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.