Influence of different cutting positions and rooting hormones on root initiation and root-soil matrix of two tree species
2013
Saifuddin, M. (University of Malaya, Kuala Lumpur (Malaysia). Inst. of Biological Sciences) | Osman, N. (University of Malaya, Kuala Lumpur (Malaysia). Inst. of Biological Sciences) | Rahman, M.M. (University of Malaya, Kuala Lumpur (Malaysia). Inst. of Biological Sciences)
The soil bioengineering technique, vegetation through stem cutting, is highly effective for soil reinforcement as well as in controlling surface erosion. But the success of this technique depends on the suitable plant species, their stem cutting position and their rooting ability. This study aimed at investigating the effects of different cutting positions and hormones on the formation of rooting of stem cuttings and root-soil matrix. According to the observations, Leucaena leucocephala was not suitable for propagation through stem cuttings. Even stem cuttings were treated by rooting hormones. In case of Peltophorum pterocarpum stem cuttings, a higher survival rate with higher stem number, leaf area index (LAI) and root initiation were observed in basal position cuttings than apical position. The soil moisture content was negatively correlated with root biomass and matric suction. Moreover, higher root length, volume and biomass were found in IBA treated stems than NAA and control, which presumably reduce more soil moisture content and increase matric suction. It can be concluded that stem cuttings should be taken from basal cutting position and IBA hormone should be applied to induce adventitious roots of P. pterocarpum. This technique will be suitable for practical application on soil bioengineering sites to improve root-soil matrix and reinforce soil.
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