A field experiment aiming to study the effects of compound mineral fertilizer on the growth, yield and yield quality of cabbage plants was conducted during two successive seasons (1998/1999 and 1999/2000). The NPK fertilizer of 18:18:6 was applied to the cabbage plants at three rates (0, 150 and 300 gm per plant). The results showed that the application of NPK fertilizer at 300 gm per plant rate was in favor for producing the best weight per plant, number and leaf area of outer leaves, percentage dry / fresh matter, total yield, head circumference and head diameter. Stem length however was not affected significantly by the different NPK fertilization. Significant differences were also observed in the NPK contents in cabbage leaves and in the soil with an exception for the P %, which showed no significant differences between the fertilization treatments.