ABSTRACT The experiment is to study the influence of double plant spacing and topping on yield of soybean (Glycine max (L) Merril), Wilis variety. It has been conducted at Pusat Pengembangan Pertanian Unit Palawija (P3PAL/Center of Agricultural Development, Palawija Division) Soropadan, Pringsurat Sub District, Temanggung District), Central Java Province from September 1996 till January 1997…