The electrical conductivity of the soil saturation extract was correlated with the isolated factors doses of cassava wastewater and sampling times, and the data of this attribute fit an increasing linear trend as a function of both doses of cassava wastewater and sampling times (Figure 6(b)). When analyzing Figure 6(a), one can note that the soil CEes ranged from 1.05 to 1.61 dS m−1 for doses equal to 0 and 136 m3 ha−1 , respectively, representing a 53% increase.