Influence of deficit irrigation regimes on the growth dynamics of the indigenous Jamun

Implementing water-saving strategies in agriculture is increasingly essential due to the world's water shortage. A research trial based on a pot experiment was conducted in a greenhouse to investigate the effects of four varying irrigation levels (100% field capacity (F.C.), 75% F.C., 50% F.C. and 25% F.C.) on the morphological, physiological, biochemical and antioxidative enzymes activity traits of jamun plants (Syzygium cumini cv. Desi). Plants treated with moderate level (50% F.Cs. increased plant height (58%), stem diameter (59%), intermodal distance (61%), number of leaves (68%), leaf length (83%), width (68%) and leaf area (65%) compared to control. In terms of phytochemical traits, plants subjected to 25% F.C. exhibited a higher phenolic content compared to the control. In comparison, chlorophyll content was highest at 50% full concentration (F.C.). Physiological traits indicated that control plants had the lowest stomatal conductance, transpiration rate, and water-use efficiency. Antioxidant enzymes, such as superoxide dismutase, peroxidase, and catalase, were at their maximum in plants treated with 25% F.C. Further insights are required regarding their comparative behaviour under field conditions.