Date

2020/02/14

Organisations

Department of Primary industries and Regional Development

GRDC

Authors

Wayne Parker

Bindi Isbister

Key messages

  • Deep ripping to the depth of the hardpan in yellow sand, sand-over-gravel duplex soils and gritty grey clay generated positive yield responses for up to four years when paddocks were managed under a controlled traffic farming system.
  • There was no benefit to deep ripping a calcareous loamy earth.
  • Deep ripping in a controlled traffic farming system generated an accumulated return on investment of $1-29/ha over four years depending on depth or the addition of topsoil slotting plates.