ABSTRACT A research about the effect of potato, tomato, and papaya extract on the growth of melon buds on in vitro propagation, has been carried out from 1 April 2001 until 25 September 2001. The experiment is located at Balai Benih Induk Hortikultura, Salaman, Magelang, Central Java, with an altitude of 296 meters, on a latosol soil, pH of 6, with an average of presipitation 2500-…