Applications of Three-dimensional Measurement of Soil Water Properties Using Electromagnetic Induction

GRDC - Author: Brendan Griffiths (PCT Agservices), Sally Poole (PCT Agservices), Patrick Filippi (University of Sydney), Leigh Norton (Delta Agribusiness)

Type: Research Paper
Knowledge level: Advanced

Farm Table says:

The authors of this paper note in the conclusion: “The application of spatial survey instruments such as EM is becoming more relevant as we utilise the technology to move towards a more objective measurement of agronomic factors, at field level, such as soil water holding capacity and soil moisture status. A better spatial understanding of the distribution of soil water holding capacity in conjunction with existing technologies such as neutron probes, is allowing for the development of tools to assist in the day to day diagnostic, risk management, and predictive tools at field scale. This allows for vast improvements in the more subjective assessment methods of soil water characteristics historically utilised in field agronomy.”. Please access the full paper via the link below if this research interests you.

The take home messages from this GRDC funded research are below. Please access the full paper via the link below for methodology, references, acknowledgements and discussion.

A large percentage of our work in the PCT Agservices businesses involves the collection and management of spatial GIS data, and applications for the use of that data via management and analytics. Our challenge has been to develop methods of measuring soil physical characteristics that are repeatable and reliable, and accurate to a reasonable degree of confidence, largely revolving around spatial estimation of soil water and subsoil constraints.

Our methodology, whilst still a work-in-progress, is improving as we develop methods that can be utilised in day to day farming operations as diagnostic, risk management, and predictive tools, at field scale.

Figure 2. Spatial surface showing distribution of volumetric soil water

2020 - Australia - GRDC - Author: Brendan Griffiths (PCT Agservices), Sally Poole (PCT Agservices), Patrick Filippi (University of Sydney), Leigh Norton (Delta Agribusiness)
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