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Synopsis This book is designed to meet the needs of a standard course in field crops. In this preparation the outline for a standard introductory course in field crops recently adopted by the American Society of Agronomy was followed as closely as practicable. It is thought that a knowledge of the fundamentals underlying the production of all crops is desirable before individual crops are treated. For this reason the first part of the book is devoted to a discussion of such fundamentals. In the production of many crops there are also numerous common practices, such as seedbed preparation, seeding methods, the use of fertilizers, and so forth. Such practices are discussed separately with the hope that the student may apply them in their proper place and thus avoid the necessity of repeating a study of these practices under the several crops. In short, the aim has been to prepare a text with a wide field of usefulness rather than one with a field limited to certain areas. It is expected that the instructor who may use the text will supplement the information contained therein with data directly applicable to his local conditions.