Take All Patch

Take-All Patch

Causes

  • Take-All Patch is most commonly found on newly constructed sand based greens/lawns (normally 2-8 years old).
  • Soils with low CEC, poor nitrogen fertility and with a high pH (>6.5) are suitable conditions for Take-All Patch to take hold.
  • Take-All Patch primarily attacks Bent (Agrostis) grasses.
  • Circular patches/rings are created where the Bent has been killed off allowing invasion of weeds grasses, normally Annual Meadow Grass (poa Annua)

Cultural Control

  • Ensure good availability of nutrients in poor nutrient holding soils.
  • Try to reduce pH of soil so that conditions are less favourable to pathogen.
  • Increase biological activity in the new sand environment so that there are more natural antagonists to the pathogen.
  • Manganese (Mn) has be shown to be effective as part of an integrated approach. Apply Step Hi-Mag as a good source of manganese.
  • Check water quality for pH and nutrient levels.
  • Use acidifying feeds such as ammonium sulphate based fertilisers.
  • Avoid organic fertilizer, which tend to increase ph.
  • Avoid potassium nitrate, which increases soil surface pH.
  • Check topdressing ph.

Chemical Control

  • Apply Heritage Maxx (Azoxystrobin). A second application may be required two weeks following the first application.
  • Always add Prestige Super Recovery to each fungicide application.

Use plant protection safely. Always read the label and product information before use

 


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