Abstract: A field trial on the effect of GA3 and NAA was
conducted on tomato cv. Kashi Vishesh during the rabi
season of 2011-12. The different concentration of GA3 (20,
40, 60 and 80 ppm) and NAA (25, 50, 75 and 100 ppm) were
sprayed on the crop to study the growth behavior and yield
and yield attributes of tomato. It was found that there was a
linear increase in growth parameters like plant height and
number of branches per plant with increasing level of GA3
and NAA. The maximum plant height was recorded as 85.3
cm and 82.3 cm with the application of GA3 @ 80ppm and
NAA @ 100ppm, respectively after 60 days of transplanting.
Similarly, the yield and yield attributes were also affected
significantly with increasing concentrations of GA3 and
NAA. A maximum yield of 483.6q/ha and 472.2 q/ha was
obtained with the use of GA3 @ 80ppm and NAA @100ppm,
respectively.