Compendium of Rhododendron and Azalea Diseases and Pests, Second Edition
Author: Robert G. Linderman, D. Michael Benson
“Compendium” is defined as “a collection of concise but detailed information about a particular subject.” Commercial growers, gardeners, and plant scientists alike will find that the Compendium of Rhododendron and Azalea Diseases and Pests, Second Edition, fits this definition perfectly.
This comprehensive book does more than provide the most current disease and pest information for commercial and non-commercial growers throughout the world. It provides it in a simple, easy-to-use format that helps readers quickly recognize and control pest-related problems of these valuable and beautiful plants.
The Compendium of Rhododendron and Azalea Diseases and Pests, Second Edition is an essential tool for gardeners, commercial growers, consultants, and others who cultivate these plants in commercial nurseries, home gardens, park and municipal landscapes, and similar settings. It is also a useful reference for students, plant scientists, and extension experts working in entomology, plant pathology, horticulture, nematology, and related disciplines.
Symptom diagnosis is improved through a new collection of more than 170 color photos throughout the book and an easy-to-use symptoms-based diagnostic guide.
Management strategies are cover various production systems used throughout the world and are segmented by geography and environment.
Editors Robert G. Linderman and D. Michael Benson, both rhododendron and azalea experts in their own right, selected top authorities on rhododendron and azalea diseases and insects to write this new edition. These contributors offer important new and updated information since the first edition of this book was published in 1986:
• Part I, titled Diseases Caused by Infectious Agents, addresses commonly occurring diseases caused by fungi, bacteria, viruses, higher plants, nematodes, and algae. A new section on virus diseases has been updated to include azalea ringspot disease, Rhododendron virus N, and Rhododendron virus A and related viruses.
• Part II, Diseases Caused by Noninfectious Agents, discusses damage caused by moisture, heat, and cold stress, as well as mineral deficiencies and toxicities, air pollution, and pesticide phytotoxicities. A new section on noninfectious agents covers genetic abnormalities, including tissue proliferation and witches’-broom.
• Part III, Disease and Pest Management, provides a thorough discussion of management strategies, such as exclusion, eradication, quarantine, sanitation, irrigation water treatment, chemical control, host resistance, and cultural practices. A new section, called “Biology and Application of Beneficial Microbes,” presents much of the latest thinking and research on a range of crops (not limited to rhododendron and azalea) and highlights new nonchemical approaches to disease and pest management.
• Part IV, Insect and Mite Pests, includes nearly 40 color photos and provides detailed treatments of the full range of pests that affect rhododendron and azalea. The section on pest management has been expanded and includes a table that identifies the insecticides and miticides used to manage these pests.
A comprehensive index, an appendix that presents an updated list of common plant disease names for rhododendron and azalea, and a glossary of terms, including new terms not covered in the book’s first edition, are provided as well.
Contents
Introduction
Background
Propagation
Transplant and Transport
Best Management Practices
Impact of Plant Stress on Disease
Extent of Root Infections
Quick Guide to Diagnosis Based on Symptoms
Part I. Diseases Caused by Infectious Agents
Diseases Caused by Fungi
Phytophthora Root Rot
Armillaria Root Rot
Phymatotrichopsis Root Rot
Pythium Damping-Off and Root Rot
Rhizoctonia Damping-Off and Root Rot
Rhizoctonia Web Blight
Botryosphaeria Dieback
Phomopsis Dieback
Phytophthora Dieback
Cylindrocladium Blight and Wilt
Other Twig Blights
Leaf and Flower Gall
Ovulinia Petal Blight
Powdery Mildew
Leaf Spots
Rusts
Diseases Caused by Bacteria
Crown Gall
Diseases Caused by Viruses
Rhododendron necrotic ringspot virus
Mosaic and Leaf Spots
Azalea Ringspot Disease
Rhododendron virus A and Related Viruses
Rhododendron virus N
Diseases Caused by Higher Plants
Dodder
Diseases Caused by Nematodes
Diseases Caused by Algae
Algal Leaf Spot and Stem Infection
Part II. Diseases Caused by Noninfectious Agents
Moisture Stress, Heat Injury, and Winter Injury
Nutrient Deficiencies and Toxicities
Nutrient Deficiencies
Nutrient Toxicities
Air Pollution Injury
General Diagnosis and Symptoms of Injury
Specific Causes and Symptoms of Injury
Management of Injuries
Pesticide Phytotoxicities
Genetic Abnormalities
Tissue Proliferation
Witches’-Broom
Part III. Disease and Pest Management
Overview of Management Strategies
Exclusion, Eradication, and Quarantine Regulations
Asia
Europe
North America
Oceania
Other Countries
Sanitation
Plant Materials
Containers, Media, and Tools
Management of Plant Pathogens in Irrigation Water
Developing a Facility and Production Plan
Selecting a Water Treatment Technology
Chemical Control
Preventive Fungicide Applications
Chemical Control of Diseases in the Landscape
Mode of Action Groups and FRAC Codes
New FRAC Codes
Biology and Application of Beneficial Microbes
Fungal and Bacterial Biocontrol Agents and Growth Stimulators
Entomopathogens as Insect Biocontrol Agents
Suppressive Soils, Composts, and Compost Teas
Root Fungal Endophytes (Mycorrhizae)
Host Resistance
Cultural Practices
Part IV. Insect and Mite Pests
Black Vine and Other Weevils
Rhododendron Borer
Scale Insects and Relatives
Aphids
Scale Insects
Whiteflies
Lace Bugs, Rhododendron Tip Midge, and Rootworms
Lace Bugs
Rhododendron Tip Midge
Strawberry Rootworm
Cranberry Rootworm
Thrips
Greenhouse Thrips
Other Thrips Species
Mites
Southern Red Mite
Two-Spotted Spider Mite
Broad Mite
Other Mite Species
Caterpillars, Climbing Cutworms, and Leafminer
Azalea Caterpillar
Climbing Cutworms
Azalea Leafminer
Pest Management
Implementing an Integrated Pest Management Program
Pesticides
Biological Control
Appendixes
Diseases of Rhododendron
Diseases of Azalea
Glossary
Index
