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

Nobility Systemic Fungicide

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Nobility Systemic Fungicide should be used preventively for the control of Pythium diseases in turf. Nobility Systemic Fungicide is an organic…

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Lexicon Intrinsic Fungicide

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

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Mayfair Fungicide

Mayfair Packshot 5L

Mayfair Fungicide is a Liquid ME (Micro Emulsion) formulation that contains 240 g/L metalaxyl-M. Mayfair Fungicide has excellent protective activity; best…

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Segway 400SC Fungicide

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

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Captan 800 WG

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Captan 800 WG 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

Magellan Fungicide is a targeted oomycete fungicide for the prevention and control of Phytophthora rots in ornamentals and Pythium in turf as specified…

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Triumph Fungicide

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

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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

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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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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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Subdue Maxx

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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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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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