Abstract
This study aimed to investigate the impact of various fertilization methods and doses on the growth, flowering, and chemical composition of Iris tingitana cv. Wedgewood plants. The research aimed to address challenges hindering Iris plant development and bulb production, ultimately striving to cultivate high-quality plants suitable for Egyptian conditions. Conducted over two seasons (2021-2022 and 2022-2023) at the Horticulture Research Institute’s nursery of the Agriculture Research Center in Giza, Egypt, the experiment followed a factorial design with a randomized complete design (RCD) and three replicates. Results revealed that plants treated with 5 g/pot of phosphorein and 2 g/pot of kristalon, with irrigation intervals every 10 days after sowing (DAS), exhibited superior growth parameters. These included increased vegetative growth in terms of height, stem length, number of leaves per plant, fresh weight of cut spikes, diameter of the spike stem, and earliest flowering compared to other treatments across both seasons. Conversely, the application of 2 g/pot of kristalon and nitrobine, combined with irrigation intervals every 10 DAS, ranked second in enhancing plant growth and flowering characteristics in both seasons.
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