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Diseases

Apple Rust

Malus domestica (Suckow) Borkh.

A fungal disease of apple trees caused by heteroecious pathogens of the genus Gymnosporangium, which require juniper to complete their life cycle. It manifests as characteristic orange spots on leaves and the formation of aecia on their underside.

In the reference 106 varieties crop Apple, where this is mentioned in the description.

The primary causal agent of apple rust (Malus domestica) is the fungus Gymnosporangium tremelloides, which uses common juniper as its primary host. In global practice, the species Gymnosporangium yamadae and Gymnosporangium nidus-avis, which cause similar tissue damage, are also encountered.

Yellow-green circular spots form on the upper side of the apple leaves, which over time acquire a dark orange hue. Cone-shaped aecia form on the underside of the leaf, where spores mature, leading to premature defoliation and a decrease in plant productivity.

General information about the subject — on the page Rust.

Sources8

Varieties of Apple mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Timočanka

Active

Malus domestica (Suckow) Borkh. · Apple

SI
3 records

Mother

Active

Malus domestica (Suckow) Borkh. · Apple

NL
5 records

Novamac

Active

Malus domestica (Suckow) Borkh. · Apple

PL
5 records

Enterprise

Active

Malus domestica (Suckow) Borkh. · Apple

5 records

Crimson Crisp

Active

Malus domestica (Suckow) Borkh. · Apple

Information not available - Contact NL authorities

NL
1 record

PAGSUP

Terminated

Malus domestica (Suckow) Borkh. · Apple

PAGANELLI (US)

FR
1 record

DE SORPE

Application submitted

Malus domestica (Suckow) Borkh. · Apple

ES
1 record

Ben Davis

Active

Malus domestica (Suckow) Borkh. · Apple

1 record

Macoum

Active

Malus domestica (Suckow) Borkh. · Apple

1 record

Macoun

Active

Malus domestica (Suckow) Borkh. · Apple

2 records

DURELLO

Active

Malus domestica (Suckow) Borkh. · Apple

1 record