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Diseases

Rhynchosporium

Rhynchosporium

Rhynchosporium is a dangerous fungal disease of barley and rye, manifesting as leaf blotches and leading to premature drying and significant yield losses.

Mentioned in descriptions 1 358 varieties reference book.

Rhynchosporium manifests as the formation of oval or irregular gray, gray-green, or dull green blotches on leaves, leaf sheaths, and occasionally stems and spikes. In barley, the blotches often have a dark brown margin, whereas in rye it may be absent; sporulation may develop on the underside of the leaf, and in cases of severe infection, the leaves dry out.

The development of the pathogen depends on weather conditions, favoring a humid temperate climate with temperatures from +15°C to +20°C and relative humidity above 80%. Risk factors include late sowing dates, high seeding density, weed abundance, excess nitrogen, and the presence of infected crop residues.

Resistance of varieties is often quantitative and determined by a set of loci, however, due to the high variability of the fungus, the resistance status may be lost. The evaluation of varieties is conducted during multi-year field trials using scoring scales or laboratory methods of leaf segment inoculation with the calculation of a resistance index.

Sources10

Breakdown by crop

Found in these crops

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.

Hordeum vulgare L. · Barley

KWS UK LTD

IE
6 records

Kereon

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Florimond Desprez Veuve et Fils, FR

FR
6 records

Gemini

Active

Hordeum vulgare L. · Barley

Apsovsementi S.p.A., CREA-GB

IT
6 records

Frigg

Active

Hordeum vulgare L. · Barley

Sejet Planteforaedling I,S

DK
7 records

Daxor

Active

Hordeum vulgare L. · Barley

SARL ADRIEN MOMONT ET FILS, FR

FR
7 records

Craft

Active

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DE
7 records

Danube

Terminated

Hordeum vulgare L. · Barley

KWS MOMONT SAS

DK
5 records

Bojko

Active

Secale cereale L. · Rye

HODOWLA ROSLIN SMOLICE SP.ZOO

PL
6 records

Trimobe

Active

x Triticosecale Wittm. ex A. Camus · Triticale

SAS Florimond Desprez Veuve & Fils

DE PL
5 records

Panaso

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Danko Hodowla Roslin Sp.z.o.o.

DE PL
6 records

Hordeum vulgare L. · Barley

KWS MOMONT RECHERCHE SARL, FR

FR IT
6 records

Raptus

Active

Hordeum vulgare L. · Barley

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

PL
10 records

Impetus

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Danko Hodowla Roslin Sp.z.o.o.

PL
6 records

Fenice

Active

Hordeum vulgare L. · Barley

Apsovsementi, I

IT
6 records

Dyzma

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Danko Hodowla Roslin Sp.z.o.o.

PL
7 records

Secale cereale L. · Rye

Danko Hodowla Roslin Sp.z.o.o.

PL
6 records

Alastro

Active

Hordeum vulgare L. · Barley

Apsovsementi S.p.A., CREA-GB

IT
5 records

Abava

Active

Hordeum vulgare L. · Barley

TIMULE GENOVEFA YaZEPOVNA / STRUMLE ZEL'MA IVANOVNA / VIKSNE VELTA KARLOVNA / KUDE RAISA MIHAJLOVNA

LV
5 records

Poseidon

Active

Secale cereale L. · Rye

DK EE LT PL
7 records

Lomikar

Active

Lolium multiflorum Lam. · Italian ryegrass

DLF SEEDS A/S| DLF Seeds A/S

DE SK
3 records

Zeglarz

Terminated

Hordeum vulgare L. · Barley

SERASEM

CZ PL
4 records

x Triticosecale Wittm. ex A. Camus · Triticale

LEMAIRE DEFFONTAINES S.A.S.

FR PL
3 records

Vendela

Terminated

Hordeum vulgare L. · Barley

NORDSAAT Saatzucht GmbH Frau Dr. Lissy Kuntze

CZ DE
5 records

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