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Two field trials were conducted during two successive seasons of 2018/2019 and 2019/2020 in the Floriculture Farm of Horticulture Department, Faculty of Agriculture, Benha University, Egypt to study the effects of spraying with some growth substances (kinetin, salicylic acid, calcium thiosulfate and potassium silicate) and chemical fertilization (N.P.K) as well as their combinations on flowering and some chemical constituents of Matthiola incana L. plants to enhance flowering quality for gardens bed ornamentation. The obtained results showed that spraying plants with 100 ppm kinetin in addition to NPK fertilization at the highest level (100 N: 200 P: 200 K kg/fed) resulted in the highest values in both seasons in case of fresh and dry weights of inflorescence and flowering portion, length and diameter of the flowering portion, number, diameter and fresh weight of florets, flowering duration, leaf total chlorophylls and total indoles content. This treatment, on the other hand, recorded the lowest values of leaves total phenols content. Conclusively, it is recommended to spray Matthiola incana L. plants with kinetin at 100 ppm supplemented with NPK chemical fertilization at 100 N: 200 P: 200 K kg/fed to obtain the best flowering quality for export

A pot experimental study was carried out at the Floriculture Nursery of the Horticulture Department, Faculty of Agriculture at Moshtohor, Benha University, Egypt during 2017 and 2018 seasons to study the effect of 16 treatments represented the combination between foliar spraying with four benzyladenine (BA) concentrations (0.0, 20, 40 and 60 ppm) and four chemical fertilization rates (0.0, 2, 4 and 6 g NPK/pot) on the growth, flowering and chemical composition of Arabian jasmine plant (Jasminum sambac Ait). The obtained results cleared that the tallest plants, the highest number of branches and leaves, the heaviest leaves fresh weight/plant, the highest number of flowers/plant, the heaviest flowers fresh weight/plant, the highest number and length of roots/plant, the heaviest fresh weight of roots/plant as well as the richest leaf total carbohydrates, nitrogen, phosphorus and potassium percentages were obtained by those treated with BA at 60 ppm + chemical fertilization at 6 g/pot in the two seasons. Conclusively, sprayingjasmine plants with BA at 60 ppm and supplying the plants with NPK mineral fertilizer at 6 g/pot, induced prospective effects on vegetative growth and flowering parameters with higher quality of this plant