Rust Disease
Puccinia spp., Uromyces spp.
Basic Details
Description
Taxonomy
Features
Translations
Basic Details
NameRust Disease
DescriptionRust disease causes distinctive rusty-orange pustules on leaves and stems. Learn to identify symptoms and implement effective organic control strategies.
TypeFungus
FamilyPucciniaceae
GenusPuccinia
Taxonomy & Features
PhylumBasidiomycota
SubphylumPucciniomycotina
ClassPucciniomycetes
OrderPucciniales
Features
- Named for the orange to reddish-brown color of the fungal spores, which look like rust on iron. Caused by a large group of fungi called Pucciniales
- Appearance of small, raised pustules (spots) on the underside of leaves or on stems. Pustules rupture to release powdery orange, yellow, or brown spores
- Obligate parasites that require a living host to grow. They rob the plant of nutrients and disrupt photosynthesis
- Leaves yellow and drop prematurely. Severe infections can stunt plant growth and significantly reduce crop yields and quality
- Spreads via airborne spores. Many rust species have complex lifecycles requiring two different plant hosts to complete their development
- Pustules are typically 1-5 mm. Individual spores are microscopic but visible in mass as 'dust'
- Thrives in moist conditions with high humidity or frequent rainfall. Requires liquid water on the leaf surface for spores to germinate
- Attacks a vast range of plants including wheat, corn, beans, roses, carnations, and many forest trees
- Plant resistant varieties whenever possible. Ensure wide spacing for air circulation and avoid overhead watering to keep leaves dry
- Sulfur-based fungicides or copper sprays are effective. Remove and destroy infected leaves early in the season to prevent spread
Names in Different Languages
Latin / ScientificPuccinia spp., Uromyces spp.
English (Alternate)Fungal rust, Leaf rust
Hindiಗೆರುವಾ ರೋಗ (Gerua rog), ರತುಆ (Ratua)
Tamilತುರು ನೋಯ್ (Thuru noy)
Teluguತುಪ್ಪು ತೆಗುಲು (Thuppu tegulu)
Malayalamತುರುಂಬ್ ರೋಗಂ (Thurumb rogam)
Kannadaತುಕ್ಕು ರೋಗ (Tukku roga)
Sanskritಲೋಹ-ಕಿಟ್ಟ-ರೋಗ (Loha-kitta-roga)
Bengaliಮೊರಿಚಾ ರೋಗ (Moricha rog)
Frenchrouille
Russianರ್ಜಾವ್ಚಿನಾ ರಸ್ಟೆನಿಯ (rzhavchina rasteniy)
Spanishroya
GermanRostpilz
