Sandy Soils: Driving Progress Through Engagement

The Grains Research and Development Corporation (GRDC) is utilizing a collaborative engagement model to advance the productivity and resilience of sandy soils, specifically targeting the constraints associated with arable sands in southeastern Australia.

This effort is part of a broader strategy to address the challenges of the southern cropping region, where more than 9 million hectares of arable sands are located. These soils often present significant constraints that limit crop establishment and yield, necessitating targeted soil testing and amelioration techniques.

Technical Approaches to Soil Amelioration

The GRDC’s approach focuses on the economic response of long-term soil amelioration strategies. This includes the use of advanced soil testing to guide the application of ameliorants, which are materials added to the soil to improve its physical or chemical properties.

Key technical components of these initiatives include:

• Targeted Soil Testing: Using precision data to identify specific soil constraints and determine the most effective amelioration requirements.
• Amelioration Techniques: Implementing strategies to overcome soil repellency and improve water infiltration.
• High-Value Break Crops: Integrating the adoption of higher-value break crops, such as lentils and beans, to improve soil function and overall farm profitability.

research has explored the use of ripping in deep sandy soils, particularly within the low-rainfall Mallee region, to break through compacted layers and improve root penetration.

Collaborative Research and ‘Moonshot’ Investments

To accelerate progress, the GRDC has implemented a ground up approach to research, emphasizing the importance of grower engagement in the discovery and implementation process. This model ensures that scientific research is aligned with the practical needs of farmers.

The organization has also pursued what it describes as moonshot investments. These high-impact projects are designed to track soil amelioration over extended periods of time and across diverse spatial areas, providing a more comprehensive understanding of how different strategies perform in real-world conditions.

By tracking these variables, researchers can identify the key profit levers that make soil amelioration economically viable for growers, balancing the high initial cost of soil amendments with the long-term increase in crop yields.

Industry Impact and Future Outlook

The integration of these technologies and research methods aims to transform sandy soils from marginal land into high-performing agricultural assets. The focus remains on amplifying the impact of amelioration by combining technical data with grower-led insights.

As of May 2026, the GRDC continues to evaluate the economic responses to these long-term strategies, focusing on the synergy between soil health improvements and the financial sustainability of cropping operations in sandy regions.