Soil Moisture Monitoring – SoilSpec Tensiometer System (Standard Model)
 
The SoilSpec Tensiometer System is a reliable, easy-to-use, and cost-effective soil moisture monitoring tool designed to help growers use water wisely. By measuring the actual moisture tension in the soil, SoilSpec allows you to determine when and how much to irrigate, ensuring optimal water use and improved plant health.

Developed for both research and commercial applications, the SoilSpec system is used extensively by agricultural departments, universities, and the CSIRO. It delivers accurate data that enables informed irrigation decisions, improving yields and maximising profitability with minimal investment.

Effective soil moisture management has been proven to significantly increase productivity, reduce waste, and promote sustainability. With the SoilSpec Tensiometer System, you can achieve higher efficiency and consistency across your irrigation programs.

Soilspec Tensiometer Tubes

The Soilspec Tensiometer Tubes are precision-engineered acrylic or PVC tubes fitted with high-flow ceramic tips that form the foundation of the Soilspec Computer V Soil Moisture Monitoring System. These tubes measure the suction, or tension, with which water is held in the soil—providing a direct physical reading of how much effort plant roots must exert to extract water.

Each tube is filled with degassed water and sealed with a rubber stopper to maintain vacuum integrity. As the soil dries, the ceramic tip draws water from the tube, creating a measurable vacuum that corresponds directly to soil water tension. This simple yet highly accurate design delivers reliable data across all soil types and depths, supporting informed irrigation scheduling and efficient water management.

How It Works

As soil dries, the surrounding soil moisture creates surface tension that pulls water through the porous ceramic tip of the tensiometer. Because the tube is sealed with a rubber stopper, the water cannot escape, generating a measurable suction inside the tube.

A high vacuum or suction reading indicates drier soil, while a low reading shows that the soil is moist.

A complete monitoring setup includes multiple tensiometer tubes at each monitoring site — usually at the top, middle, and bottom of the root zone — allowing you to observe soil moisture movement through different depths (see Figure 1).

This multi-depth monitoring provides a clear understanding of how water moves through the soil profile during and after irrigation, enabling precise scheduling for optimal crop health and yield.

Applications and Benefits

• Suitable for vineyards, orchards, vegetable crops, and broadacre systems
• Provides real-time moisture data to prevent over- or under-watering
• Improves crop yield and quality through optimised irrigation timing
• Environmentally beneficial – conserves water and reduces runoff
• Used by research organisations and growers worldwide
• Simple setup with minimal maintenance requirements

Frequently Asked Questions