Abstract
A needle-type water content sensor with a polyethersulfone (PES, poly(4-phenoxy-co-4-benzensulfone)) polymer membrane is proposed for the low-invasive, direct in situ measurement of plant water content (PWC). When the PWC sensor is inserted into a plant, the electrical impedance of PES is determined by the amount of absorbed water, which indicates the PWC. In situ measurement of PWC was successfully demonstrated for a strawberry plant (Fragaria × ananassa) and the application feasibility of the sensor to in situ PWC measurement for irrigation agriculture was verified.
Original language | English |
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Pages (from-to) | 41-45 |
Number of pages | 5 |
Journal | Sensors and Actuators, B: Chemical |
Volume | 154 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2011 May 20 |
Externally published | Yes |
Keywords
- In situ measurement
- Irrigation agriculture
- Plant water content
- Polyethersulfone
- Water content sensor
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry