Diseases

Phoma rot

Phoma

Phoma rot is a group of fungal diseases manifesting as dry rots, stem necroses, and the appearance of characteristic black pycnidia dots. The disease affects a wide range of crops, causing significant yield losses both in the field and during storage.

Mentioned in descriptions 3 836 varieties reference book.

The disease manifests as the appearance of light brown to dark brown spots on leaves and stems, which can spread and infect the entire plant. Black dots, representing fungal pycnidia, form on the affected tissue areas, while depressed ulcers with a crumbling internal structure form upon infection of root crops and tubers.

The development of the pathogen depends on temperature conditions in the range of +10…+25°C and high air humidity exceeding 70–80%. The infection persists in the soil on plant debris for up to 3–6 years and is also transmitted through infected seeds, tubers, and root crops, which determines a high risk of spread in various climatic zones.

The assessment of variety resistance is carried out within the state variety testing system on specialized plots over several years. In field conditions, specialists conduct a visual scoring of plant infestation, which allows determining varietal responsiveness to the pathogen as an important economic and biological trait.

Varietal resistance to Phoma rot rarely constitutes full immunity and is considered an element of an integrated approach to crop protection. The selection of a resistant variety must be combined with adherence to crop rotation, returning the crop to the same field no earlier than after 3–4 years, and the use of healthy seed material.

Sources10

Breakdown by crop

Phoma stem canker of oilseed rape 529 Phoma black stem of sunflower 479 Phoma stem canker of rapeseed 215 Potato gangrene 12 Phoma Leaf Spot — Table Beet 3 Phoma rot of carrot 3 Phoma stem canker — white mustard 3

Found in these crops

Rapeseed 537 Sunflower 473 Rapeseed 213 Potato 12 Lemon 8 Onion 6 Garden beet 4 White mustard 3 Sugar beet 2 Field mustard 2 Bread wheat 2 Melon 2

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.

Sharan KLP

Terminated

Helianthus annuus L. · Sunflower

Reva IAroslav Mykolaiovych

2 records

Rimi-2/Rimi-2

Active

Helianthus annuus L. · Sunflower

Goran Malidza, Sinisa Jocic, Dragan Skoric,

2 records

Raudis

Terminated

Brassica napus L. · Rapeseed

Kakorin Mykhailo Oleksiiovych, Holubiev Konstiantyn Viktorovych, Parii Myroslav Fedorovych,

2 records

NA Lira

Active

Helianthus annuus L. · Sunflower

Cvejic, Sandra Dusanic, Nenad Jockovic, Milan Miklic, Vladimir Mykhno, Mykola Jocic, Sinisa

2 records

NA Konkord

Active

Helianthus annuus L. · Sunflower

Cvejic, Sandra Dusanic, Nenad Jockovic, Milan Miklic, Vladimir Mykhno, Mykola Jocic, Sinisa

2 records

NA Surinda

Active

Helianthus annuus L. · Sunflower

Cvejic, Sandra Dusanic, Nenad Jockovic, Milan Miklic, Vladimir Mykhno, Mykola Jocic, Sinisa

2 records

Limit

Active

Helianthus annuus L. · Sunflower

Titov Serhii Ivanovych, Burlov Viktor Viktorovych, Burlov Viktor Vasylovych,

2 records

MAGASUN

Active

Helianthus annuus L. · Sunflower

VANDERHAVE RESEARCH

1 record

LHA270/05

Application submitted

Helianthus annuus L. · Sunflower

LIMAGRAIN EUROPE S.A.

1 record

LGR 82

Terminated

Helianthus annuus L. · Sunflower

Limagrain Genetics Grandes Cultures SA (FR)

1 record

LG 56.71 CL

Withdrawn

Helianthus annuus L. · Sunflower

2 records

LG5671HO

Withdrawn

Helianthus annuus L. · Sunflower

LIMAGRAIN VERNEUIL HOLDING S.A.

1 record

LG 55.86

Withdrawn

Helianthus annuus L. · Sunflower

1 record

Liubash

Active

Helianthus annuus L. · Sunflower

Hyskie Ivan Mykolaiovych, Bohdan Ihor` Vyktorovych,

2 records

Lamber

Application submitted

Brassica napus var. napus · Rapeseed

Kalinichenko Artem Oleksandrovych, Didenko Kostiantyn Oleksandrovych,

2 records

Kodru

Active

Helianthus annuus L. · Sunflower

Kucheryava Olena Ivanivna, Hyske Ivan Mykolayovich, Buchuchanu Mikhail Ivanovich,

2 records

Kleopatra

Protection expired

Brassica napus L. · Rapeseed

Sytnyk Ihor Danylovych

2 records

Kan`on

Terminated

Helianthus annuus L. · Sunflower

Dushanich Nened, Shkorych Drahan, Zaitsev Oleksii Borysovych,

2 records

IR-92

Terminated

Helianthus annuus L. · Sunflower

Meszaros Laszlo / Piszker Zoltan / Walcz Ilona / Takacs Laszlo

1 record

GKH 2624

Application submitted

Brassica napus L. · Rapeseed

Balazh Mikloshne, Varha Iozhefne, Nemetkhne Varha Anna, Falushi IAnosh, Falushi IAnoshne,

1 record

FLORIN

Withdrawn

Helianthus annuus L. · Sunflower

EURALIS SEMILLAS, S.A.

1 record

ES Rebella

Withdrawn

Helianthus annuus L. · Sunflower

Euralis Semences FR

1 record

EGH 635

Application submitted

Helianthus annuus L. · Sunflower

Euralis Semences

1 record

Dzhordan

Active

Brassica napus var. napus · Rapeseed

Tovarystvo z obmezhenoiu vidpovidalnistiu «TK ART-AHRO»

2 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.