ABSTRACT The researh aim is find out the effect of plant spa cing and several corn (Zea mays L) hybrida varieties to their yields. The researh had been conducted at Baledono Kedung pu tri, Purworejo, central of Java, from August 1992 until No- vember 1992, in the altitude 200 metres of the sea level. The researh was arranged in Randomized Completely Block…