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The study was conducted on-station at Tanzania Coffee Research Institute to evaluate the effect of stem cuttings position along the mother plants on rooting of hybrid coffee varieties. Stem cuttings were assessed in a rooting medium of forest soil and sand at a ratio of 2:1 by volume under semi-controlled environment. A split plot experiment in a randomized complete block design with four replications was used. The main factor was five Arabica coffee varieties and the sub-factor consisted of four types of position of stem cuttings, namely base, middle, apex and control (mixture). Four months after planting, stem cuttings were evaluated for root growth characteristics. Data collected were subjected to analysis of variance (ANOVA) using CoStat software and treatment means were separated based on Tukey’s test at (P ≤ 0.05). Results obtained indicate that positions of stem cuttings along the mother plant had a significant effect (P = 0.04) on rooting of coffee varieties with stem cuttings taken from basal and middle positions having the highest rooting percentage with varieties N39-1 and KP423-2 having the highest rooting percentage. Further, interaction between varieties and position of stem cuttings significantly (P = 0.04) affected the rooting percentage and the number of lateral roots at (P = 0.01). The results from this study indicate that clonal multiplication of coffee stems cuttings is affected by varieties and position taken along the mother plant. Further studies are required to determine yield performance of the stem cuttings in relation to their positions along the mother plants.

Effects of cutting position along mother plants on rooting of hybrid coffee varieties