Effect of different media and timing factor on rooting of olive (Olea europea) through air layering

Abstract

This study was undertaken to investigate the effect of different media and timing factor on rooting of olive (Olea europaea) plant through air layering at ARI, Tarnab Peshawar during 2011. Layering was done at different times i.e. 16^th June, 6^th July and 26^th July i.e. at intervals of 20 days. Different media i.e. sand, silt, F.Y.M and sawdust were used for layering. In the experiment, there were five air-layers in one treatment and 60 layers in one replication. The experiment was laid out in a randomized complete block design with split plot arrangement having three replications and four treatments in each plot. Timing factor was allotted to main plot while various media were kept in sub plots. According to the experimental results, maximum days to root appearance (30) and number of roots (7.8) were obtained in sand media, while maximum root diameter (0.16cm), root length (3.86cm) and maximum plant survival  (60%) were obtained in silt media. On the other hand, minimum number of days to root appearance (15), number of roots (2.4), root diameter (0.03cm), root length (1.37cm) and minimum plant survival (6.67%) were recorded in media of FYM. Similarly, maximum number of days to root appearance (37), root length (3.44cm), root diameter (0.13cm) were obtained in air layering made on 16 June, while maximum number of roots (7.3) and plant survival (46.67%) were noted in layers made on 6 July, while minimum number of days to root appearance (15), root diameter (0.11cm), root length (2.59cm) and plant survival (31.67%) were recorded in layers made on 26 July, while minimum number of roots (4.2) was noted in layer made on 16 June. Therefore, there was a distinct effect of the various media and layering timings on the rooting of olive plants.

Keywords: Air Layering; Effect; Media; Olive; Olea europea; Rooting; Timings

http://dx.doi.org/10.19045/bspab.2017.600121