Pythium Root Dysfunction

Causal Agent: Pythium spp.

Susceptible Turfgrasses: Cool and warm season grasses.


  • Affected turf may appear thin, off colour and slow growing.

  • This may occur in small patches or as a general decline and loss of large turfgrass area.

  • Under cool, wet conditions symptoms may first appear as small, diffuse yellow patches of turf 4 to 7cm in diameter.

  • As temperatures rise, large areas of turf may wilt, turn brown and die.

  • In severely infected plants, crowns may appear water-soaked and root systems are greatly reduced in volume and vigour.

  • Roots and crown may be extensively discoloured.

  • No foliar mycelium is evident during infection.

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.

  • Pythium Root Dysfunction occurs in areas with high soil moisture, poor drainage and low light.

  • Areas with low mowing height and excessive wear.

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Products to Use Pythium Root Dysfunction

Signature Xtra Stressgard

Signature Xtra Stressgard logo

Signature Xtra Stressgard is a true systemic fungicide that controls tough turf diseases – pythium and anthracnose, as well as enhancing…

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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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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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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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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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