Soil organic matter turnover is continuous, occurring at at annual rate of 2-4%.

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Organic residues within the particulate organic carbon fraction provide a labile source of carbon for soil organisms to consume.

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Soil nitrate and ammonium are dynamic; both properties change in response to rainfall and urea application.

00:43

This animation of a simulated model shows the impact of a compacted subsoil layer in the development of a plant root system (right), in comparison to root growth in a soil without compaction (left).

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4 min read

Author(s): Tona Sanchez-Palacios, Richard Bell

Calculator to determine critical levels for soil phosphorus, potassium and sulfur for high rainfall pastures.

Department of Primary Industries and Regional Development

Cation exchange capacity (CEC) of a soil is a measure of the soil’s ability to hold positively charged ions.

Author(s): Frances Hoyle, Daniel Murphy