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Diseases

Grape Powdery Mildew

Vitis L.

A fungal disease of grapevines caused by Erysiphe necator. It manifests as a grayish-white coating on all green parts of the plant, causing shoot deformation, leaf necrosis, and berry cracking.

In the reference 110 varieties crop Grapevine, where this is mentioned in the description.

The causative agent of the disease is the fungus Erysiphe necator, which has an ascomycetous stage of development and a conidial stage known as Oidium tuckeri. The pathogen infects leaves, shoots, inflorescences, and berries, forming a characteristic powdery coating composed of mycelium and conidia.

A typical symptom of early infection is the development of 'flag shoots' from infected buds: they exhibit stunted growth, with leaves being deformed, curled, and covered in the coating. Noticeable brown necrotic spots form on the shoots, and affected berries lose the elasticity of their skin, crack, and often expose the seeds.

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

Sources8

Varieties of Grapevine 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.

Sugrasixteen

Active

Vitis L. · Grapevine

SUN WORLD INTERNATIONAL

8 records

Sweet Scarlet

Active

Vitis L. · Grapevine

VI¥A DEL DEPARTAMENTO DE AGRICULTURA DE LOS EEUU DE ACA. EN EL SERVICIO DE INV. AGRICOLA

8 records

Scarlet Royal

Active

Vitis L. · Grapevine

VI¥A DEL DEPARTAMENTO DE AGRICULTURA DE LOS EEUU DE ACA. EN EL SERVICIO DE INV. AGRICOLA

6 records

Summer Royal

Active

Vitis L. · Grapevine

LABORATORIO DE INVESTIGACION DE CULTIVOS HORTICOLAS DEL SERVICIO DE INVESTIGACION AGRICOLA

5 records

Regent

Active

Vitis L. · Grapevine

Gerhardt Alleweldt c/o Institut für Rebenzüchtung

CZ
6 records

Sugratwelve

Application submitted

Vitis L. · Grapevine

Newby, Harry J. Jr.

4 records

Sugraone

Active

Vitis L. · Grapevine

John M. GARABEDIAN (US)

FR
5 records

Sauvignon Rytos

Active

Vitis L. · Grapevine

GUIDO CIPRIANI/GABRIELE DI GASPERO/MICHELE MORGANTE/ENRICO PETERLUNGER/RAFFAELE TESTOLIN/ SIMONE DIEGO CASTELLARIN

ES HU
4 records

Nero

Active

Vitis L. · Grapevine

J. Csizmazia

HU
5 records

Itumone

Active

Vitis L. · Grapevine

Juan Carreño Manuel Tornel

4 records

Itasca

Active

Vitis L. · Grapevine

Peter Hempstad

4 records

Heléna

Active

Vitis L. · Grapevine

R.Gilg et Succ. SA (FR)

FR HU
6 records

Cabernet Eidos

Active

Vitis L. · Grapevine

GUIDO CIPRIANI/GABRIELE DI GASPERO/MICHELE MORGANTE/ENRICO PETERLUNGER/RAFFAELE TESTOLIN/ SIMONE DIEGO CASTELLARIN

ES HU
4 records

Merlot

Active

Vitis L. · Grapevine

CZ HU RO SI
7 records

Pinot gris

Active

Vitis L. · Grapevine

CZ RO SI
11 records

Chardonnay

Active

Vitis L. · Grapevine

CZ HU RO SI
6 records

Semillon

Active

Vitis L. · Grapevine

HU SI
5 records

Kerner

Active

Vitis L. · Grapevine

CZ HU SI
5 records

Italia

Active

Vitis L. · Grapevine

HU SI
7 records

Furmint

Active

Vitis L. · Grapevine

RO SI
6 records

Cardinal

Active

Vitis L. · Grapevine

HU SI
6 records

Viognier

Active

Vitis L. · Grapevine

SI
4 records

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