Brown Patch

Causal Agent: Rhizoctonia solani

Susceptible Turfgrasses: Wintergrass, Couch, Bentgrass, Fescues, Kentucky Bluegrass, Ryegrass & Buffalo Grass.


  • Brown discoloured circular patches, from a few centimetres up to a metre in diameter, sometimes with a smoke ring of mycelium around the edges.

  • “ Smoke rings” appear as thin brown borders around the diseased patches appearing in the early morning.

  • Infected leaves are water-soaked and dark, later dying and turning dark brown.

  • After the infected leaves die, new leaves can emerge from the surviving crowns.

  • On wide bladed species, leaf lesions develop with tan centres and dark brown to black margins.

Conditions Favouring Disease

  • High relative humidity and temperatures of over 28°C during the day and over 15.5°C at night.

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

  • Turfgrass species are most affected when night temperatures are consistently above 20°C with high humidity or moisture.

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Products to Use Brown Patch

Evolution Fungicide

Evolution packshot copy

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

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Vantage Fungicide

Amgrow-Vantage-5L_bottle copy

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

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Impala for web

For broad spectrum control of fungal diseases in turf. New active constituent triticonazole brings higher efficacy from the DMI-triazole family. The…

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TMTD 600


60% Thiram TMTD 600 is a flowable form of 600g/L Thiram. TMTD 600 is highly effective in the control of Brown…

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Fore Rainshield

Fore Rainshield pack

48% Mancozeb Fore Rainshield is a broad spectrum protectant fungicide containing 480g/L of the active ingredient Mancozeb formulation offers superior spreading…

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Reserve Stressgard


Reserve™ Stressgard® turf fungicide is a contact and protectant fungicide for the control of fungal diseases in turf.

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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

72% Chlorothalonil Chloronil Pro Fungicide is a broad spectrum, contact or protectant fungicide for the control of a range of diseases…

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NEW Dedicate_1L_Straight_RGB

10% Trifloxystrobin + 20% Tebuconazole Dedicate turf fungicide contains two active ingredients with two different modes of action, providing curative and…

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Shiba Bottle 5L

50% Tolclofos Methyl Shiba Fungicide is a liquid suspendable concentrate of Tolclofos methyl 500g/L, and has been specifically registered for the…

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Instrata 10L bottle

36.2% Chlorothalonil, 5.7% Propiconazole + 1.45% Fludioxanil Instrata is an excellent choice for use in a preventative program or curatively after…

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Headway Maxx


6.2% Azoxystrobin + 1.04% Propiconazole Headway Maxx combines the strength, longevity and broad spectrum of Heritage MAXX with the speed and…

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Daconil Weather Stik


72% Chlorothalonil Daconil Weather Stik is a contact fungicide that can be used in preventative programs. It can be used as…

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Banner Maxx


15.5% Propiconazole Banner Maxx is an excellent choice as an early curative treatment, providing systemic broad spectrum control of major turf…

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