Abstract
A pot experiment was conducted during the 2019-2020 season at the temporary place of the Faculty of Agriculture/ University of Kufa/ Najaf city/ Iraq to estimate the response growth and flowering of petunia hybrid to Spraying amino acids and iron. The amino acid concentrations were 0, 3, and 6 ml.l-1, and three iron concentrations were 0, 15, and 30 mg.l-1.It is clear that the interaction between amino acid {6 ml.l-1}and iron {15mg.l-1} produces an increase in vegetative and flowering characters, the number of leaves and branches, length of flowering branches, number of flowers, Flower diameter, The age of the flower in the plant & the flower content of carotene pigment increased remarkably, while amino acid {6 ml.l-1} and iron {30 mg.l-1} have significant effect on leaf chlorophyll content, and total soluble carbohydrates. Keywords: Petunia plant; amino acids; Iron; Auxins; growth; flowering.
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