statistically different from all other treatments. Fruit size significantly differed among the treatments. The longest fruit was observed in treatment N120 P40 K80 S30 followed by that from N120 P40 K80 S20 in both the years and these were significantly different from all other treatments. The shortest fruit was obtained in control plot. The maximum diameter was found in the treatment N120 P40 K80 S30 and it was statistically similar with the treatments N120 P40 K80 S20, N120 P60 K80 S20 and N120 P40 K40 S20 in 2010. During 2011, treatments N120P40K80S30 and N120 P40 K80 S20 gave statistically similar fruit diameter, which was significantly different from rest of the treatments. The minimum diameter of bitter gourd was recorded in control treatment. Application of chemical fertilizer also increased the single fruit weight, which was the highest with N120 P40 K80 S30 treatment and it was statistically identical with treatment N120 P40 K80 S40. These two treatments were significantly different from all other treatments in both the years. The lowest fruit weight was noted in control plot.