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 Mangelwurzel 3 Beet 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.

KWS Meridian

Active

Hordeum vulgare L. · Barley

Lochow-Petkus GmbH (DE)

AT CZ DE DK EE FR +6

25 records

SY Dakoota

Active

Hordeum vulgare L. · Barley

Syngenta Participations,CH

CZ DE FR UA

12 records

Ellinor

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

AT CZ DK EE FI FR +4

27 records

Sonja

Active

Hordeum vulgare L. · Barley

W.ENGELEN

AT CZ DE DK ES FR +4

20 records

Odyssey

Active

Hordeum vulgare L. · Barley

Nickerson International Research SNC (FR)

CZ EE FR LT LU NL +2

21 records

Baikal

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Maribo Seed International ApS, DK

FR GR HR HU NL PL +1

12 records

Cellar

Terminated

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DE EE FR HR LT LV +1

17 records

Signora

Protection expired

Hordeum vulgare L. · Barley

SERASEM| SERASEM (G.I.E. commercial)

AT CZ DE ES FR HU +2

12 records

Auriga

Active

Hordeum vulgare L. · Barley

NORDSAAT SAATZUCHT

DE EE ES FI HU LT +1

16 records

Shuffle

Active

Hordeum vulgare L. · Barley

Syngenta UK Ltd

AT CZ DE FR SK UA

14 records

Isabella

Application submitted

Hordeum vulgare L. · Barley

Sejet Planteforaedling I,S

DK ES FR LT PL UA

17 records

JB Flavour

Active

Hordeum vulgare L. · Barley

Saatzucht Josef Breun GdbR (DE)

CZ DE DK EE FR LT

14 records

KWS Donau

Active

Hordeum vulgare L. · Barley

KWS Lochow, D

AT CZ DE RO UA

17 records

SU Laubella

Active

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft mbH

AT CZ DE FR HU PL

15 records

SU Jule

Active

Hordeum vulgare L. · Barley

W. von Borries-Eckendorf OHG, Leopoldshöhe DE

AT CZ DE HU PL UA

11 records

Bolina

Protection expired

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft m.b.H. (DE)

CZ DE FR LV PL SE +1

11 records

Himalaya

Active

Hordeum vulgare L. · Barley

ULRICH and JOSEF BREUN

DK EE ES FR GR LT

13 records

Teuto

Active

Hordeum vulgare L. · Barley

Secobra Saatzucht

DE DK LU PL UA

12 records

Chariot

Active

Hordeum vulgare L. · Barley

PLANT BREEDING INTERNATIONAL

BE DE DK ES FR IE

17 records

Sydney

Active

Hordeum vulgare L. · Barley

SAATZUCHT STRENG-ENGELEN GMBH&CO. KG

DE EE LT LU PL

10 records

SU Midnight

Active

Hordeum vulgare L. · Barley

W.von Borries-Eckendorf, D

AT CZ DE PL UA

13 records

KWS Morris

Active

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

AT CZ DE FR PL

10 records

Venezia

Active

Hordeum vulgare L. · Barley

Streng Wintergersten GbR

AT CZ DE DK LT PL

12 records

Smart Mondea KWS

Active

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE and CO KGAA

BE DE DK ES LT SE

8 records

1 2 3 4 5 6 7 8 Next

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.