Propagation of Salacca zalacca by Air Layering

In order to develop air layering technique of Salacca zalacca,three factors,namely rooting powder,media and amount of leaves left,were studied for their effects on the rooting performance of S.zalacca suckers air layered.The results showed that ABT#1 rooting powder concentrations from 500 to 1 000 mg/L had significantly positive effect on rooting,and the layers applied with ABT #1 rooting powder of different concentrations from 500 to 1 000 mg/L all rooted,the layers applied with ABT #1 rooting powder of 750 mg/L produced the most roots of 6.2.Cuttings had a higher rooting performance nursed in the mixed media of latosol with coir than in the media of latosol only.Four leaves should be left retained in air layering of S.zalacca.