ABSTRACT The Research was to aim is know the effect of potassium (ZK) done and plant distance to the yield of ginger (Zingiber officinale ROSC) gajah varity. The Research was carried out since Decunber 13th 1990 until April 2th 1991, it's located in rice field area at Candirejo, Tuntang, Semarang district, Central Java province. The soil type is Latosol, on altitude of 630 m above s…