This work was carried out during two successive seasons of 2019 and 2020 in the Experimental
lathe house of Horticulture Dept., Faculty of Agric., Benha university, Kalubia Governorate, Egypt to study the
effect of paclobutrazol (0.0, 50, 100 and 150 ppm), and chemical fertilization (0.0, 4, 6 and 8g/pot) treatments
on growth, fruiting and chemical composition of potted mango cv. Keitt. Uniform seedlings of mango were
planted on February 1st 2019 and 2020 in 40 cm plastic pots containing 1:1 mixture of peat moss and compost.
Obtained results showed that, the shortest plants were recorded by un-fertilized plants and sprayed with PP333
at 150 ppm in the two seasons. The highest value of plant width and show value were recorded by 150 ppm
PP333-sprayed plants enriched with NPK fertilization at 8 g/ plant in the two seasons. 150 ppm PP333-sprayed
plants supplemented with NPK fertilization at 8 g/ plant treatment scored the highest number of fruits / plant and
the heaviest mean fruit fresh weigh. The heaviest roots fresh and dry weights was scored by 150 ppm PP333
combined with NPK fertilization at 8 g/ plant treatment in the two seasons. The richest leaf N, P, K and total
carbohydrates % was scored by 150 ppm PP333 combined with NPK fertilization at 8 g/ plant in the two
seasons.