. Saragih, Y. S., F. H. Silalahi, and A. E. Marpaung. 2006. Resistance test of some passionfruit cultivars to fusarium wilt. The aim of this experiment was to find out tolerant passion fruit cultivar to fusarium wilt. The experiment was conducted at Fruit Plantation Experiment Garden Berastagi, since January-December 2004. The experiment was set up in a randomized block design with 3 replications. The treatments were 2 factors (1) cultivars of passionfruit (grafting, Deli Serdang cultivar, Simalungun cultivar, cultivar from the forest), (2) Trichoderma koningii (without T. koningii/control and with T. koningii). The results indicated that cultivar from Deli Serdang was resistant to fusarium wilt disease with 0% of with intensity and percentage of disease incident. Trichoderma koningii was able to suppress fusarium wilt disease incident up to 15% and disease intensity up to 8.4% compare to control.