A Handbook on Mineral Nutrition and Diagnostic Techniques for Nutritional Disorders of Crops (HB)

A Handbook on Mineral Nutrition and Diagnostic Techniques for Nutritional Disorders of Crops (HB)
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A Handbook on Mineral Nutrition and Diagnostic Techniques for Nutritional Disorders of Crops (HB)

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Publisher: Agrobios Publications
ISBN: 9788177543230
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PREFACE
The ability to identify deficiencies of plant nutrients before they limit crop yields is a major need in modern agriculture. The ability requires using a combination of diagnostic methods that enable remedial steps to be taken before the crop yields are severely reduced. Three main methods of diagnosis may be used visual deficiency symptoms, soil analyses and leaf tissue analyses. This book presents vast information on foliar diagnosis for managing the nutritional disorders for most of the important agricultural and horticultural crops. The book is written from a practical stand point, on the description of deficiency symptoms along with colour photographs associated with specific nutrient deficiencies. The other chapters are devoted to present a brief account on mineral nutrition, uptake processes of plant nutrients, their availability in nature and in soil, their role in plant metabolism. A detailed account of macro and micro nutrients and their management strategies are comprehensively discussed on both the underlying theory and practical application. I am grateful to the co-authors in preparing the manuscript of this book. My thanks are due to our Honorable Vice-Chancellor, Tamil Nadu Agricultural University for selection of this book for publication under ICAR Development Grant and for the constant encouragement and guidance given in preparing this book. I am happy to record my sincere thanks to Dr. K. Vanangamudi, Dean Agriculture , for his constant encouragement in bringing out this book. My thanks are due to Dr. R. Chandra Babu, Dean PG Studies for offering valuable suggestion in preparing the manuscript. I am happy to record my appreciation to Dr. S. Natarajan, Director Soil and Crop Management Studies and Dr. P Murugesa Boopathi, Director Planning and Monitoring for continuous monitoring and . guidance given during the course of preparation of this book. I am highly indebted to all my colleagues for their sustained help in bringing out the publication. G.PATHMANABHAN
CONTENTS
INTRODUCTION ................................................................................. 1 MINERAL NUTRITION AND DIAGNOSTIC TECHNIQUES FOR NUTRITIONAL DISORDERS OF CROPS ........................................ 1 Introduction ......................................................................................................................... 1 Nutrient Requirement Of Field Crops ................................................................................... 3 Critical Levels In Soils .......................................................................................................... 6 Micronutrient Deficiency Regions .................................................................................. 6 Micronutrient Research - In Perspective ............................................................................... 7 Secondary Nutrient - Scope In Twentieth Century ............................................................... 8 References ............................................................................................................................ 8
CHAPTER I........................................................................................ 11 HISTORY OF PLANT NUTRITION ...................................................... 11 Progress During The Nineteenth Century .......................................................................... 11
CHAPTER II ...................................................................................... 13 PLANT GROWTH AND YIELD ............................................................ 13 Theories Of Limiting Factors .............................................................................................. 14 Liebig s Law Of The Minimum ..................................................................................... 15 Mitscherlich s Law Of Diminishing Returns ................................................................. 15 Lagatu And Maume ..................................................................................................... 16