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Rust

Phragmidium Mucronatum

Pathogen:

Fungus

Type:

Risk:

INTERMEDIATE

DESCRIPTION

Pathogen description

Rust is a fungal disease that affects a wide variety of plants, including rose bushes. This disease is caused by fungi of the genus Puccinia, which infect the leaves and other tissues of the plant, causing significant damage if not properly controlled.

Disease description

In rose bushes, rust produces a series of characteristic symptoms. These include the appearance of yellow, orange or brown Taches on the leaves of the plant, often accompanied by a fine rust-colored powder on the underside of the leaves. Over time, the Taches can expand and merge, causing defoliation and weakening of the plant.

TEMPERATURE AND HUMIDITY

15°C - 25°C

70% - 90%

VOIES DE TRANSMISSION

Direct contact with infected plants, the spread of spores by wind and rain, and the movement of contaminated plant material.

Chemical treatments

CONTROL

• ORANGE OIL 60g/L [ME] P/S
• DIFENOCONAZOLE 25% [EC] P/V
• TEBUCONAZOLE 0.0125% + TRIFLOXISTROBIN 0.0125% [AL] P/V

Treatments authorized in organic farming

• ORANGE OIL 60g/L [ME] P/S

Biological control

Preventive treatments

• DIFENOCONAZOLE 25% [EC] P/V
• TEBUCONAZOLE 0.0125% + TRIFLOXISTROBIN 0.0125% [AL] P/V

To prevent and control rust in rose bushes, it is important to implement integrated pest management practices. This includes regular pruning of plants to improve air circulation, weed control and removal of infected leaves. Additionally, preventive fungicides can be applied at critical times in the plant's growth cycle.

Recommendations

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*The recommended treatments are recommendations based on the authorities' databases and do not replace in any way the guidelines established by the legislation of each country.