Rust

  • Scientific Name: Puccinnia & Uromyces spp.

Rust

Causal Agent

Puccinnia & Uromyces specie

What is rust disease?

Rust is a fungal turfgrass disease that affects grasses growing under stressful environmental conditions. Rust can appear as yellow to reddish-brown in colour on affected turf, giving the disease its name.

What are the symptoms of rust disease?

Symptoms of rust disease include:

  • Early symptoms of Rust diseases appear as light-yellow flecks on leaves or stems.

  • The flecks enlarge, elongate, and turn yellow in colour.

  • The yellowed area of the infected spots enlarge and elongate parallel to the leaf or stem axis as the infection matures.

  • The leaf blade turns yellow starting at the tip and progressing to the base.

  • A severe infection can cause the shoot to turn yellowish to reddish-brown and slow down growth.

  • As individual plants die, the turf thins

What causes rust?

Rust is caused by Puccinnia & Uromyces fungal species. When grass is affected by rust, the infected areas rise above the epidermis and then rupture, releasing spores that are yellowish-orange to reddish-brown in colour.

What Turfgrasses are particularly susceptible to rust? 

All cool season turfgrass species.

When does rust occur?

The conditions particularly favourable to rust include:

  • Early spring through mid-summer.

  • Rusts favour moist, low-light areas.

  • Leaf wetness is required for fungal growth.

  • Depending on the species, rusts favour temperatures between 18°C and 30°C.

  • Severe Rust infections occur on slow-growing turfgrass particularly those with low nitrogen levels and/or plant water stress.

What can I do to manage or control rust disease?

Turf management practices that can help control or reduce instances of rust disease include:

  • Convert to a turfgrass seed blend that is resistant to rust diseases found in the area.

  • Apply adequate levels of nitrogen and other nutrients.

  • Remove clippings from turf. 

  • Reduce shade and improve air circulation. 

  • Regulate irrigation to minimise the amount of time moisture remains on the leaf surface. 

  • Water deeply and infrequently

For chemical solutions and treatments for rust disease, please see the recommended products below.

PRODUCT SOLUTIONS FOR Rust

Lexicon Intrinsic Fungicide
Active: 167g/L fluxapyroxad, 333g/L pyraclostrobin

Lexicon delivers peak performance under pressure, optimising disease control and providing plants with longer, stronger roots and increased growth....

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Dedicate Forte Stressgard Fungicide
Active: 240g/l Tebuconazole

Dedicate FORTE Stressgard® is a broad-spectrum DMI fungicide containing tebuconazole (240 g/L) with Stressgard Formulation Technology, and control...

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Exteris Stressgard Fungicide
12.5g/l Fluopyram, 12.5g/l Trifloxystrobin

Exteris Stressgard Fungicide provides outstanding broad-spectrum disease control, turf quality and application flexibility. Contains a unique SDHI ...

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Interface Stressgard Fungicide
Active: 256g/L iprodione, 16g/L trifloxystrobin

Interface with Stressgard Formulation Technology offers the new standard in turf protection and is Bayer’s most powerful turf fungicide to-date. ...

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Chloronil Pro Fungicide
Active: 750g/L Chlorothalonil

Chloronil Pro Fungicide is a broad spectrum, contact or protectant fungicide for the control of a range of diseases fruit, vegetables and turf. It ...

Pack:
QTY:
- +
$324.50
Edict Fungicide 100mL
Active: 200g/L Tebuconazole, 100g/L Trifoxystrobin

Edict Disease Control is fungicide for use on Lawns, Azaleas, Roses, other general ornamental gardenplants. Edict Disease Control provides systemic...

Pack:
QTY:
- +
$75.00
Edict Duo Fungicide 1L
Active: 200g/L Tebuconazole, 100g/L Trifloxystrobin

Edict Duo is a broad spectrum fungicide containing the active ingredients Trifloxystrobin (100g/L) and Tebuconazole (200g/L). It is registered for ...

Pack:
QTY:
- +
$375.00
Azoxy 250 T&O Fungicide
Active: 250g/L Azoxystrobin

Azoxy 250 T&O Fungicide (active constituent Azoxystrobin) is an effective xylem systemic fungicide that delivers excellent protection for ...

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Nuturf is a division of Australian Agribusiness (Holdings) Pty Ltd ABN 61 135 355 958

 

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