This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Coffee roots support the plant and absorb the water and nutrients necessary for growth and production. In order to evaluate coffee roots biomass in different types of renewal, root samples were taken every three months for a year in 30 randomly selected trees for each evaluation. Soil and root samples were extracted at a distance of 25 and 50 cm horizontal from the base of the stem in the first 20 cm from the surface. Roots with a ? 3 mm diameter were selected and classified as alive or dead. For conventional stumping, "lung" pruning and "skull" pruning, significant differences in the amount of live root biomass at 25 cm and 50 cm were found when comparing the averages of the initial date and those obtained after the renovation. There were similar results in the composition analysis of total roots (live and dead). The greater removal of aerial tissue in the renewed plants caused a decrease in root biomass in the first year; however, the development of new roots was observed as the plants increased in age and up to 74% of the initial biomass in conventional two-year old stumped trees was recovered. Likewise, coffee production in a 5-year period showed a cumulative value of 50.865 kg of coffee fruits for the conventional stump, higher than that recorded with other renewal types.