Stimulatory Effect of Indole Butyric Acid (IBA) on Cuttings Rooting Response of Olive cv. Gemlik
Stimulatory Effect of Indole Butyric Acid (IBA) on Cuttings Rooting Response of Olive cv. Gemlik
Muhammad Rafique1, Inam Ul Haq1*, Humara Umar2, Muhammad Jan2 and Muhammad Azhar Iqbal2
ABSTRACT
In Pakistan, there is a growing interest in olive cultivation, especially in those regions where wild olive groves exist particularly in Punjab (Pothwar), Khyber Pakhtunkhwa and Balouchistan. Few areas of these regions are considered suitable for its commercial cultivation, where minimum temperature occurs between 10oC and 12oC during end March before olive flowering. In recent past, mass scale olive plantation over an area of 10,000 acres was done in these parts of the country. So, in order to ensure the sustainability of olive orchard development in Pakistan, a research trial was conducted to improve the rooting ability of olive cuttings to strengthen the local olive nursery setup. A practical problem is that the commercial production of potentially important olive cultivars is limited by poor rooting. Therefore, this research was designed to evaluate the stimulatory effect of indole butyric acid (IBA) treatment durations for 5, 10, 15, 20, 25 and 30 seconds by dip method on rooting ability of Gemlik cuttings. The data recorded showed that T6 (30 seconds) produced best results for rooting parameters including rooting percent (35.33%), average number of roots (8.36), average root length (9.40 cm) and survival rate of olive cuttings (39.00%). While poor rooting was observed under T1 (5 seconds) with respect to rooting ratio (19.66%), average number of roots (1.96), average root length (3.66 cm) and survival percentage of cuttings (15.66%). Resultantly, local nurserymen can produce more number of true to type olive plants for sustainability of olive sector in the country.
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