TY  - JOUR
AU  - Herrmann, Paulo Sergio de Paul
AU  - Sydoruk, Viktor
AU  - Marques Porto, Felipe Nieves
TI  - Microwave Transmittance Technique Using Microstrip Patch Antennas, as a Non-Invasive Tool to Determine Soil Moisture in Rhizoboxes
JO  - Sensors
VL  - 20
IS  - 4
SN  - 1424-8220
CY  - Basel
PB  - MDPI
M1  - FZJ-2021-00654
SP  - 1166
PY  - 2020
AB  - Investigating the growth behavior of plant root systems as a function of soil water isconsidered an important information for the study of root physiology. A non-invasive tool based onelectromagnetic wave transmittance in the microwave frequency range, operating close to 4.8 GHz,was developed using microstrip patch antennas to determine the volumetric moisture of soil inrhizoboxes. Antennas were placed on both sides of the rhizobox and, using a vector networkanalyzer, measured the S parameters. The dispersion parameter S<sub>21</sub> (dB) was also used to show theeffect of different soil types and temperature on the measurement. In addition, system sensitivity,reproducibility and repeatability were evaluated. The quantitative results of the soil moisture,measured in rhizoboxes, presented in this paper, demonstrate that the microwave technique usingmicrostrip patch antennas is a reliable, non-invasive and accurate system, and has shown potentiallypromising applications for measurement of rhizobox-based root phenotyping.
LB  - PUB:(DE-HGF)16
C6  - 32093329
UR  - <Go to ISI:>//WOS:000522448600217
DO  - DOI:10.3390/s20041166
UR  - https://juser.fz-juelich.de/record/890060
ER  -