Effect of naa on the yield and quality of summer tomato

Abstract

An experiment was conduced at the Regional Agricultural Research Station, Ishurdi, Pabna during the period from February, 1992 to July, 1992 to study the effect of different doses of NAA (0, 25, 50, 75 and 100 ppm) on two tomato lines (TM0111 and TM0367). Different concentrations of NAA, when sprayed on flower cluster, had significant influence on fruit bearing, individual fruit weight, size and yield per plant and per hectare. The highest yield (11.21 t/ha) obtained from the plants when sprayed with 25 ppm NAA regardless of lines. The yield reduced gradually with the increase in the concentration of NAA from 50 to 100 ppm. Vitamin C content was the highest (14.87 mg/100 g) in the fruits when sprayed with 100 ppm. Vitamin C content was the highest (14.87 mg/100 g) in the fruits when sprayed with 100 ppm NAA regardless of lines. The tomato line TM0111 had maximum TSS at 25 ppm NAA (4.8%). However, vitamin C increased with the higher doses of NAA (50 to 100 ppm) but TSS(%) had the reverse trend.