Vol. 12, Issue 5 (2023)

Author(s):
Muskan Jangid and Saket Mishra

Abstract:
The present investigation was conducted at the Research farm of Department of Horticulture, SHUATS, Prayagraj, on 40-month-old plant during January 2022 to July 2022 with the objective to find out suitable treatment of GA3 and NAA in relation to plant growth, yield and quality of apple. The statistical design adopted for the experiment was randomized block design (RBD) with three replications and nine treatment combinations. viz, T0 (Control), T1 (GA3 50 ppm), T2 (GA3 100 ppm), T3 (GA3 150 ppm), T4 (GA3 200 ppm), T5 (NAA 10 ppm), T6 (NAA 15 ppm), T7 (NAA 20 ppm), T8 (NAA 25 ppm). The treatments were applied by soil drenching at initiation of experiment, pre-flowering stage and the last one at the fruit setting stage to assess the effect on growth, yield and quality of apple. The results of present investigation revealed that, the treatment T4 (GA3 200 ppm) outstand in all the aspects like maximum plant height (2.96 m), maximum number of Primary and Secondary branches (3.66), (31.33) respectively followed by T3 (GA3 150 ppm). The treatment T5 (NAA 10 ppm) maximum number of flower (258), maximum no. of fruit (36.33), maximum fruit yield/plant (7.6 kg) and quality parameters like maximum TSS (19.7 ºBrix) and maximum acidity (0.98%) followed by T7 (NAA 20 ppm). The lowest observation was recorded in T0 (Control). Treatment with GA3 and NAA improved vegetative growth, yield and quality to a lesser extent as compared to the control.