An adequate water supply is essential for seedlings transferred from the nurseries to the field, in order to give some time to for the root system to grow, increasing the capture area of water and nutrients. Most of the coffee plants’ roots are placed in the first 50 to 60 cm above ground. Low temperatures in the soil affect root absorption more than do high temperatures (Franco 1970; Alonso et al.1997). However, excluding the superior upper portion of the soil (top 5 cm), the inferior layers are less affected by oscillations in air temperature. A good indication of this fact is that the growth rate of coffee roots is higher in cold seasons with a decreased growth of the canopy