Training Manual . — Krasnodar, 2011. — 65 s. The book discusses the systematics, origin and distribution of field crops. The main attention is paid to the description of varietal features, their variability and use in approbation. For greater clarity, photos and drawings of the main varietal characteristics of crops are given. The manual is intended for students of biological specialties of higher educational institutions and specialists of agro-industrial complex (agronomes-approbators). Foreword by . Importance, Systematics and Sorting of Major Crops. Wheat . Signs of Varieties. Characteristics of . Barley. Signs of Varieties. Characteristics of . Corn. Signs of Varieties. Characteristics of . Rice. Signs of Varieties. Characteristics of . Soya. Signs of Varieties. Characteristics of . Sunflower. Signs of Varieties. Characteristics of . Unlike another similar file prepared for printing a brochure, this one is more convenient for reading from the screen: the sheets are cut into pages that are arranged in accordance with the numbering.