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On-line version ISSN 1678-992X
ONO, E.O.; RODRIGUES, J.D. and PINHO, S.Z. do. Interactions between auxins and boric acid in the rooting of stem cuttings Coffea arabica L. cv. "Mundo Novo". Sci. agric. (Piracicaba, Braz.) [online]. 1992, vol.49, n.spe, pp. 23-27. ISSN 1678-992X. http://dx.doi.org/10.1590/S0103-90161992000400005.
The present research had as purpose to study auxin and boron effects on rooting of Coffea arábica L. cv. "Mundo Novo" stem cuttings. The cuttings were taken from orthotropous semi-hardwood branches of coffee-tree, which were treated during 24 hours with IBA or NAA and boron solutions, and the mixture of the three substances, resulting a total of 14 treatments. The following observations were realized, taking the cuttings 90 days after planting: number of rooted cuttings and "callus" formation per cutting. It can be concluded that to obtain a higher number of rooted cuttings, the treatment with NAA at 100 or 200 ppm plus boron is the most suitable.
Keywords : coffee; cuttings; rooting; boron; IBA; NAA.