Plant Physiology
ND-ISD Stem Dendrometer
What is the ND-ISD? The ND-ISD is a stem dendrometer for plants and small trees with stem diameter 5–25 mm — measuring growth and water dynamics with 0.002 mm accuracy. Designed for outdoor remote monitoring, irrigation control, field monitoring, smart agriculture and scientific research applications connected to the yDoc ML-525 datalogger.
The ND-ISD is a stem dendrometer for plants and small trees with stem diameter 5–25 mm — measuring growth and water dynamics with 0.002 mm accuracy. Designed for outdoor remote monitoring, irrigation control, field monitoring, smart agriculture and scientific research applications connected to the yDoc ML-525 datalogger.
Key parameters
What the ND-ISD measures
Stem diameter
5–25 mm range — sized for vines, herbaceous plants and small trees
High accuracy
0.002 mm — sub-daily growth and shrink-swell cycle detection
Plant water status
Diurnal stem movements reveal plant water stress in real time
Direct integration
5 m cable to the yDoc ML-525 over SDI-12
Specifications
Technical specifications
Applications
Where the ND-ISD is used
Outdoor remote monitoring
Long-term unattended stem growth and water-stress monitoring in remote field stations.
Irrigation control
Plant-based irrigation triggers from real plant water status, not just soil data.
Field monitoring
Real-time plant performance data across heterogeneous fields and trial plots.
Smart agriculture & research
Crop water-relations studies for breeding, agronomy and crop modelling.
Integration
Powered by the yDoc ML-525 datalogger
The ND-ISD connects directly to the yDoc ML-525 datalogger. The yDoc powers the sensor, schedules measurements, stores readings locally and transmits them to the Sensor-Online platform via 4G/LTE-M, NB-IoT, LoRaWAN, satellite or Ethernet — with up to 10 years of battery life.
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FAQ
Frequently asked questions about the ND-ISD
What does the ND-ISD measure?+
How does it detect water stress?+
How is it mounted?+
Ready to deploy the ND-ISD?
Get a quote, technical advice, or a complete bundle with the yDoc ML-525 datalogger and Sensor-Online platform subscription.