Vol. 10, Special Issue 12 (2021)

Author(s):
KD Mithapara and KM Karetha

Abstract:
An investigation was carried out at Hi-Tech Horticulture Park, Department of Horticulture, JAU, Junagadh during the year 2019-20. The treatments comprised of three level of season (S) viz., S₁ = February-March (Summer), S₂ = June-July (Kharif), S₃ = September-October (Winter) and three level of environmental conditions (C) viz., C₁ = Open field, C₂ = Net house, C₃ = Polyhouse. The experiment was laid out in Completely Randomized Design (CRD) with Factorial concept comprising nine treatment combinations with three replications. The result indicated among season February-March recorded highest scion length (8.04 cm) and (9.19 cm) at 90 and 120 DAG, respectively. September-October recorded maximum number of nodes per graft (8.50, 11.26, 12.29 and 14.43), highest graft girth (0.72 cm, 0.74 cm, 0.78 cm and 0.81 cm), highest rootstock length (19.19 cm, 19.58 cm, 20.09 cm and 20.55 cm) at 30, 60, 90 and 120 DAG, respectively and highest graft height (25.02 cm) and (26.08 cm) at 30 and 60 DAG, respectively. While maximum number of leaves per graft (8.57) and (11.43) at 30 and 60 DAG, respectively was noted in September-October whereas, (14.77) and (16.43) at 90 and 120 DAG, respectively was noted in February-March. The result indicated different environmental conditions polyhouse recorded maximum number of nodes per graft (5.87, 9.69, 11.03 and 13.58) and maximum number of leaves per graft (6.72, 12.59, 14.99 and 18.11) at 30, 60, 90 and 120 DAG, respectively whereas, highest graft girth (0.60 cm) and (0.65 cm) at 30 and 60 DAG, respectively and highest scion length (8.84 cm) at 120 DAG. The result indicated among interaction effect September-October + Open field recorded highest graft height (27.04 cm, 27.89 cm and 28.38 cm) at 30, 60 and 90 DAG, respectively and highest rootstock length (21.01 cm) and (21.26 cm) at 30 and 60 DAG, respectively. Maximum number of nodes per graft (8.80) at 30 DAG and was noted in September-October + Net house whereas, (13.13, 14.73, 18.33) at 60, 90 and 120 DAG, respectively was noted in June-July + Polyhouse. Maximum number of leaves per graft (8.90) at 30 DAG was noted in September-October + Net house while (14.00) at 60 DAG was noted in June-July + Polyhouse whereas, (16.30) and (19.90) at 90 and 120 DAG, respectively was noted in February-March + Polyhouse.