Growers’ Feedback Sought on Sugarcane Root Systems Demonstration

Sugarcane growers in the Central district are being invited to share their insights as part of a new Sugar Research Australia (SRA) demonstration examining root system differences across sugarcane varieties and what they could mean for crop management.

Interest in root systems has been growing among local growers, particularly around how different varieties establish and perform under varying conditions, sparking a project by Sugar Research Australia Central.

The demonstration forms part of the current District Productivity Plan and aims to capture grower experience with established varieties to help inform the management of newer varieties with similar root characteristics.

The trial began on the 27th of June 2025, with 15 sugarcane varieties collected from SRA plots across the Central district. These included established varieties, recently released varieties and promising clones. Single-eye setts were prepared, germinated under controlled conditions and then transplanted into mesh cylinders within pots to allow detailed observation of root growth.

Over a 90-day period, the plants were monitored under an overhead irrigation system. At the conclusion of the trial, roots were assessed using an internationally recognised method to calculate the Root Growth Angle Index (RGAI), which indicates whether roots tend to grow more vertically or spread laterally. Results from the demonstration were presented to growers and advisors in Proserpine, Te Kowai and Carmila in late 2025.

Feedback to date has been supportive, with growers keen to see the work continue and to contribute their own observations. SRA is now encouraging growers to review the findings and provide feedback on variety management based on their experience, helping to shape future research and practical recommendations online at sugarresearch.com.au.