SPAC Water Potential
Measurement of the water potential gradient within the Soil, Plant, and Atmosphere Continuum
Measuring soil water potential, the plant demand and response to the available water, and the atmospheric driver (vapour pressure deficit) simultaneously the factors within the relationship can be identified.
ICT International offer a range of solutions for the continuous measurement of water potential within the soil, plant, and atmosphere continuum connected with an IoT-capable datalogger.
Combined with other measurements this data can be used to empower irrigation decisions, species selection for drought, or other measurements in the soil-plant-atmosphere continuum.
Sensor combinations are built around three tiers of products, providing increasingly responsive and accurate solutions, culminating in a system that measures absolute water potential throughout the SPAC.
| Parameter | Tier 1 (Good) Indicative / Observation | Tier 2 (Better) Decision | Tier 3 (Best) Research / Benchmark |
| Soil | Tensiometer | TM7 | TM7 |
| Plant | Dendrometer (DBS/DPS) | Dendrometer (DBS/DPS) | PSY-SDI |
| Atmosphere (VPD) | Vaisala HMP60 | Vaisala HMP110 | Vaisala HMP155 |
| Power system | LP | LP | HP |
| Part Number | SPACWP-T1 | SPACWP-T2 | SPACWP-T3 |
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Any questions?
Email: sales@ictinternational.com.au
Phone: 02 6772 6770 (between 9am to 5pm New South Wales time)
Schedule a meeting with our expertsAbout the SPAC Water Potential systems:
All systems are built upon the ICT International Datalogger, which is optimised for the Dataview data handling platform. Providing an all-in-one datalogger, with power management and data handling, the datalogger platform is expandable with optional communication and sensor expansion modules.
The systems contain all parts required for the installation of the system, enabling the deployment of the system from the box.
Data
The SPAC Water Potential Systems measures the following parameters which can be visualised in the Dataview platform:
| Part Number | SPACWP-T1 | SPACWP-T2 | SPACWP-T3 |
| Soil | MPa of soil water potential | Soil water tension and soil temperature | Soil water tension and soil temperature |
| Plant | Maximum Daily Shrinkage, long-term growth of stem | Maximum Daily Shrinkage, long-term growth of stem | Water potential in MPa |
| Atmosphere (VPD) | Direct measure:
Calculated:
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Direct measure:
Calculated:
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Direct measure:
Calculated:
|
| Power system | 10-Watt solar panel with internal 6,000mAh LiPO4 battery | 10-Watt solar panel with internal 6,000mAh LiPO4 battery | 20-Watt solar panel with internal 13,000mAh LiPO4 battery |
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Case Studies and Application Notes
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