Two field trials were conducted during two successive
seasons of 2018/2019 and 2019/2020 in Floriculture farm of
Horticulture Department, Faculty of Agriculture, Benha University to
study the effects of spraying some growth substances of kinetin,
Salicylic acid, Calcium Thiosulfate and potassium Silicate and
chemical fertilization (N.P.K) as well as their combinations on
flowering growth and chemical composition of Matthiola incana
plants to increase and improve the flowering quality of this plant to
bed gardens ornamentation. Obtained results showed that the
heaviest fresh and dry weights of inflorescence and flowering portion
were recorded by 100 ppm kinetin-sprayed plants fertilized with
NPK fertilization at the high level in both seasons. The tallest and the
thickest flowering portion were recorded by 100 ppm kinetin-sprayed
plants joined with NPK fertilization at the high level in the two
seasons. The highest values of the number, diameter and fresh weight
of floret were scored by 100 ppm kinetin-sprayed plants
supplemented with NPK fertilization at the high level in both
seasons. The combined treatment between kinetin at 100 ppm and
chemical fertilization at the high level gave the highest flowering
duration. The highest leaf total chlorophylls and total indoles
contents were recorded by 100 ppm kinetin- sprayed plants
supplemented with chemical fertilization at the high level in the two
seasons. Conclusively, spraying Matthiola incann plants with kinetin
at 100 ppm and fertilized them with chemical fertilizer at 100N:
200P; 200K kg/fed. produced the best flowering growth and quality of this plant