A ground based sensor network for water stress measurement
Centre for Communications and Electronics Research
In this work, a ground based sensing technique is presented to calculate the crop water stress index (CWSI) of plants. CWSI is a measure of the relative transpiration rate of plants, and is used to indicate the plant water stress level. The CWSI measure is a useful tool, which can be used in irrigation system to avoid over and under watering of plants. This work utilizes wireless sensor networks to acquire sensor values from canopies and soil. Based on the acquired sensor data, the CWSI of canopies is estimated, which is then used to drive the irrigation system. The developed system was implemented in a vineyard. Relevant data are presented in the paper to indicate the effectiveness of the developed system.