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Specific field campaigns were performed in order to characterize soil properties. Soil water retention curve parameters for Livraga and Secugnago are reported in Table 1. Sampling points were selected randomly within both study sites. Samples were collected from different depths. The parameters presented in Table 1 are average values. Particle size distribution for each soil sample was determined by wet sieving and hydrometer method. Sand, silt and clay contents together with soil texture were identified according to the United States Department of Agriculture system of soil classification. Undisturbed soil samples were used to measure the saturated hydraulic conductivity following the falling-head method (Lee et al. 1985). Soil water retention curve parameters were defined through evaporation method experiments (Wendroth et al. 1993) using the Hydraulic Property Analyzer device. Results were afterwards fitted to the Brooks & Corey (1964) parametric equation.

Table 1

Soil water retention curve parameters for Livraga and Secugnago sites

ParameterLivragaSecugnago
Saturated water content [m3/m30.389 0.379 
Residual water content [m3/m30.015 0.051 
Field capacity [m3/m30.33 0.301 
Wilting point [m3/m30.133 0.179 
Saturated conductivity [m/s] 2.36 × 10−7 6.79 × 10−6 
Brooks and Corey pore size index [−] 0.234 0.509 
% Sand 32.73 71.94 
% Silt 48.08 22.43 
% Clay 19.19 5.63 
Soil texture Loam Sandy loam 
ParameterLivragaSecugnago
Saturated water content [m3/m30.389 0.379 
Residual water content [m3/m30.015 0.051 
Field capacity [m3/m30.33 0.301 
Wilting point [m3/m30.133 0.179 
Saturated conductivity [m/s] 2.36 × 10−7 6.79 × 10−6 
Brooks and Corey pore size index [−] 0.234 0.509 
% Sand 32.73 71.94 
% Silt 48.08 22.43 
% Clay 19.19 5.63 
Soil texture Loam Sandy loam 

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