Effect of spraying GA, IAA and BA in growth Olive seedlings Olea europaea L. forcultivars Ashresi and Nabali After individualization

Abstract

This research was conducted in private orchard located at Husseiniya /Karbala province. For the period from mid- March 2016 until a mid –july2016.to study the effect of spraying growth regulators GA₃ ,IAA and BA with concentrations (50,100,100,mg.l^-1) sequentially in olive seedling for cultivars Ashresi and Nabali after individualization In addition to the Treatment of water- only comparison. Olive seedling were sprayed with growth regulator from 15/3/2015 to 15/7/2016 between spray and another 30 days using (RCBD) design with four replicates. Results showed that all spray treatment with growth regulator only or incombin led to a significant increase in vegetative growth characteristics the plant height , stem diameter, number of branches, length of the branch , leaf area and the percentage of dry matter. The interaction treatments is also excelled (GA₃+IAA) and treatment.(GA₃+BA)giving it the highest of the branch leaf area as it reached (27.37,81.56,11.51,8.22)respectively.