Enraizamento de estacas de Khaya senegalensis A.Juss. em diferentes concentrações de ácido indolbutírico

This work aim was stablish the requirement as well the appropriated concentration of Indolbutiric Acid (IBA) in the Khaya senegalensis A.Juss. stem cuttings to produce new plants. The vegetal material consisted of 540 seed-origin young stem cuttings. The cuttings base were treated via 5% ethanol solution slow-immersion method during 12h with 0, 100, 200, and 400 mg L of IBA and via 50% ethanol solution fast-immersion method during 5 seconds with 0, 3000, 6000, 9000, and 1200 mg L of IBA. The experimental design used was the completely randomized with nine treatments, five replications and twelve cuttings per plot. The cuttings were in trays containing vermiculite per 45 days and then the cutting surviving percentage, cutting rooting percentage, adventitious roots number per cutting, and total adventitious roots length per cutting were evaluated. Later, the rooted cuttings were transferred to plastic pots containing 1500 cm of pine-based substrate, staying in it 120 days to evaluate the new plants surviving percentage, budding percentage, and budding height. The production of new plants of Khaya senegalensis can be obtained by cutting branches from seedlings, without IBA use.