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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.

EMIR

Protection expired

Hordeum vulgare L. · Barley

INNOSEEDS

DK
2 records

Oriana

Terminated

Secale cereale L. · Rye

Skoryk Olena Mykolaivna, Symonenko Nina Viktorivna, Skoryk Volodymyr Viktorovych,

UA
2 records

Moravia

Terminated

Glycine max (L.) Merr. · Soybean

Erik Hahnon

UA
2 records

Kornett

Withdrawn

Hordeum vulgare L. · Barley

Hagberg, Arne

SE
1 record

Ismene

Withdrawn

Hordeum vulgare L. · Barley

NORD| NORDSAAT Agrargesellschaft mit beschraenkter Haftung

DE
1 record

Burrito

Application submitted

x Triticosecale Wittm. ex A. Camus · Triticale

Danko Hodowla Roslin Sp.z.o.o.

PL
1 record

Ananke

Withdrawn

Secale cereale L. · Rye

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

PL
1 record

Leelo

Withdrawn

Hordeum vulgare L. · Barley

EE
1 record

Dnister

Application submitted

Hordeum vulgare L. · Barley

UA
1 record

Secale cereale L. · Rye

DE
1 record

Antonis

Application submitted

Hordeum vulgare L. · Barley

EE
1 record

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