Soil Acidity and Plant Growth

Soil Acidity and Plant Growth

1st Edition - August 25, 1989

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  • Editor: A Robson
  • eBook ISBN: 9780323156226

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Description

Soil Acidity and Plant Growth emerged from concerns over increasing acidification of soils under improved pastures over wide areas of southern Australia. While the book has its origin in the problems of acidification of Australian soils under pastures, the authors examine soil acidity within a much broader framework, making their views relevant to all agricultural and natural ecosystems on acid soils. The book's first two chapters discuss the chemistry of soil acidity and the ecological processes leading to it. This is followed by separate chapters on biological responses to soil acidity, covering mineralization of soil nitrogen, incidence of plant diseases, plant mycorrhizal associations, symbiotic nitrogen fixation in legumes, and genetic variability in plant response to toxicities. The remaining chapters focus on the correction of soil acidity problems by liming. These include studies on the rates of application and effectiveness of liming materials; and the development and use of computer modelling procedures to help researchers identify the effects and interactions of soil pH on component processes and to provide assistance to farmers in the management of long-term subterranean clover pastures.

Table of Contents


  • Contributors

    Acknowledgements

    Foreword

    1. The Chemical Behaviour of Aluminium, Hydrogen and Manganese in Acid Soils

    I. Introduction

    II. Aluminium

    III. Hydrogen

    IV. Manganese

    References

    2. Soil Acidification, its Measurement and the Processes Involved

    I. Introduction

    II. Mechanisms of acidification — a theoretical basis

    III. Measuring rates of acidification

    IV. Rates and mechanisms of acidification observed in one ecosystem

    V. Variation in importance of acidifying factors in different systems

    VI. The distribution of profile acidity

    VII. Conclusion

    References

    3. Symbiotic Nitrogen Fixation and Soil Acidity

    I. Introduction

    II. Legume symbiosis

    III. Practical considerations

    References

    4. The Effect of Soil Acidity on Microbial Activity in Soils

    I. Introduction

    II. The effect of soil acidity on microorganisms involved in chemical transformations in soil

    III. The effect of soil acidity on the interactions between plants and microorganisms

    References

    5. Selection of Genotypes Tolerant of Aluminium and Manganese

    I. Introduction

    II. Toxicity symptoms and tolerance mechanisms

    III. Tolerance and liming

    IV. Breeding for tolerance

    References

    6. Amelioration of Soil Acidity by Liming and Other Amendments

    I. Use of lime in Australian agriculture

    II. Summary of responses to liming in Australia

    III. Factors modifying plant response to lime

    IV. Liming materials and their application

    V. Amelioration of soil acidity without lime

    VI. A philosophy for the treatment of acid soil infertility

    References

    7. The Integration of Data on Lime Use by Modelling

    I. Introduction

    II. The conceptual basis of a crop growth model for acid soils

    III. 'Lime-it' — a simple model of lime use in long-term subterranean clover pastures

    IV. Case study

    V. Sensitivity of 'Lime-it' Predictions to varying input values

    VI. Conclusions

    References

    Index




Product details

  • No. of pages: 318
  • Language: English
  • Copyright: © Academic Press 1989
  • Published: August 25, 1989
  • Imprint: Academic Press
  • eBook ISBN: 9780323156226

About the Editor

A Robson

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