ABSTRACT An experiment that examines abour the influence of duration of soaking of seed In Bome concetration of gibberellin to the growth of rubber seed (Hevea brasil1- ensin MA), has been done in Potrobangsan village, North Magelang sub district Magelang, on the altitude 376 metres and regosol soil tipe, pH to 7. The design of the experiment based on factorial ex- periment WAB a…