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Diseases

Powdery mildew of hop

Humulus lupulus L.

A fungal disease of hop caused by the pathogen Podosphaera macularis, affecting leaves, shoots, and cones with a white powdery coating. It leads to deformation of plant organs, weight loss, and reduced quality characteristics of the raw material.

In the reference 52 varieties crop Common hop, where this is mentioned in the description.

The causative agent is the fungus Podosphaera macularis, which manifests as a superficial powdery coating. Unlike downy mildew, the disease causes deformation and desiccation of hop cones, which critically reduces their value for the brewing industry.

Pathogen populations are characterized by high variability and the presence of physiological races that overcome genetic resistance. Breeding programs utilize R-genes (R1–R6, Rb); however, resistance based on a single dominant gene often proves to be short-lived, necessitating a transition to a polygenic protection strategy.

General information about the subject — on the page Powdery mildew.

Sources8

Varieties of Common hop mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Super Galena

Active

Humulus lupulus L. · Common hop

Roger D Jeske, Joe Brulotte

4 records

Apollo

Active

Humulus lupulus L. · Common hop

Roger D Jeske and Joe Brulotte

4 records

Bravo

Active

Humulus lupulus L. · Common hop

Roger D Jeske, Joe Brulotte

4 records

Hallertauer Taurus

Active

Humulus lupulus L. · Common hop

Franz Gmelch / Herbert Ehrmaier / Dr. Johann Maier in Bayerische Landesanstalt für Bodenkultur und Pflanzenbau,Abschnitt Hopfen

DE HU SI
3 records

Styrian Cardinal

Active

Humulus lupulus L. · Common hop

Slovenian Institute of Hop Research and Brewing

SI
3 records

Styrian Wolf

Active

Humulus lupulus L. · Common hop

Slovenian Institute of Hop Research and Brewing

SI
3 records

Columbus

Active

Humulus lupulus L. · Common hop

Lewis, Gregory K.|Yakima, WA / Zimmermann, Charles E.|Prosser, WA / Hazenberg, Henry|Kennewick, WA (Rule 47)

3 records

First Gold

Active

Humulus lupulus L. · Common hop

Peter Darby

3 records

Pilgrim

Active

Humulus lupulus L. · Common hop

Peter Darby

2 records

Hallertauer Magnum

Protection expired

Humulus lupulus L. · Common hop

Franz Gmelch / Herbert Ehrmaier

DE HU
2 records

Admiral

Active

Humulus lupulus L. · Common hop

Peter Darby

3 records

Summit

Active

Humulus lupulus L. · Common hop

Roger D Jeske

2 records

Lemondrop

Active

Humulus lupulus L. · Common hop

Roger D Jeske

2 records

Polaris

Active

Humulus lupulus L. · Common hop

Anton Lutz^^^Herbert Ehrmaier

2 records

Sultana

Active

Humulus lupulus L. · Common hop

Roger D Jeske

2 records

Herkules

Active

Humulus lupulus L. · Common hop

Herbert Ehrmaier

2 records

Pilot

Active

Humulus lupulus L. · Common hop

Peter Darby

2 records

Styrian Dragon

Active

Humulus lupulus L. · Common hop

Slovenian Institute of Hop Research and Brewing

SI
2 records

Sovereign

Active

Humulus lupulus L. · Common hop

Peter Darby

2 records

Pioneer

Active

Humulus lupulus L. · Common hop

Peter Darby

3 records

Phoenix

Terminated

Humulus lupulus L. · Common hop

Peter Darby

2 records

Bobek

Active

Humulus lupulus L. · Common hop

HR HU SI
3 records