It’s an unusual thing to see – a mob of cattle grazing contentedly in a patch of paddock, held there by an invisible border. But virtual fencing technology is really taking offand is showing promise as a tool to help mixed farmers control weeds.

On Heath Nickolls’ cattle and grain property near Pinnaroo in the South Australian mallee, the CSIRO’s Dr Rick Llewellyn is leading a GRDC and Australian Wool Innovation investment trialling virtual fencing to gain better crop integrated weed management. As Rick and Heath explain, a strip grazing trial of 40 Angus heifersis delivering promising results.

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