https://doi.org/10.37229/fsa.fjh.2024.03.23

This study was conducted as a pot experiment at the nursery of the Ornamental Plants and Landscape Gardening Research Department, Horticulture Research Institute (HRI), Agricultural Research Center (ARC), Giza, Egypt, during two successive seasons (2022 and 2023)."The study aimed to investigate the effects of different concentrations of 'Milagrow' (a commercial formulation containing Brassinosteroids (BRs), Phosphorus, Potassium, and Boron) and various bulb storage periods at 5°C before planting on the flowering and bulb production of Hymenocallis speciosa plants." The experiment included two factors. The first factor was the duration of the bulb storage period before planting (0, 25, 35, and 45 days). The second factor was the concentration of the plant stimulant (Milagrow) consisting of [Brassinosteroid (BRs), Phosphorus, Potassium, and Boron] as a soaking solution before planting at 0, 50, 100, and 150 ml/l. The treatments laid out in a factorial experiment using a complete randomized design (CRD). The results revealed that cold storage of Hymenocallis bulbs for 35 days at 5^oc before planting, combined with dipping the bulbs in 100 ml/l of the plant stimulant (Milagrow) containing [BRs, Phosphorus, Potassium, and Boron] resulted in significant improvements in vegetative growth, flowering, bulb production, and the chemical contents of Hymenocallis bulbs.