Diseases

Ramularia leaf spot

Ramularia collo-cygni

Ramularia leaf spot is a fungal disease of barley that manifests as rectangular reddish-brown spots with a chlorotic halo. The disease is characterized by high harmfulness and often occurs in a latent form, complicating visual diagnosis.

Mentioned in descriptions 432 varieties reference book.

Ramularia leaf spot appears as pinpoint necroses and rectangular lesions about 2×0.5 mm in size, which are restricted by leaf veins and are clearly visible on both sides of the leaf blade. The spots have a reddish-brown color with a characteristic yellow chlorotic halo, and sporulation in the form of black dots can develop on the dead tissues.

The development of the pathogen is most intense at temperatures from +15°C to +20°C and high air humidity exceeding 85–95%. The disease usually becomes noticeable in the second half of the growing season, starting from the heading or flowering stage, although primary signs may appear significantly earlier.

The evaluation of variety resistance is carried out using phytopathological monitoring methods with visual assessment of the degree of leaf surface infection. Given the ability of the pathogen to develop as an endophyte and the complexity of diagnosis, PCR methods are used for accurate pathogen identification during variety trials.

Sources10

Breakdown by crop

Ramularia leaf spot of barley 83 Ramularia leaf spot of sugar beet 40 Ramularia leaf spot of fodder beet 3

Found in these crops

Barley 127 Sugar beet 41 Beet 3 Mangelwurzel 3 Garden strawberry 1

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Lavina

Protection expired

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

DE GR HR HU IT UA

8 records

KWS Chilis

Active

Hordeum vulgare L. · Barley

KWS Lochow

AT CZ DE DK EE UA

10 records

KWS Wallace

Active

Hordeum vulgare L. · Barley

KWS Lochow

AT CZ DE EE UA

12 records

Belladonna

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

DE EE FR LT PL

12 records

Baccara

Active

Beta vulgaris Sugar Beet Group · Sugar beet

VANDERHAVE SUGAR BEET SEED

BE ES FR SE UA

11 records

Maaren

Active

Hordeum vulgare L. · Barley

Svalöf Weibull (SE)

EE FI LT LV

10 records

Cerbinetta

Active

Hordeum vulgare L. · Barley

Claus Einfeldt

AT FI SK UA

11 records

Azalea

Active

Hordeum vulgare L. · Barley

Sekobra Recherches

DK FR SI UA

11 records

Finola

Active

Hordeum vulgare L. · Barley

Saatzucht Donau, A

AT HU UA

13 records

LG Caruso

Active

Hordeum vulgare L. · Barley

LIMAGRAIN EUROPE

DE EE FR LT PL

11 records

Lisanna KWS

Active

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

BE DE DK ES NL SE

7 records

Wikingett

Active

Hordeum vulgare L. · Barley

Verneuil Recherche SA (FR)/Svalof Weibull AB (SE)

DK FR NL PL

13 records

Sevilla

Active

Hordeum vulgare L. · Barley

Saatzucht Donau GmbH, Probstdorf AT

AT DE HU PL

10 records

Shaloo

Application submitted

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DK EE LT UA

10 records

Pelican

Active

Hordeum vulgare L. · Barley

SAATEN UNION RECHERCHE

BE DE FR PL

14 records

Cruiser

Terminated

Hordeum vulgare L. · Barley

SAATZUCHT J.BREUN GDBR

DE DK FI LT

9 records

Colonia

Active

Hordeum vulgare L. · Barley

Claus Einfeldt

CZ DE FR PL

8 records

Angus

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Dr. Niels H. Gram

DK FR SE UA

7 records

Fairytale

Active

Hordeum vulgare L. · Barley

Sejet Planteforaedling I,S

DK FI FR

13 records

Bianca

Active

Hordeum vulgare L. · Barley

SAATZUCHT STRENG-ENGELEN GMBH&CO. KG

AT DE DK LU

8 records

Predator

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Stefaan Horemans

CZ HR HU UA

6 records

Smart Alevita KWS

Active

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE and CO KGAA

DE DK LT SE

6 records

SY Zoomba

Active

Hordeum vulgare L. · Barley

Syngenta Crop Protection AG, CH

DE DK FR HR

8 records

RGT Mela

Active

Hordeum vulgare L. · Barley

W. von Borries-Eckendorf GmbH & Co.KG

AT CZ DE PL

7 records

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Diseases

Powdery mildew 33 570
Fusarium wilt and blight 29 887
Viral mosaic diseases 22 022
Downy mildew 16 384
Leaf spot diseases 15 926
Rust 14 859
Verticillium wilt 12 175
Scab 12 064

All terms →

Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.