Weed Seed Wizard

Page last updated: Wednesday, 29 September 2021 - 2:21pm

Please note: This content may be out of date and is currently under review.

The Weed Seed Wizard is a national collaborative project which uses paddock management information to predict weed emergence and crop losses now and in the future.

Recent upgrades have been made to the model to improve its performance, make it easier to use and increase the number of weed species that can be used in simulations.


The Weed Seed Wizard is a computer simulation tool which:

  • applies to all Australian grain growing areas
  • helps growers understand and manage weed seedbanks on their farms
  • uses farm management records to simulate how different crop rotations, weed control techniques, irrigation, grazing and harvest management tactics can affect weed numbers, the weed seedbank and yields
  • uses farm-specific management and site-specific weather
  • is multi-species - there are now twenty-five weed species included in the model;
    • annual ryegrass, barley grass, barnyard grass, bell vine, bladder ketmia, brome grasses, button grass, caltrop, cow vine, doublegee, feathertop Rhodes grass, liverseed grass, fleabane, marshmallow, maticaria, paradoxa grass, roly poly, silver grass, sowthistle, stinking lovegrass, sweet summer grass, wild oat, wild radish, windmill grass and wireweed.

It is a collaboration between:

  • Department of Primary Industries and Regional Development
  • Grains Research and Development Corporation
  • University of Western Australia
  • University of Adelaide
  • NSW Department of Primary Industries
  • Queensland Department of Agriculture, Fisheries and Forestry.

Download the Weed Seed Wizard using the button on the right to look at scenarios from around Australia or make your own.

Go to the Weed Seed Wizard download and help page to get download instructions and view the 'Build your own scenario' tutorials and manual.

Download Wizard
Supported on Windows 7/Vista/XP
Version v7.1.7 - 227MB
+ download weather files - 28MB