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

Barley Scald 393 Rhynchosporium Scald of Triticale 65 Rhynchosporium Scald of Rye 41 Rhynchosporium leaf scald — hybrid ryegrass 5

Found in these crops

Barley 220 Triticale 52 Rye 39 Hybrid ryegrass 5 Cocksfoot 2 Italian ryegrass 2 Italian ryegrass 1 Bread wheat 1 Soybean 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.

Belladonna

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

DE EE FR LT PL

12 records

Aramir

Protection expired

Hordeum vulgare L. · Barley

INNOSEEDS

DK ES FR IT

12 records

SU Bebop

Active

Secale cereale L. · Rye

HYBRO SAATZUCHT GMBH and CO KG

AT CZ DE FI

11 records

Ismena

Active

Hordeum vulgare L. · Barley

Saaten-Union

CZ PL

11 records

LG Zorica

Active

Hordeum vulgare L. · Barley

Limagrain Europe S.A.S. (FR)

AT BG CZ FR HU SK

11 records

KWS Dante

Terminated

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

DE FR NL PL UA

12 records

KWS Antonis

Active

Hordeum vulgare L. · Barley

KWS Lochow GmbH, Bergen DE

AT CZ DE HU PL

9 records

Bojos

Active

Hordeum vulgare L. · Barley

PLANT SELECT, SPOL. S R.O.

AT CZ HU LT SK

11 records

Eifel

Active

Hordeum vulgare L. · Barley

SECOBRA RECHERCHES S.A.S

AT DE FI UA

11 records

KWS Faro

Active

Hordeum vulgare L. · Barley

SARL ADRIEN MOMONT ET FILS, FR

DE FR IT UA

14 records

Orcade

Active

Hordeum vulgare L. · Barley

Nordic Seeds A/S

CZ DE DK FR IE

10 records

Nicoletta

Terminated

Hordeum vulgare L. · Barley

Saatzucht Donau GmbH & Co.KG

AT DE HR LT SI

9 records

Fugato

Protection expired

Secale cereale L. · Rye

HYBRO SAATZUCHT GMBH and CO KG

DE HU LT PL UA

9 records

Koru

Terminated

Hordeum vulgare L. · Barley

Rothwell Plant Breeders

DK ES FR SE

12 records

Amato

Active

Secale cereale L. · Rye

WORTMANN| Dr. H. Wortmann in Fa. Hybro Saatzucht GmbH & Co. KG

AT DE LT PL UA

9 records

Shaloo

Application submitted

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DK EE LT UA

10 records

Organa

Active

Hordeum vulgare L. · Barley

Nordic Seed A-S, DK

CZ DE DK FR

11 records

Pelican

Active

Hordeum vulgare L. · Barley

SAATEN UNION RECHERCHE

BE DE FR PL

14 records

KWS Infinity

Active

Hordeum vulgare L. · Barley

KWS UK LTD

DE FR IE LU

11 records

LG Capitol

Active

Hordeum vulgare L. · Barley

Limagrain Europe S.A.S

CZ DE DK FR

10 records

Georgie

Protection expired

Hordeum vulgare L. · Barley

Rothwell Plant Breeders

DK FR HR IE

10 records

Delibes

Protection expired

Hordeum vulgare L. · Barley

NICKERSON-ADVANTA

DK EE FR NL

11 records

Barcolte

Terminated

Lolium x hybridum Hausskn. · Hybrid ryegrass

Barenbrug Holland BV (NL)

DE ES FR IE

10 records

Bombay

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

DE DK HU PL

10 records

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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.