Pythium Leaf Blight / Damping Off

Causal Agent: Pythium spp.

Susceptible Turfgrasses: Cool and warm season turfgrass species.


  • Pythium Leaf Blight appears suddenly during hot, humid weather.

  • Patches occur these patches can enlarge at a rapid rate.

  • In the early morning, grass leaves appear water-soaked and dark in patches.

  • When rubbed between the fingers, these water-soaked patches feel oily.

  • Infected leaves become light tan to brown, shrivelled and matted when dry.

  • When humidity remains high, especially at night, the collapsed leaves become matted and covered with a fluffy white mass of fungal mycelium.

Conditions Favouring Disease

  • Hot days (30-35°C), humid or rainy weather when night temperatures are warm (above 20°C).

  • Relative humidity exceeding 90% for at least 14 hours and a minimum temperature not falling below 20°C.

  • Lush, dense grass growing under high nitrogen fertility is especially susceptible to attack.

  • Turf areas with poor drainage and air circulation.

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Products to Use Pythium Leaf Blight / Damping Off

Segway 400SC Fungicide

Segway www

Segway® 400SC Fungicide from ISK Biosciences is a revolutionary new fungicide, providing Australian turf managers with a reliable new tool in…

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Captan 800 WG

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Controls a broad spectrum of diseases in crops including apples, almonds, grapes, pears, pistachios, stonefruit, strawberries and ornamentals.

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Magellan 800WG

Magellan Bag

A systemic fungicide for the prevention and control of Phytophthora rots in ornamentals and Pythium in turf as specified in the…

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Triumph Fungicide

Adama Fungicide 1Lgeneral

Triumph Fungicide is a targeted Pythium fungicide containing 240 g/L of the active ingredient Metalaxyl-M. It is specifically registered for the control…

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Banflo Fungicide_5L_bottle for web

Ban-Flo is a systemic fungicide for the control of damping-off in ornamental plants, turf and eucalyptus forestry production nurseries caused by…

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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…

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Bayer banol 400x400

Banol Systemic Fungicide is one of the most reliable and proven fungicides for Pythium control. It delivers preventative and curative protection…

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Impala for web

Impala is formulated for broad spectrum control of fungal diseases in turf. The new active constituent triticonazole brings higher efficacy from…

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TMTD 600


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

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Subdue Maxx

SubdueMaxx1L_June2015 rgb

Subdue Maxx is a systemic and residual fungicide providing up to 21 days control, making it ideal for the control of…

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Signature Stressgard

Stressgard new

Signature Stressgard is a true systemic fungicide containing 800 g/L Fosetyl-Al, which travels up and down within the plant. Signature Stressgard…

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Heritage Maxx


Heritage Maxx contains 95g/L azoxystrobin which combines systemic activity through xylem mobility, translaminar movement to encourage multi-site uptake and even distribution…

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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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Fosetyl 800

Fosetyl 800

Fosetyl 800 is a rapidly absorbed fungicide that is taken up by the plants leaves or roots and travels with upwards…

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