Evaluation of Simultaneous Application of Boric Acid, Hydrogen Proxide and Tiamine Accompanied with Indole-3-Butyric Acid on Rooting of Olive Cuttings cv. Rashid

The aim of this research was to evaluate the influence of rooting cofactors including hydrogen peroxide, boric acid and thiamine along with indole-3-butyric acid (IBA) on rooting of olive cuttings cv. Rashid in autumn 2007 and spring 2008. The study was carried out as a factorial experiment in a Completely Randomized Design (CRD) with three replications, and five cuttings in each replication. Results indicated that these cofactors individually or in combination with IBA could improve such rooting indices as rooting percentage, root number and length. Rooting of cuttings was promoted 6%, 16% and 20% with adding thiamine, boric acid and hydrogen peroxide, respectively. Adding one or two of these cofactors to IBA increased rooting of the cuttings, too. And they simultaneous with addition of IBA almost doubled the rooting of cuttings. Application of these cofactors increased rooting indices more in autumn than during spring.