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.

Response of Lychee (Litchi Chinensis) to layering media and timing factors under the climatic conditions of Haripur

“…The results are in line with [10]. The results are in argument with [7] they reported the maximum number of roots was obtained in silt media air layering made on July 18. While minimum number of root per air layering was noted in Saw dust Media.…”

“…The effect of different medias and air layering timing factors showed that maximum number of days to root appearance (75.33) was reported in layer made on 20 July in Silt media followed significantly layer made on 20 July in Garden soil media which take (68.67) days to root appearance, whereas minimum days to root appearance (40.33) was reported in layer made on 10 June in Sawdust media followed by layer made on 10 June in FYM media which take (43.67) days to root appearance. The results are in line with [7] they reported the maximum days to roots appearance were obtained in silt media and minimum days to roots appearance were obtained in saw dust media. And maximum days to roots appearance were obtained in air layering made on 18 July.…”

“…The results are in line with (Hossain et al, 2007) they concluded that success ratio of Lychee layer is more in month of July then other [9]. The results are in argument with [7]. They reported that maximum root length was obtained in Silt Media while minimum root length was obtained in Saw dust Media.…”

“…The maximum root diameter in Silt media on 20 July is may be due to high relative humidity from July 10 to up to September that might have compact transpiration which increased cell turgidity and improve cell division thus the better portion of available photosynthesis used in root development resulted in higher in root diameter. The results are in agreement with [7] they reported that air layering in Lychee is most successful during the month of July. They also confirmed that silt media is best for air layering in Lychee [7].…”

“…The minimum root length in air layering made on 10 June in Saw Dust media could be due to high temperature in the month of June. In month of July temperature dropped the root length were increased it may be due to decrease in temperature because of less utilization of carbohydrate in respiration and extra energy would have been diverted to root development [7].…”