Agrochemicals

Fungicide resistance management strategies

  • Powdery mildew
  • Downy mildew
  • Botrytis (bunch rot)

    • Grape downy mildew

     

    Fungicide activity group(s)

    Resistance management strategy

    Group D (phenylamide)

    Group K (strobilurin)

    Group X (dimethomorph)

    		 Start disease control sprays when the vine shoots are approximately 20 cm long and continue spraying at intervals of 7–21 days using a protectant or non-phenylamide fungicide.

     

  • When conditions favour disease development, apply two consecutive sprays of a Group D product. Do NOT apply more than two consecutive sprays of a Group D product. Do NOT apply more than four sprays of a Group D product per season.

     

  • DO NOT apply more than three sprays per season of Group K fungicides. If two or three consecutive applications of Group K fungicides are used, then they must be followed by at least the same number of applications of fungicide(s) from a different group(s), before a Group K fungicide is used again, either in the current or following season.

     

  • DO NOT apply more than three consecutive sprays of a Group X fungicide, and no more than a total of six sprays per season.
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    This information has been kindly provided by Avcare.

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