ABSTRACT This experiment had been concluctecd from April 19 to July 1993, at Kedungsari, Magelang Utara, Magelang, Central Java, The soil type is latosol and the altitude is 38 meters. This experiment has an effort to know the effect Paclobutrazol an concentration optimum to yield of several variety soybean (Glycine max ( L) Merril). The method of experiment used was Split Plot Design wi…