Vol. 3, Issue 2, Part A (2021)

The present investigation entitled “Effect of different growing media, Azotobacter and GA₃ on growth and survivability of transplanted air layers in Guava (Psidium guajava L.) C.V. Gwalior - 27” was conducted at Experimental block, College of Agriculture, R.V.S.K.V.V., and Gwalior (M.P.) during the year 2020-2021. The experiment was laid out in Completely Randomized Design (CRD) with three replications. Among different treatments Soil + Vermicompost (2:1) + GA₃ 200 ppm + Azotobacter (0.5 ml) resulted in maximum survival percentage of air layers at DAT 135 (87.33%) followed by the treatment with Soil + Leaf mould (2:1) + GA₃ 200 ppm + Azotobacter (0.5ml) (77.43%). This treatment also enhanced the growth as well as root parameters of air layers, No. of Sprouts at 15 DAT (8.67), No. of leaves (37.00), Stem length (28.33 cm), and Stem thickness (16.20 mm), Number of primary roots (10.00), Number of secondary roots (21.67), and Length of primary roots (11.97 cm), Length of secondary roots (8.73 cm), Diameter of primary roots (3.27mm), Diameter of secondary roots (2.00 mm), Fresh weight of primary roots (1.84 g), Fresh weight of secondary roots (0.79 g) at 135 DAT. It may be concluded that Soil +Vermicompost (2:1) + GA₃ 200 ppm + Azotobacter (0.5 ml) was found best for highest survivability percentage and enhanced root parameters followed by Soil + Leaf mould (2:1) + GA₃ 200 ppm + Azotobacter (0.5 ml).