摘要:The most effective rooting hormone (IB A ) concentration was determined by studies on the clonal propagation o f olive semi-hardwood cuttings. A semi-hardwood cutting experiment was carried out on two different olive cultivars BARI zaitoon-1 and BAR I zaitoon-2 cuttings w ith 0, 2500, 3500 and 4500 ppm IB A solutions planted in the same rooting media (sand). Studies have shown that these two varieties have great potential for proliferation through semi-hardwood cuttings. The cuttings were grown under SPTs for 90 days to assess rooting ability and shooting capability. The sprouting percentage, number o f roots, root length, shoot length and survival percentage was the highest in cuttings treated w ith 3500 ppm IB A concentration, while cuttings without IB A treatment have the lowest results. Overall, 3500 ppm IB A treatment performed better than other treatments. The experimental results showed that semi-hardwood cuttings treated w ith auxin have potential for clonal propagation in simple and economical shaded polyethylene tunnels.