Effect of acid or base treatment on rooting of Semi-hard Wood ‘Nabali‘ Olive cuttings
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Original research

Two experiments were carried out to study the effect of acid or base treatments along with number of retained leaves on rooting of cuttings of the Nabali olive cultivar. Semi-hard wood cuttings of Nabali olive cultivar were collected during December 1997, March 1998 and September 1998. At each collection date two experiments were performed. First: Effect of acid or base treatments. 1N and 2N sulfuric acid, 0.5, 1, and 2N sodium and potassium hydroxides were used for dipping olive cutting bases for different durations (5,10,15,20,30 or 60 sec) before treating them with ISA 4000 ppm for 5 sec. Results revealed that dipping olive cuttings with acid or base increased the rooting ability of semi-hard wood ""Nabali1 olive cuttings. IN NaOH treatment for 15 sec gave the highest rooting percentage (49%) in September 1998 experiment. No consistent effect for acid or base treatment was observed on callusing percentage, number of retained leaves per cutting and average length of roots per cutting, JWhile an increase on average number of roots per cutting was evident. IN NaOI I prelreatment for 20 sec gave the highest average number of roots per cutting in September 1998 (4.34), while the longest root per cutting was obtained when semi-hard wood Nabali' olive cuttines were treated with 1 or 2 N NaOH during March 1998 experiments. Second: Effect of number of retained leaves. Different numbers of leaves (2,3,4,5, and 6) were retained per cutting, treated with IN NaOH or IN KOH for 15 sec.…

University of Jordan. Amman - Jordan
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