SALTFREE- Salinization in irrigated areas: risk evaluation and prevention
Partners: IDL-FCiências (Portugal); INRGREF (Tunisia); INIAV(Portugal); ISAFOM-CNR (Italy); PORT SAID UNIVERSITY (Egypt)
The partners have collected EM data and soil samples in order to characterize the different soil in terms of salinity and study its evolution. Some partners developed also
actions with farmers to explain the objectives of the project and show the use of some methods.
Undisturbed soil sampling for hydraulic properties determination in the lab. On the right infiltrometer measurement for deriving hydraulic properties in the field (Italy).
Field measurements and soil sampling (Tunisia)
The graphs in this figure show the spatial evolution of the apparent electrical conductivity (integrated along the whole depth indicated in the curve labels) measured by the CMD sensor along each of the four transects. The labels 1dS, 2dS, 4dS and 6dS refer to the transects irrigated with water at 1, 2, 4 and 6dS/m, respectively. Each line in graph represent the average of measurements carried out along three parallel lines per transect.
The graphs in the left and right vertical panels represent data observed on 17 October 2016 and 23 November 2016, respectively. In the first date, data do not show significant differences among the four transects. By contrast, these differences become apparent on 23 November and for all the antennas configuration (either VCR or HCR) and sensor distances of 0.32, 0.71 and 1.18 m. It should be noted that even in the case of irrigation with 6dS/m saline water, the apparent electrical conductivity became not larger than 0.7dS/m.