Rose rust is a fungal disease that can infect all parts of a rose plant except the roots and petals. It is caused by a group of fungi in the genus Phragmidium. The most common symptom of rose rust is the appearance of small, yellow or orange pustules on the undersides of leaves. These pustules eventually burst, releasing spores that can spread the disease to other plants.
Environmental favorable factors for pests/Diseases:
- Temperature: 15°C to 30°C (59°F to 86°F)
- Humidity: High, with extended periods of leaf wetness
- Yellow spots on the upper surfaces of leaves, corresponding to the pustules on the lower surface
- Wilting and dropping of infected leaves
- Orange pustules on stems and flowers
- Distortion of stems and flowers
- Stunted growth of the entire plant
| Products | Technical Name | Dosage |
| AZOZOLE | Azoxystrobin 18.2 % + difenoconazole 11.4 % SC | 150-200 ml per Acre |
| COC50 | Copper oxychloride 50 % wp | 2gm/ltr |
| Tyson | Trichoderma Viride Bio Fungicide Powder | 1 – 2KG of Katyayani Trichoderma Viride |
Frequently Asked Questions
Q. What is the rose rust causal organism?
A. The rose rust causal organism is Phragmidium mucronatum, a fungal pathogen that affects rose plants.
Q. What are the symptoms of rose rust disease?
A. Rose rust disease causes yellow spots on leaves, orange pustules on the undersides, and wilting of affected leaves.
Q. What causes rust on rose leaves?
A. Rust on rose leaves is caused by the fungal infection Phragmidium mucronatum.
Q. How to treat rust roses?
A. Rust roses treatment includes using fungicides like Azoxystrobin and Copper oxychloride, along with proper plant care.
Q. How to treat rose rust?
A. To treat rose rust, apply fungicides and remove infected leaves to prevent further spread of the disease.
