Diseases

Septoria leaf blotch

Septoria

Septoria leaf blotch is a complex fungal disease of cereal crops, manifesting as leaf and glume blotch, leading to tissue necrosis and yield reduction.

Mentioned in descriptions 4 644 varieties reference book.

The disease is caused by fungi of the genus Septoria and related species, which infect all above-ground parts of plants. Light beige or grey-brown spots form on leaves and stems, and black dots, known as pycnidia, develop on their surface over time. The disease is dangerous in temperate climates with high humidity and frequent rainfall.

Pathogen development depends on weather factors, particularly temperatures in the range of +15…+25 °C and air humidity above 80%. The disease leads to a reduction in the photosynthetic area, grain shriveling, and a decline in baking quality. The level of loss varies from 10–15% in normal years to 50% during epiphytotics.

Varietal resistance is divided into vertical, based on specific Stb genes, and horizontal, which is considered more long-lasting. Horizontal resistance is determined by morphological characteristics: cuticle density, pubescence, the presence of a waxy bloom, and lack of sensitivity to fungal toxins.

Resistance evaluation in variety trials is conducted using infectious-provocative backgrounds, visual assessment of the degree of infection, and laboratory methods, including molecular diagnostics. The obtained data are compared with reference indicators to determine the effectiveness of variety protection under specific conditions.

Sources10

Breakdown by crop

Found in these crops

Bread wheat 933 Triticale 143 Durum wheat 127 Oat 30 Rye 26 Celeriac 25 Sunflower 23 Soybean 22 Gooseberry 21 Barley 20 Spelt 16 Blackcurrant 16

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.

Triagent

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Saatzucht Donau GmbH & Co.KG

AT CZ HR LT UA

11 records

RGT Kilimanjaro

Active

Triticum aestivum L. · Bread wheat

RAGT 2N S.A.S

FI FR LT PL

11 records

Moschus

Active

Triticum aestivum L. · Bread wheat

Strube-Dieckmann GmbH&Co.KG

EE LU PL UA

11 records

Lupus

Active

x Triticosecale Wittm. ex A. Camus · Triticale

NORDSAAT Saatzuchtgesellschaft mit beschränkter Haftung Herrn Dr. Ralf Schachschneider

CZ DE EE FR LT

12 records

KWS Dacanto

Protection expired

Triticum aestivum L. · Bread wheat

KWS Lochow

BE DK LT PL

8 records

Granus

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH&Co KG

EE LT PL UA

8 records

Champion

Active

Triticum aestivum L. · Bread wheat

Florimond Desprez Veuve et Fils, FR

DK FR IE NL

13 records

Bakfis

Active

Triticum aestivum L. · Bread wheat

RAGT Czech s.r.o.,CZ

HR HU LT SK

9 records

Drifter

Active

Triticum aestivum L. · Bread wheat

TAYLOR MIKE

AT BE NL

12 records

Trigold

Protection expired

x Triticosecale Wittm. ex A. Camus · Triticale

Lochow-Petkus GmbH (DE)

CZ DE FR PL

11 records

Trimester

Active

x Triticosecale Wittm. ex A. Camus · Triticale

LOCHOW-PETKUS

DE DK HR LT

12 records

Securo

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Saka Pflanzenzucht GmbH Co KG

AT CZ DE PL

9 records

Mamut

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Danko Hodowla Roslin Sp.z.o.o.

CZ DE EE PL

12 records

Matthus

Active

Triticum aestivum L. · Bread wheat

STRUBE GMBH&CO.KG

HU LT UA

8 records

KWS Extase

Active

Triticum aestivum L. · Bread wheat

SARL ADRIEN MOMONT ET FILS, FR

DK FR LU NL

13 records

Kargo

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Kazimierz Paizert, Walenty Mackowiak, Grzegorz Milewski,

CZ LT PL UA

9 records

Iridium

Active

Triticum aestivum L. · Bread wheat

SARL ADRIEN MOMONT ET FILS, FR

FR LT SK

9 records

Durofinus

Active

Triticum durum Desf. · Durum wheat

Saatzucht Donau GmbH & Co.KG

AT FR IT UA

12 records

Celebrity

Active

Triticum aestivum L. · Bread wheat

SAS Florimond Desprez Veuve & Fils

ES FR LT UA

13 records

Azimut

Active

Triticum aestivum L. · Bread wheat

STRAGLIATI, Jayne, FR

BG FR HR RO

11 records

RGT Borsalino

Active

Triticum aestivum L. · Bread wheat

RAGT 2n

ES FR IT

11 records

Solveig

Active

Triticum aestivum L. · Bread wheat

Caussade Semences, F

FR IT

11 records

Levante

Active

Triticum durum Desf. · Durum wheat

SOCIETA PRODUTTORI SEMENTI S.P.A, IT

BG IT UA

11 records

Graham

Active

Triticum aestivum L. · Bread wheat

Syngenta UK Ltd

FR IE NL

11 records

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Diseases

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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.