Abstract
This investigation was conducted during 2017 and 2018 seasons on twenty years old persimmon trees (Diospyros kaki L.) Costata cultivar budded on Tarabuls rootstock (Diospyros virgeniana) grown in loamy soil under flood irrigation system at El-kanater Horticultural Research Station, Egypt. The study aimed to enhance flowering, yield and fruit quality particularly fruit size using foliar applications with growth regulators substances namely, gibberellic acid, benzyladenine, and ascorbic acid. The obtained data showed that, all treatments had significant effects on all experimental parameters. The most effective treatment was benzyladenine foliar application with a concentration of 40 ppm that gained 31.66 and 35.27 kg fruit per tree compared to the control, which gained 13.65 and 13.32 kg fruit per tree in the first and second seasons, respectively.
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