GNGTS 2022 - Atti del 40° Convegno Nazionale

458 GNGTS 2022 Sessione 3.2 At the end of the experiment, the plants were uprooted to analyze and compare the roots vertical distribution of the two species. A good correspondence between the direct observations and those obtained by electrical tomography was observed. Further tests could be carried out during the entire growth period of the plants, allowing the gradual development of the roots to be monitored. In addition, further refinement would ensure the use of this approach in the natural environment, where roots are particularly developed but difficult to access (Beff et al. , 2013). Nevertheless the complexity of the investigated system, in termof interactions between soil moisture, mineralogy and pore water salinity on the electric response, the results demonstrate how the small scale 4D ERT is a promising approach able to non-invasively characterize the root zone, especially in terms of suction regions. References Beff, L., T. Günther, B. Vandoorne, V. Couvreur, and M. Javaux. 2013. Three-dimensional monitoring of soil water content in a maize field using Electrical Resistivity Tomography. Hydrol. Earth Syst. Sci. 17(2): 595–609. doi: 10.5194/hess-17-595-2013. Bertoldi, W., and A.M. Gurnell. 2020. Physical engineering of an island-braided river by two riparian tree species: Evidence from aerial images and airborne lidar. River Res. Appl. 36(7): 1183–1201. doi: 10.1002/RRA.3657. Blanchy, G., S. Saneiyan, J. Boyd, P. McLachlan, and A. Binley. 2020. ResIPy, an intuitive open source software for complex geoelectrical inversion/modeling. Comput. Geosci. 137: 104423. doi: 10.1016/j.cageo.2020.104423. Boaga, J., M. Rossi, and G. Cassiani. 2013. Monitoring Soil-plant Interactions in an Apple Orchard Using 3D Electrical Resistivity Tomography. Procedia Environ. Sci. 19: 394–402. doi: 10.1016/j.proenv.2013.06.045. Ehosioke, S., F. Nguyen, S. Rao, T. Kremer, R.E. Placencia-Gomez, et al. 2020. Sensing the electrical properties of roots: A review. Vadose Zo. J. 19(1). doi: 10.1002/VZJ2.20082. Mary, B., L. Peruzzo, J. Boaga, N. Cenni, M. Schmutz, et al. 2020. Time-lapse monitoring of root water uptake using electrical resistivity tomography and mise-à-la-masse: A vineyard infiltration experiment. SOIL 6(1): 95–114. doi: 10.5194/SOIL-6-95-2020. Vanella, D., G. Cassiani, L. Busato, J. Boaga, S. Barbagallo, et al. 2018. Use of small scale electrical resistivity tomography to identify soil-root interactions during deficit irrigation. J. Hydrol. 556: 310–324. doi: 10.1016/J. JHYDROL.2017.11.025.