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Edited
by Walter Mahaffee, Sarah Pethybridge, and David H. Gent
Compendium of Hop
Diseases and Pests
is a
comprehensive and authoritative account of diseases and pests of hop as
well as numerous other disorders and injuries that impact this valuable
specialty crop. This compendium is a practical reference for anyone
interested in healthy, high-quality hop, which in addition to brewing, is
showing promise for use in sugar processing and as a preservative in ethanol
production and for its potential use as an antimicrobial additive in animal
feed.
More than 140 color
images are presented with expert scientifically peer-reviewed descriptions
of the identifying characteristics of disease and pest symptoms and their
causal agents. This book also provides an overview of the taxonomy and
botanical traits of the genus Humulus. It provides insight into cone
uses and chemistry, methods for hop production, and an extensive list of hop
cultivars and their characteristics. The description of each disease or pest
includes a general account of its importance and world distribution,
symptoms, causal organism or agent, disease cycle and epidemiology,
management, and selected references. The references document the
descriptions and provide resources for additional information.
Compendium of Hop
Diseases and Pests
assists in the diagnosis of hop diseases and pests in the
field, laboratory, or diagnostic clinic and provides recommendations for
management of hop diseases and pests. This compendium will be useful to
plant pathologists, entomologists, nematologists, crop production
specialists, growers, diagnostic clinicians, students, regulatory agents,
crop consultants, agribusiness representatives, educators, researchers, and
others interested in the recognition or management of hop diseases and pests
throughout the world.
Benefits of Compendium of Hop Diseases and Pests:
•
Visually
identify your problems that affect hop plants or cones with 147 color
photographs of diseases, pests, and other disorders.
•
Coverage on
most diseases and pests affecting hop throughout the world which is helpful
when analyzing a new disease introduced to a specific region
•
A useful
broad reference for home brewers particularly those interested growing their
own hop. This compendium contains sections on hop taxonomy, chemistry, and
production with an extensive listing of hop cultivars and their characters.
•
Identify
growth abnormalities that are not caused by plant pathogens or insects with
expert descriptions and color photographs of symptoms of nutrient disorders
and plant injury.
Contents
PART I: Introduction
The Genus Humulus
Cone Uses and Chemistry
Hop Production
Hop Cultivars and Breeding
PART II:
Infectious/Biotic Diseases
Diseases Caused by Fungi and Oomycetes
Alternaria Cone Disorder
Armillaria Root Rot
Ascochyta Leaf Spot
Black Root Rot
Cone Tip Blight
Downy Mildew
Fusarium Canker
Gray Mold
Powdery Mildew
Red Crown Rot
Septoria Leaf Spot
Sclerotinia Wilt
Sooty Mold
Verticillium Wilt
Fungal Diseases
and Pathogens of Minor Importance
Diseases Caused by Viruses and Viroids
Apple fruit crinkle viroid
Apple mosaic virus
Arabis mosaic virus
Carlaviruses (Hop mosaic, Hop latent, and American hop latent viruses)
Humulus japonicus latent virus
Hop latent viroid
Hop stunt viroid
Viruses of Minor Importance
Diseases Caused by Nematodes
Hop Cyst Nematode
Other Nematodes Associated With Hop
Diseases Caused by
Bacteria and Phytoplasma
Crinkle Disease
Crown Gall
Hop Shoot Proliferation (Phytoplasma)
Bacterial Diseases of Minor Importance
PART III:
Arthropod Pests
California Prionus Beetle
Damson-Hop Aphid
Garden Symphylan
Hop Flea-Beetle
Hop Looper and Other Lepidoptera
Root Weevils
Rosy Rustic Moth
Two-Spotted Spider Mite
Insect Pests of Minor Importance
PART IV:
Post-Harvest Disorders and Diseases
Cone Early
Maturity
PART V:
Non-Infectious Abiotic Disorders
Nutrient Imbalances
Environmental Stress
Chemical Injury
Heptachlor Wilt
Glossary
Index