Forest Practices Code, Province of B.C.

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This Forest Practices Code Guidebook is presented for information only

It is not cited in regulation. The Forest and Range Practices Act and its regulations took effect on Jan. 31, 2004. This replaced the Forest Practices Code of British Columbia Act and regulations. For further information please see the Forest and Range Practices Act.

Root Disease Management Guidebook

July 1995


Authority:

Forest Practices Code of British Columbia Act
Operational Planning Regulation
Silviculture Practices Regulation

Table of Contents

Introduction

Distribution of major root diseases

Host susceptibility and symptomology

Root disease and stand dynamics

Management of root disease

Root disease management process
Landscape level hazard and risk assessment
Prescription walkthrough
Disease assessment and stratification surveys
Future stand risk assessment
Evaluation and final prescription
Disease assessment and stratification survey methods
Procedure intersection length method survey
Procedure sketch mapping survey
Procedure line transect survey
Procedure pixel survey
Procedure intensity measuring pixel survey (IMPS)
Procedure stump top survey
Evaluation and final prescription
Survey methods and threshold levels for prescriptions
Minimum treatment levels by root disease
Treatment methods
Strategies and tactics for silviculture prescriptions
Strategies and tactics for stand management prescriptions

Free growing guidelines

Free growing criteria and assessment

References

Glossary

Appendices

  1. Hazard and risk in the Cariboo Forest Region
  2. Hazard and risk in the Kamloops Forest Region
  3. Root disease hazard in the Nelson Forest Region
  4. Root disease hazard in the Prince George Forest Region
  5. Root disease hazard in the Prince Rupert Forest Region
  6. Root disease hazard in the Vancouver Forest Region

List of figures

  1. Distribution of Armillaria root disease in British Columbia
  2. Distribution of laminated root rot in British Columbia
  3. Distribution of Tomentosus root rot in British Columbia
  4. Distribution of blackstain root disease (Douglas-fir variety) in British Columbia
  5. Distribution of blackstain root disease (pine variety) in British Columbia
  6. Distribution of Annosus root disease in British Columbia
  7. Diagram of root disease management process
  8. The forest health management triangle
  9. Example of pixels
  10. Layout of root disease survey transect lines over a proposed cutblock
  11. Sample diagram of bridge tree removal

List of tables

  1. Root diseases and relative host susceptibility
  2. Signs and symptoms of the major root diseases of B.C.
  3. Modes of root disease infection and spread
  4. Disease incidence and treatment levels by root disease and survey method for silviculture prescriptions
  5. Disease incidence and treatment levels by root disease and survey method for stand management prescriptions
  6. Silviculture prescription strategies and tactics
  7. Site characteristics and constraints checklist for mechanical treatment
  8. Stand management prescription strategies and tactics
  9. Free growing damage standards for root diseases in British Columbia

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