and organic food to be understood more clearly. The renowned experts who have contributed in this book have shared their experience and expertise in this book for the benefit of researchers and students from all over the world and to help them in reaching new results in the field of organic agriculture and organic food.