Plant Disease: An Advanced Treatise

Plant Disease: An Advanced Treatise

How Disease Develops in Populations

1st Edition - August 28, 1978

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  • Editor: James G. Horsfall
  • eBook ISBN: 9780323149679

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Plant Disease An Advanced Treatise, Volume II: How Disease Develops in Populations deals with the epidemiological aspect of disease in population of plants. Comprised of 18 chapters, this volume discusses the comparative anatomy, methods of research, instrumentation, computer simulation, and genetic basis of epidemics. After briefly discussing the sociology of plant pathology, the book presents the comparative anatomy of epidemics in terms of their structure, patterns of development, and dynamics. This volume describes the rational processes of epidemiological research and how they differ from the processes used to investigate disease in individual plants. A chapter examines the instrumentation for measuring the weather component, including temperature, humidity, air movement, and irradiance. Other chapters discuss the measurement of disease on whole living plants; the theory and measurement of inoculum potential; the dispersal of pathogens in both time and space; and the movement and maintenance of infectivity by pathogens that operate below ground. This volume also deals with computer simulators of plant disease and the use of predictive models to forecast epidemics for management decision making. It describes some general patterns of changes in plant-part susceptibility with time for various groups of diseases caused by fungi or viruses. A discussion on the problems of genetic uniformity and susceptibility and the breeding and deployment strategies needed to cope with these problems is included. Other chapters examine the influence of climate and weather on epidemics; the analysis of the geographical and climatic distribution of plants in various parts of the world; and the hazardous practices that have favored epidemics. Lastly, the probabilities of success for quarantines against diseases of various types are provided. This volume is an invaluable source for plant epidemiologists and pathologists, botanists, and researchers.

Table of Contents

  • List of Contributors


    Contents of other Volumes

    Tentative Contents of other Volumes

    Chapter 1 Prologue: How Disease Develops in Populations

    I. Introduction

    II. What is an Epidemic?

    III. The Elements of an Epidemic

    IV. Three Phases of Thinking about Plant Disease

    V. An Overview of the Treatise

    VI. Some Highlights of Volume II


    Chapter 2 Some Epidemics Man Has Known

    I. Impact of Plant Disease Epidemics on War

    II. Impact of War on Plant Disease Epidemics

    III. Impact of Plant Disease Epidemics on Human Culture

    IV. Man Encourages His Own Epidemics

    V. One Epidemic Leads to Another


    Chapter 3 Comparative Anatomy of Epidemics

    I. Comparative Epidemiology

    II. Structures of Epidemics

    III. Pattern of Epidemics

    IV. Dynamics of Epidemics

    V. Epilogue


    Chapter 4 Methodology of Epidemiological Research

    I. Introduction

    II. The Methodology-Technology Interaction in Historical Perspective

    III. The Need for Methodology

    IV. The Tools of the Trade

    V. Formalized Inquisitiveness—The Hypothesis

    VI. The Empirical Cycle

    VII. Facts: How Objective are They?

    VIII. Theory

    IX. Verification and Falsification

    X. Methodological Handholds

    XI. Quantitative Aspects

    XII. The Art of Designing an Experiment

    XIII. Playing with Time

    XIV. Analysis and Synthesis


    Chapter 5 Instrumentation for Epidemiology

    I. Introduction

    II. Importance of Measurement

    III. Measuring Temperature

    IV. Measuring Humidity

    V. Measuring Air Movement

    VI. Measuring Irradiance

    VII. Acquiring Meteorological Data

    Suggested References

    Chapter 6 Pathometry: The Measurement of Plant Disease

    I. Why Measure Disease?

    II. Scope of the Chapter

    III. Our Ignorance is Profound

    IV. Why is our Ignorance so Profound?

    V. The Worm is Turning

    VI. The Parameters to be Measured

    VII. Measuring Intensity by Visual Observation

    VIII. Relating Intensity to Loss

    IX. Where Next?


    Chapter 7 Inoculum Potential

    I. The Concept

    II. The Inoculum

    III. Inoculum and Infections

    IV. The Equation for Inoculum Potential

    V. Applications


    Chapter 8 Dispersal in Time and Space: Aerial Pathogens

    I. Introduction

    II. How Spores are Liberated

    III. How Spores are Transported through the Atmosphere

    IV. How Spores are Deposited

    V. Integration

    VI. Challenges


    Chapter 9 Dispersal in Time and Space: Soil Pathogens

    I. Introduction

    II. The Ecological Significance of Dispersal

    III. The Environment of the Soil Pathogen

    IV. The Mobility of Pathogens in Soil

    V. The Maintenance of Infectivity

    VI. Dispersal above Soil Level

    VII. Conclusions


    Chapter 10 Computer Simulation of Epidemics

    I. Introduction

    II. Using Multiplication and a Limit to Compose Models

    III. Distilling a Model from History

    IV. Micromodels, Environment, and Physiology of Pathogens

    V. Host and Vector

    VI. Conclusion


    Chapter 11 Forecasting of Epidemics

    I. Introduction

    II. The Purpose of Forecasting

    III. Some Early Forecasting Procedures

    IV. Use of Mathematical Models in Forecasting

    V. Analogy with a Road Map

    VI. Preplanting Forecasts

    VII. After-Planting Forecasts

    VIII. Holistic versus Systems Analytic Models

    IX. Forecasting for Farmers


    Chapter 12 Changes in Host Susceptibility with Time

    I. Introduction

    II. Choices and Constraints in Methodology

    III. Susceptibility Changes with Age and Time of Year

    IV. Susceptibility Changes with Time of Day

    V. Conclusions


    Chapter 13 The Genetic Base of Epidemics

    I. Perspective

    II. Genetic Uniformity

    III. The Genetics of Susceptibility

    IV. Choosing Strategies

    V. Conclusions


    Chapter 14 Diseases in Forest Ecosystems: The Importance of Functional Diversity

    I. Introduction

    II. Diversity in Forest Ecosystems

    III. Some Forest Tree Diseases which Exemplify Functional Diversity

    IV. Functional Diversity and Disease Management in Forest Ecosystems


    Chapter 15 Climatic and Weather Influences on Epidemics

    I. Introduction

    II. Influence of Weather Factors on Airborne Pathogens

    III. Habitat of Airborne Diseases

    IV. Habitat of Soil-Borne Diseases

    V. The Hypothesis of Compensation


    Chapter 16 Geophytopathology

    I. Introduction

    II. The Value of Maps

    III. Distribution Patterns of Plant Diseases

    IV. Role of Environment in Distribution Patterns

    V. Planning of Crop Protection


    Chapter 17 Agricultural and Forest Practices that Favor Epidemics

    I. Introduction

    II. Factors that Favor Epidemics

    III. Specific Management Practices that Favor Epidemics

    IV. Conclusions


    Chapter 18 People-Placed Pathogens: The Emigrant Pests

    I. Introduction

    II. Objective of this Chapter

    III. The Arrival of Immigrant Species

    IV. Defining the Threat

    V. Exotic Pests and Diseases

    VI. Quarantine Programs


    Author Index

    Subject Index

Product details

  • No. of pages: 456
  • Language: English
  • Copyright: © Academic Press 1978
  • Published: August 28, 1978
  • Imprint: Academic Press
  • eBook ISBN: 9780323149679

About the Editor

James G. Horsfall

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