Abstract:

To determine of plant water content on-line, a sensor, hydraulic, BD-Ⅱ sensor based on SWR (Standing-Wave Ratio) measurement principle was developed. To evaluate the feasibility of the proposed technique, a comparative experiment between the developed sensor (BD-Ⅱ sensor) and a already established SF-L (SF Type Sap Flow Systems, Germany) was conducted over the past two years. The experimental results obtained from both instruments showed a good agreement (R²=0.76). Therefore, the proposed technique is a promising tool in dynamically monitoring plant stem water.

Key words: plant water content, measure, sensor