Application of Electrical Resistivity Tomography for Detecting Root Biomass in Coffee Trees

Table 1

Soil properties from destructive samples.

	𝜌 (Ω·m)	RMD (Mg·m^−3)	𝜃 (m^3·m^−3)
Mean	509.70	0.0025	27.825
SD	152.44	0.00175	0.965
Minimum	267.59	0.000019	25.53
Maximum	952.39	0.009469	29.79

𝜌: electrical resistivity; RMD: root mass density; 𝜃: volumetric soil water content; SD: standard deviation.