Variability of Root System Size and Distribution among Coffea canephora Genotypes

This work aimed to evaluate the variability in distribution of root system among genotypes C. canephora cv. Conilon and indicate management strategies for a more efficient mineral fertilization. Root was evaluated six genotypes. The experimental design randomized blocks with three replications. Soil monoliths measuring about 27 cm3 were collected at different soil depths, row distances nine inter-row planting. collections carried out one plant each repetition. In total, 1296 samples evaluated. roots washed, digitized processed quantify length density, volume, surface area diameter. characterized using semivariograms. It observed that highest concentration occurred close irrigation drippers. There variation However, general, is concentrated depth 0 20 cm soil, up 50 planting 60 inter-rows. Therefore, greatest efficiency nutritional can be achieved by applying fertilizers within radius around plant.