ABSTRACT The aim of this research was to study the effect of P fertilizer and zeolite dose and also their interaction on soybean yield (Glycine max (L) Merr.). This research was carried out in Kedungsari village, North Magelang, Central Java, from November 18 1992 until February 8th 1993. The altitude of the land was about 380 m above sea level. The type of the soi…