Modern Principles of Agronomy

Modern Principles of Agronomy
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Modern Principles of Agronomy

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Publisher: Agrobios Publications
ISBN: 9788177546347
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PREFACE India is one among the countries in the region, where food production growth is keeping pace with population growth. There is, however, no room for complacency as the production demands of various commodities require a high annual growth rate of 2.5 to 6 per cent. In the absence of several favourable growth factors which were taken advantage of till now, it will not be available for the farmers of tomorrow. The country will have to achieve the targeted production from less land, with less water, expensive labour and at high energy cost. Negative growth in area under various crops suggesting no scope for horizontal expansion under food crops and limiting eroding resource bases like irrigation water and soil together will make achievement of targeted growth an uphill task. Agronomy is a dynamic discipline. Agronomy's objectives generally have been to achieve maximum yield, operate with a maximum profit, minimise year-to-year instability in production and prevent long-term degradation of the productive capacity of the agricultural system. With the advancement of knowledge and better understanding of the intricate relationship of crop, environment and yield, agronomy has accelerated the pace of food production by new or modified management practices. The achievement in food production in India is, thus attributed to judicious use of production resources by adoption of scientifically sound agronomic practices involving high yielding crops varieties. Several books on agronomy have been written from time to time To some the book may appear to be too technical, and to others it may appear altogether inadequate for their purpose. This book, therefore, has been written in order to make the great wealth of material, so far published, easily available in a concise form. In writing the book, the works of authors quoted and materials of individuals and organisation incorporated are gratefully acknowledged. This book links the scientific principles of agronomy with the practices in a way which should be understandable to students. Although, the author has tried to cover all the materials on or relevant to the subject matter taken up in the book, he believes that omissions are possible. Any suggestion that readers may wish to make in order to improve the book will be greatly appreciated. The author place on record the understanding and inspiration of his wife Kiran and sons Rajnish and Manish. The help rendered by Mukesh Kumar for typing the manuscript with care and devotion is highly appreciated. Ranchi
V. C. Srivastava
CONTENTS 1. Introduction ............................................................................. 1 1.1. Agriculture .................................................................................................................. 1 1.1.2. Definition and Concept .................................................................................. 1 1.1.3. Scope and Importance ................................................................................... 2 1.1.4. History of Agriculture .................................................................................... 3 1.1.5. Development of Scientific Agriculture ........................................................... 7 1.1.6. Scientific Agriculture in India ........................................................................ 8 A. Pre-Independent Era ...................................................................... 8 B. Post-Independent Era ..................................................................... 9 1.2. Agronomy.................................................................................................................. 10 1.2.1. Definition and Scope ................................................................................... 10 1.2.2. Relation of Agronomy to other Sciences ...................................................... 11 1.2.3. Role of Agronomist ...................................................................................... 12 1.3. Sustainable Agriculture ............................................................................................. 12 1.3.1. Definition and Concept ................................................................................ 12