A Journey in the Application of Research into Subsoil Manuring in the High Rainfall Zone of Victoria

Robert Binks1, David Watson2

 1Yaloak Estate, 4662 Geelong-Ballan Rd, Ballan, Victoria, rob@yaloakestate.com.au, 
2 Yaloak Estate, 1504 Geelong Rd, Mt Clear, Victoria, davdrwatson0@gmail.com 


Yaloak Estate at Ballan in Victoria’s HRZ began the journey of investigation into how to realize the productive potential of the property 25 years ago. Cropping on raised beds in the 1990’s led to dramatic yield improvements but we still weren’t capturing the full water use potential that our climate could deliver. Wheat crops reliably yielding 8-10t/ha was our goal. Research commenced around 2000 and has been focussed and ongoing ever since. Hostile sodic sub soils were rapidly identified as the major impediment, so the means of ameliorating these became our goal. Subsoil manuring (SSM) using high rates of organic amendments injected into the interface of top soil and subsoil has delivered many of the gains we had hoped for and Yaloak now has the machinery and expertise to do this on a large scale. However, the research journey of understanding the specific subsoil issues within paddock, property and region and how they may be fixed, continues.


The Australian Society of Agronomy is the professional body for agronomists in Australia. It has approximately 500 active members drawn from government, universities, research organisations and the private sector.

Photo Credits

David Marland Photography david_marland@hotmail.com Graham Centre for Agricultural Innovation, Charles Sturt University

Conference Managers

Please contact the team at Conference Design with any questions regarding the conference.

© 2015 - 2019 Conference Design Pty Ltd