Effects of Different Doses of IBA (Indole-3-Butyric Acid) and Rooting Media on Rooting of Some Medicinal Plants

Abstract

This study was carried out to determine the effects of different rooting media (peat, perlite, peat-perlite (1: 1), and cocopeat) and IBA doses (control, 1000, 2000, 3000, 4000, 5000 ppm) on rooting of damask rose (Rosa damascena Mill.), Thunberg barberry (Berberis thunbergii DC), rosemary (Rosmarinus officinalis L.) and lavender (Lavandula angustifolia Mill.) cuttings. The cuttings were exposed to different indole-3-butyric acid (IBA) solutions in the greenhouse and planted in four different medium. Rooting percentage, root lengths, and the number of the roots were determined for the cuttings which were left to rooting for approximately 80 days. As a result of the study, the effect of rooting medium and different doses of IBA on rooting in damask rose, thunberg barberry, rosemary, and lavender cuttings were found to be statistically significant. The highest rooting percentages for the damask rose, thunberg barberry, rosemary, and lavender were found to be 95.00%, 81.67%, 88.33%, and 82.50%; number of roots were 19.28, 13.44, 26.12 and 17.38 per plant; and root lengths were 18.89, 14.32, 25.58 and 17.26 cm, respectively, in perlite rooting medium and 4000-5000 ppm IBA solution. The best results for rooting medium were obtained from perlite and the best results for the IBA dose were obtained from 4000 ppm application that promotes adventitious rooting.

Keywords

• indole-3-butyric acid
• peat-perlite
• rooting percentage
• number of roots
• root length