Assessing the Growth Response of Gimakalmi (Ipomoea Aquatica) under Alternative Wetting and Drying (AWD) System as Influenced by Plant Growth Regulator (PGRs) Application in the Rooftop Garden
Khadezatul Kubra, Md. Rofekuggaman, Md. Habibullah Siddiki, Rebeka Sultana, Jakaria Chowdhury Onik, Md. Abubakar Siddik
Plant Science Archives
Urban Farm DB summary
A study at the rooftop garden of Habiganj Agricultural University, Bangladesh, examined the effect of combining alternate wetting and drying (AWD) irrigation with plant growth regulators (PGR, specifically gibberellin) on the growth of Gimakalmi (Ipomoea aquatica) during the Boro season (January-June 2024), in silt loam soil (pH 6.14, 2.25% organic matter, 0.12% total nitrogen). A randomized complete block design with four treatments and three replications compared a control (T0), 100% recommended fertilizer dose plus PGR (T1), PGR plus AWD (T2), and 100% recommended fertilizer dose plus PGR plus AWD (T3). At 21 days after sowing, leaf number was 3.83 in the control versus 7.50 in T3, and yield at the first harvest (21 days after sowing) was 5.68 t/ha in the control versus 11.51 t/ha in T3, with T3 consistently showing the highest leaf number, plant height and yield across all three harvests.