Causal Agent: Bipolaris spp.

Susceptible Turfgrasses: Warm season turfgrasses.


  • Irregularly shaped brownish green to black lesions may appear.

  • Severely infected leaves begin to die back turning tan to dark brown.

  • Irregularly shaped patches of infected foliage may range from 5cm to 1m in size.

  • Chlorosis may occur in infected foliage before the leaf turns brown.

  • Extensive crown and root rot may occur in severe infections.

  • Plants may lose vigour, becoming weak and flaccid.

Conditions Favouring Disease

  • Foliar blight and lesions occur during cool, wet periods from autumn to spring.

  • Crown and root rots may occur in warm humid weather throughout summer.

  • Possesses a wide temperature range of activity depending on the Bipolaris species.

  • More than 10 hours a day of leaf wetness for several consecutive days.

  • Poor air movement (high humidity in the micro-climate).

  • Excessive nitrogen fertiliser.

  • Excessive thatch and loose leaf clippings provide a source of food for the fungus.

  • Any stress situation such as drought, herbicide injury or heavy traffic can increase the severity of the disease.

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Products to Use Bipolaris

Quali-Pro Evolution Fungicide

Evolution packshot copy

Evolution Fungicide is a premium, fungicide mixture containing 120 g/L of the active ingredient Azoxystrobin and 200 g/L Tebuconazole. This unique…

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Vantage Fungicide

Amgrow-Vantage-5L_bottle copy

Vantage fungicide is a broad spectrum, systemic fungicide containing 95 g/L of the active constituent Azoxystrobin, a trusted chemistry for Australian turf…

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Patchwork bottle

Patchwork is a broad spectrum fungicide containing 250 g/L of the active ingredient Triadimenol. It is specifically registered for the control…

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Fore Rainshield

Fore Rainshield pack

Fore Rainshield is a broad spectrum protectant fungicide containing 480g/L of the active ingredient Mancozeb formulation offers superior spreading and sticking…

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Medallion Turf Fungicide


Medallion Turf Fungicide offers contact plus – exceptional spore busting capabilities on the leaf, in the thatch, and on the soil surface.…

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Chloronil Pro

Chloranil pro v2

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

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Dedicate Turf and Ornamental Fungicide

NEW Dedicate_1L_Straight_RGB

Dedicate turf fungicide contains two active ingredients with two different modes of action, providing curative and preventative control. It has a…

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Instrata 10L bottle

Instrata is an excellent choice for use in a preventative program or curatively after first symptoms are evident. The quick systemic…

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Headway Maxx


Headway Maxx combines the strength, longevity and broad spectrum of Heritage MAXX with the speed and early curative action of Banner…

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Daconil Weather Stik


Daconil Weather Stik is a contact fungicide that can be used in preventative programs. It can be used as an early…

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Banner Maxx


Banner Maxx is an excellent choice as an early curative treatment, providing systemic broad spectrum control of major turf diseases including…

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