Crops as Enhancers of Nutrient Use

Crops as Enhancers of Nutrient Use

1st Edition - November 28, 1990

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  • Author: R Duncan
  • eBook ISBN: 9780323145169

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Crops as Enhancers of Nutrient Use examines the various plant and soil factors that contribute to nutrient use efficiency of plants. It attempts to address policies regarding Low Input Sustainable Agriculture (LISA), conservation-oriented cropping systems, and reductions in environmental contaminants. It also presents longer-term remedies to some of the inherent problems of high volume applications of expensive fertilizer nutrients. This book emphasizes plant-soil interaction, particularly, nutritional interactions involving rhizosphere, microbes, and stress on the root system. Stress factors include moisture and low and high pH. The book also covers the genetic and physiological response of plant to nutrients at the cellular level, on a whole-plant basis, and when subjected to stress. This book will contribute to the development of a more cost-effective and judicious nutrient usage of major crops.

Table of Contents

  • Contributors


    Part I Genetic and Physiological Basis of Nutrient Uptake and Use Efficiency

    Chapter 1 Genetics, Breeding, and Physiological Mechanisms of Nutrient Uptake and Use Efficiency: An Overview

    I. Gene Implications

    II. Breeding Techniques

    III. Physiological Mechanisms

    IV. Summary 25


    Chapter 2 Ion Absorption and Utilization: The Cellular Level

    I. Ion Absorption by Roots

    II. Regulation of Ion Uptake

    III. Utilization of Absorbed Nutrients

    IV. Summary


    Chapter 3 Plant Nutrition Relationships at the Whole-Plant Level

    I. Nutritional Variation

    II. Root Effects on Whole-Plant Functioning

    III. Efficient Cultivars: A Whole-Plant Function

    IV Summary


    Chapter 4 Genetics and Breeding of Cereals for Acid Soils and Nutrient Efficiency

    I. Acid Soil Stress

    II. Compatibility of Genetically Controlled Tolerances to Stresses

    III. Role of Genetic Engineering


    Chapter 5 Physiology of Cereals for Mineral Nutrient Uptake, Use, and Efficiency

    I. Definition of Mineral Nutrient Efficiency

    II. Rationale for Improving Plants for Mineral Nutritional Characteristics

    III. Mechanisms for Genotypic Variation in Mineral Nutrients

    IV. Summary


    Chapter 6 Legume Genetics and Breeding for Stress Tolerance and Nutrient Efficiency

    I. Formulation of Goals

    II. Assessment of Stress Factors in the Edaphic Environment and Their Amendability to Resolution through Plant Breeding

    III. Breeding Principles

    IV. Genetic Variability

    V. Inheritance and Heritability

    VI. Acid Soil Stress

    VII. Alkaline Soils

    VIII. Salinity and Other Problems

    IX. Micronutrients

    X. Phosphorus

    XI. Potassium

    XII. Symbiotic Nitrogen Fixation

    XIII. Mycorrhizae and Legumes in Problem Soils

    XIV. Summary


    Chapter 7 Mechanisms Improving Nutrient Use by Crop and Herbage Legumes

    I. Mechanisms Improving Nutrient Uptake

    II. Mechanisms Improving Nutrient Use

    III. Effect of Genotype X Environment Interactions on Improved Nutrient Uptake and Use

    IV. Summary


    Chapter 8 Role of Foliar Fertilization on Plant Nutrition

    I. Overview

    II. Leaf Structure and Components

    III. Efficiency of Foliar Uptake

    IV. Foliar Uptake—Long-Distance Transport

    V Environmental/Physiological Factors Affecting Foliar Uptake

    VI. Fertilizer Use Efficiency

    VII. Summary


    Part II Plant—Soil Interactions in Altering Nutrient Use Efficiency

    Chapter 9 Soil—Plant Interaction on Nutrient Use Efficiency in Plants: An Overview

    I. Plant Factors

    II. Nutritional Factors

    III. Environmental Factors

    IV. Microbial Association

    V. Soil Management

    VI. Summary


    Chapter 10 Root Microbial Interactions and Rhizosphere Nutrient Dynamics

    I. The Rhizosphere Ecosystem

    II. Specific Root Microbial Interactions

    III. Nutrient Availability and Uptake

    IV. Rhizosphere Dynamics, Biological Control, and Emerging Technologies


    Chapter 11 Influence of Root System Morphology and Development on the Need for Fertilizers and the Efficiency of Use

    I. Crop Nutrient Requirements

    II. Root System Characters with Potential for Variation

    III. Root System Morphology and Development

    IV. Variation in Root and Root System Activity

    VI. Root System Activity and Functioning

    VII. Prospects for Modifying Plant Root Systems

    VIII. Conclusions: Possibilities for Improving Nutrient Capture by Modification of the Root System References

    Chapter 12 Role of Moisture Stress in Plant Nutritional Functions

    I. Water and Nutrient Availability

    II. Biological Activity

    III. Management Practices

    IV Conclusions


    Chapter 13 Soil—Plant Nutrient Relationships at Low pH Stress

    I. Growth-Limiting Factors in Acid Soils

    II. Deficiencies and Uptake Efficiencies of Nutrients in Crops

    III. Management of Soil Acidity

    IV Summary


    Chapter 14 Plant Nutrient Interactions in Alkaline and Calcareous Soils

    I. Geography and Character of Arid and Semiarid Region Soils

    II. Alkaline Soils versus Fe Plant Nutrition

    III. Salt-Affected Soils versus Crop Productivity

    IV Summary


    Glossary of Common and Scientific Names of Plants


Product details

  • No. of pages: 588
  • Language: English
  • Copyright: © Academic Press 1990
  • Published: November 28, 1990
  • Imprint: Academic Press
  • eBook ISBN: 9780323145169

About the Author

R Duncan

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