Optimizing The Soil Physical Environment Toward Greater Crop Yields

Optimizing The Soil Physical Environment Toward Greater Crop Yields

1st Edition - January 28, 1972

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  • Editor: Daniel Hillel
  • eBook ISBN: 9780323158701

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Description

Optimizing the Soil Physical Environment Toward Greater Crop Yields contains the proceedings of an invitational panel convened during the International Symposium on Soil-Water Physics and Technology held at The Hebrew University Faculty of Agriculture in Rehovot, Israel, August 29 to September 5, 1971. Organized into 13 chapters, this book begins with a discussion on the criteria for determining the aims and direction of research in soil physics and technology. Some chapters deal with the transformation and fluxes of energy and matter in the field, particularly water, soil temperature, soil structure, soil salinity, radiation climate, and nutrient supply and uptake. The book also explores the methods of measuring, managing, and modifying the crop production system to greater agricultural advantage. This book will reflect not only what is known, but also what is missing in the incomplete conception of this environment.

Table of Contents


  • Contributors

    Preface

    Acknowledgements

    Prologue: Soil Physics and Technology: The Tasks before Us

    Criteria for Determining the Aims and Directions of Research in Soil Physics and Technology

    General

    References

    Efficient Management of Water in Agriculture

    Irrigation Development

    Irrigation Efficiency

    Drainage

    Salinity of Soil and Water

    Control of Soil Water

    Management in Relation to the Environment

    References

    Soil Temperature and Crop Growth

    Introduction

    Current State of Theoretical Concepts

    Agronomic Significance of Soil Temperature Regimes

    Relating Crop Response to the Soil Temperature Regime

    Conclusions

    References

    Improving the Water Properties of Sand Soil

    General

    References

    Improvement of Soil Structure by Chemical Means

    Introduction

    Soil Physical Growth Factors

    Modification of Soil Physical Conditions

    Solutions of Polymers as Soil Conditioners

    Emulsions of Polymers as Soil Conditioners

    Application of Soil Conditioning Emulsions in the Field

    Summary and Conclusions

    References

    Root Development in Relation to Soil Physical Conditions

    Introduction

    Root Growth

    Soil Temperature

    Soil Aeration

    Soil Water Status

    Soil Strength

    Interaction of Root Growth Factors

    Conclusions

    References

    The Field Water Balance and Water Use Efficiency

    The Field Water Balance

    Evaluation of the Water Balance

    Water Use Efficiency

    Possibilities of Control

    Need for Overall Control of the Plant Environment

    References

    Control of Soil Salinity

    Effect of Soil Salinity on Plants

    Solute Movement in Soils

    Effect of Soil Salinity on Water Flow

    Estimation of Salt Distribution in the Soil Profile under Fallow Conditions

    Estimation of Salt Distribution in the Soil Profile under Crop Growing Conditions

    Short-Run Soil Salinity Control

    Long-Run Salinity Control

    Economic Approach to Short-Run Salinity Control

    References

    Programming Irrigation for Greater Efficiency

    Introduction

    Alternative Methods of Improving Irrigation Programming

    Irrigation Management Service Requirements

    Meteorological Data Limitations

    Effective Use of Regional Experimental Data

    USDA-ARS-SWC Irrigation-Scheduling Computer Program

    Summary

    References

    Water Utilization by a Dryland Rowcrop

    General

    References

    The Control of the Radiation Climate of Plant Communities

    Introduction

    The Solar Radiation Balance in a Vegetation Stand

    Control of the Diffuse Radiation Climate

    Control of the Radiation Climate for Beam Incidence

    Conclusions

    References

    Nutrient Supply and Uptake in Relation to Soil Physical Conditions

    Introduction

    Nutrient Supply

    Available Forms

    Nutrient Contact with Root Surfaces

    Nutrient Uptake and Use by Plants

    Managing the Soil Physical Condition for Improved Plant Nutrition

    Conclusions

    References

    Analysis of Growth Parameters and Their Fluctuations in Searching for Increased Yields

    The Medium We Work with

    Possible Effects of Fluctuations on Plant Yields

    Multi-Variate Fluctuations

    Net Change in Equilibrium Conditions due to Fluctuations

    Relaxation of Hysteresis

    Increased Apparent Conductivity

    Some Hydrological Conjectures

    Conclusions

    References

    Subject Index


Product details

  • No. of pages: 262
  • Language: English
  • Copyright: © Academic Press 1972
  • Published: January 28, 1972
  • Imprint: Academic Press
  • eBook ISBN: 9780323158701

About the Editor

Daniel Hillel

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