Microdochium Control
Microdochium patch (Microdochium nivale) (sometimes referred to as Fusarium patch) is problematic from autumn through early-summer in many areas.
Microdochium patch (Microdochium nivale) (sometimes referred to as Fusarium patch) is problematic from autumn through early summer in many areas. Cool and warm season are all sensitive to this disease, especially under wet conditions.
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| Microdochium patch Photo: Frank Wong, Bayer CropScience. |
Microdochium patch Photo: Rob Golembiewski, Bayer CropScience. |
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*Disclaimer: As of 4th Oct 2022, the Environmental Science division of Bayer was divested and transferred to Envu. Note that this content was produced prior to separation. Click here to read more about the divestment.
Cultural management – cannot usually be used in isolation but should maximize control from fungicides:
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Reduce shade and maximize air movement.
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Maximize drainage where possible through frequent top dressing and aerification and improving surface and subsurface drainage where practical.
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Reducing soil pH.
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Maintain moderate but not excess nitrogen on actively growing grasses.
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Iron sulphate applied at 12–24kg per hectare every other week according to recent research in the USA.
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Regular lightweight rolling according to recent research in the USA.
Management with fungicides
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Under high pressure maintain a consistent program of preventative fungicide applications throughout the autumn, winter, and spring. Like with most foliar diseases, limiting inoculum even in the absence of symptoms is critical to maximize long-term control.
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Rotate fungicides with different modes of action to reduce the chances of resistant populations developing. Resistance to fungicides has been reported in Microdochium in the USA.
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Use flat fan nozzles for better spray coverage versus nozzles producing larger droplets, check product label for more details.
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Envu solutions – both Interface® Stressgard and Dedicate® provide effective preventative and curative control.
To find out more information, reach out to our team.
Always read the label before use.
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