For tomato wilt resulting from soil-borne pathogens, the chemical control is mainly according to standard methods of soil-borne pathogen control. Healthy tomato seeds were surface sterilized in 0.5% sodium hypochloride solution for 2 min, rinsed with sterile distilled water and then germinated on sterile moist gauze at 30°C in dark for 72 h. Then germinated seedlings were sown in a seedling tray in which the holes contained rockwool previously sterilized at 121°C for 20 min. The seedling tray was placed in nutrient solution sterilized by filtration with rockwool. After 20 days cultivation in a greenhouse, the seedlings as high as 10 cm with four to five leaves were transplanted into a bigger seedling tray in liquid medium with an unclear vessel.