Ryegrass Integrated Weed Management model

RIM is a hands on, user-friendly decision support tool that allows farmers and advisors to evaluate the long-term cropping profitability of strategic and tactical ryegrass control methods, on the long-term and at the paddock scale. RIM lets you test your ideas: How can you run your ryegrass down and profit up? New rotation? New technique?

Ready to give RIM a go?

Ryegrass RIM

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RIM Scenarios

Below, you’ll find a number of handy done-for-you RIM runs we developed here at AHRI to demonstrate how the Ryegrass Integrated Management (RIM) computer model can be used to put theories to the test.

• Show me the money – early sowing into low seedbank
  Have you ever wondered what it would be like if trifluralin and clethodim (Select®) stopped working?
• Have your cake and eat it – do we need a chemical fallow?
  Do we need chemical fallow in the rotation to smash the ryegrass seed bank?
• Can we make the canola:wheat rotation work?
  Growers should choose the most profitable rotation and throw enough weed management at it to make it work.
• Stacked rotations in the low rainfall zone
  When using double stacked canola rotations, how many cereal crops can you grow before ryegrass numbers blow out?
• Double stacked rotations and chaff lining?
  Can we use a combination of crop competition, topping of TT canola, RR canola and chaff lining to get ryegrass numbers to zero allowing for dry sowing of 2/3 of the programme?
• Length of pasture rotations
  What impact does a pasture phase have in the rotation?
• Ryegrass management, not eradication, in the pasture phase
  Mixed farms with a pasture phase generally don’t want to eradicate ryegrass, they want to manage it.

RIM Instructional Videos

Find out in these 2-minute videos what RIM is all about and how to start using it.

• Overview
  A short presentation of RIM’s features
• Customise your paddock
  How to customise settings to your farm: specify the value of in-built options or define and save your own.
• Build your strategy
  Choose among 50 options to build your rotation, and see the effects in real time on ryegrass and profit.
• Compare your results
  Choose among 50 options to build your rotation, and see the effects in real time on ryegrass and profit.

Rim Instruction Guide

• Click here to download the PDF