The current investigation was carried out at Vegetables Research Station of Olericulture and Floriculture Dept., Faculty Agric., Mansoura Univ., Egypt, during the season of 2018 and 2019, to study the effect of irrigation water type (magnetized and non-magnetized water), four inorganic NPK fertilizer rates (50, 75, 100 and 125 kg/fed) and their interactions on growth and field performance of gladiolus plant spikes and corms (cv. Rose Supreme) cultured under the conditions of silty loam soil with developed furrow irrigation system. The experiment was laid out as strip-plot design with three replicates. The obtained data of this study obviously indicated that, all tested parameters such as vegetative growth characters (shoots and leaves number/plant, …), leaves chemical composition (N, P, K, …), flowering characteristics (spike number, length and fresh weight, …) and corm yield and its components (corm number, fresh weight and diameter, …) had significantly been influenced with irrigation water type, NPK fertilizer rates and their interaction. Regarding the effect of irrigation water type, the magnetized water gave the maximum values for most forecited parameters, except vegetative growth parameters, characters of spike number and fresh weight and corm diameter as compared with the non-magnetized one. Concerning the impact of NPK fertilizer rate, the rate of 125 kg fed^-1 recorded significant values for all mentioned parameters compared with 50 kg fed^-1 of fertilizer rate. Respecting the influence of interaction treatments, the combination treatment between magnetized water and NPK fertilizer rate at 125 kg fed^-1 had significant effects on all aforementioned studied parameters as compared with interaction treatment between non-magnetized water and 50 kg fed^-1 of fertilizer rate, therefore, it could be recommended that this interaction treatment is the best one for obtaining high characters of gladiolus growth and field performance of plants under similar research conditions.